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Google Earth's New Satellites

Rambo Tribble writes "The BBC provides some insights into the next generation satellites being built for Google by contractor DigitalGlobe in Colorado. The resolution of these satellites' cameras is sufficient to resolve objects that are only 25cm wide. Unfortunately, the public will be allowed only half that image quality, the best being reserved for the U.S. military. 'The light comes in through a barrel structure, pointed at the Earth, and is bounced around by a series of mirrors, before being focused onto a CCD sensor. The big difference – apart from the size – between this and a typical handheld digital camera, is that the spacecraft will not just take snapshots but continuous images along thin strips of land or sea.'"

73 of 118 comments (clear)

  1. Deliberately crippled by Anonymous Coward · · Score: 1, Informative

    ITAR applying to satellites and space probes is a right pain in the ass for anyone actually trying to get useful work done with international assistance.

    1. Re:Deliberately crippled by icebike · · Score: 4, Interesting

      But it probably gets Google the sats it needs for free.

      If google can build it, but only the military can use the full resolution, it sounds like google is probably getting huge piles of money from the US Military.

      --
      Sig Battery depleted. Reverting to safe mode.
    2. Re:Deliberately crippled by thomst · · Score: 5, Informative

      icebike conjectured:

      But it probably gets Google the sats it needs for free.

      If google can build it, but only the military can use the full resolution, it sounds like google is probably getting huge piles of money from the US Military.

      The summary is completely wrong (surprise!)

      Google is NOT building the satellite (note the singular) in question. It will merely be a customer of DigitalGlobe - one of many, including the US government.

      Not that the US goverment needs DigitalGlobe's images. After all, the NSA has a fleet of its own satellites with far better image resolution capability than the DigitalGlobe effort.

      Slushdot: come for the misleading summaries, stay for the uninformed commentary!

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    3. Re:Deliberately crippled by Anonymous Coward · · Score: 1

      If you're going to correct someone at least do it right. NRO designs and operates US spy satellites, NGA uses the collected data.

    4. Re:Deliberately crippled by The+Snowman · · Score: 1

      After all, the NSA has a fleet of its own satellites with far better image resolution capability than the DigitalGlobe effort.

      Actually, that would be the National Reconnaissance Office (NRO).

      --
      24 beers in a case, 24 hours in a day. Coincidence? I think not!
    5. Re:Deliberately crippled by Lawrence_Bird · · Score: 1

      ha.. and both corrections by Anonymous Cowards. What do you guys have to hide? Hmm?

    6. Re:Deliberately crippled by sootman · · Score: 1

      > Slushdot: come for the misleading summaries,
      > stay for the uninformed commentary!

      Yup. Only the power of The Beta can drive us away. :-)

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    7. Re:Deliberately crippled by Dr+La · · Score: 1

      It will merely be a customer of DigitalGlobe - one of many, including the US government.

      Not that the US goverment needs DigitalGlobe's images. After all, the NSA has a fleet of its own satellites with far better image resolution capability than the DigitalGlobe effort.

      In fact, the US Government relies heavily on DigitalGlobe imagery. After the optical component of the Future Imagery Architecture (FIA) program that should have replaced the aging KH-11 Keyhole/CRYSTAL satelites was scrapped, it left the NRO (the NSA has nothing to do with optical reconaissance) with limited high-res imaging capabilities. For a while they had only 3 operational KH-11 optical reconnaissance satellites left in orbit: two new recent launches have expanded this to 5 recently but one of these is over 17 years old and will likely soon be deorbitted, bringing it down to 4: hardly a "fleet". Lawmakers have been holding off NRO requests for more optical satellites with the argument that it is better to buy time on DigitalGlobe satellites.

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    8. Re:Deliberately crippled by Anonymous Coward · · Score: 3, Interesting

      When I was a contractor at DigitalGlobe, it was explained to me in this way:

      DigitalGlobe was one of the first, if not the first, companies to have a randomly taskable panchromatic satellite. Previously, only state agencies could afford such things.

      To prevent too much sensitive information reaching parties that the US Government preferred to not have access, an arrangement was made to allow the government first priority for exclusive data rights. They would buy up all the images that they wished to remain private, at a preferred rate. The private company didn't have to hassle with the government, could be a partner, and the spies got oversight and a measure of control in the process.

      We aren't Syria or Venezuela, our government doesn't nationalize companies. So, a compromise needed to be made, once private entities could operate technology that previously it took a wealthy nation to accomplish.

  2. Continuous Image by bondsbw · · Score: 4, Interesting

    What, pray tell, is a "continuous image" and how is it not a series of snapshots?

    Is this like a video (which is seemingly continuous over time, made by sequencing snapshots) or like a panoramic image (which is continuous over space, made by processing/overlaying snapshots)?

    --
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    1. Re:Continuous Image by Anonymous Coward · · Score: 1

      It's continuous like two halves of a piece of string.

    2. Re:Continuous Image by Vulch · · Score: 5, Insightful

      Usually means the sensor is just a single strip rather than a 2D array. The sensor is aligned across the path of the satellite and the motion along that path provides the other dimension.

    3. Re:Continuous Image by icebike · · Score: 1

      What, pray tell, is a "continuous image" and how is it not a series of snapshots?

      Is this like a video (which is seemingly continuous over time, made by sequencing snapshots) or like a panoramic image (which is continuous over space, made by processing/overlaying snapshots)?

      Think slit cameras.
      You only need to capture a small slit-width at any given time, and paste them side by side in an endless stream of slit widths. You build images one slice at a time.

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    4. Re:Continuous Image by Anonymous Coward · · Score: 1

      Think slit cameras.

      Think /r/gonewild.

    5. Re:Continuous Image by LoRdTAW · · Score: 4, Informative

      Or better yet: a flatbed scanner.
      In a scanner you have a 1 dimensional array of sensors defining a pixel width. You then move the sensor along an axis repeatedly recording that data at regular intervals (distance or time). That motion gomes from a little rubber timing belt around two pulleys, one of which is a step motor, which drags the 1D sensor across the photo or page being scanned. The result is now a 2d array of pixels that is, drum roll please: a picture we can see. If you ever used a scanner you would notice that high resolution scans take much longer. This is because the sensor has to be moved more slowly in order to allow the scanner to properly process the large amount of data from the sensor and send it to the computer without needing large amounts of memory in the scanner. Lets do some math: a hypothetical scanner has a sensor with 300 pixels per inch, 8.5 inches wide (for letter sized paper) and capturing 24 bits of RGB color. You now have (300*8.5*24)/8 = 7650 bytes per sample. And if you sample at 300 evenly spaced points in one inch and you page length is 11 inches (again letter size) then you have 7650*300*11 = 25245000 or 25.25 megs of data for a 300x300 DPI 24 bit color scan.

      The same technology is used in slit cameras for industrial automation systems on conveyor lines or other areas of machine vision. The conveyor or linear movement is like the little belt in the flatbed scanner moving the object past the 1D sensor array. The cameras used are slit cameras that contain a 1D pixel array and using an encoder on the conveyor or timing, a computer can determine the speed at which to sample the array and write that line of data to a 2D array and voila, a picture appears. You can treat the image as a stream of pixel lines and write them to a file akin to a scrolling image. The interesting part is the images from that stream isn't a single instant in time (or freeze frame) like a photo from a 2D sensor but a picture of time elapsed from row to row of pixels. Its a picture of elapsed time. Or like an oscilloscope. But you have a 2D array of pixels vs time instead of signal amplitude vs time.

      But why a 1D array when we have 2D arrays in cameras already? The answer is twofold:
      -you can more effectively make a wider pixel array consisting of millions of pixels and remove the need to take a large, data intensive frame. You simply stream the 1D array and buffer it. You somewhat simplify the imaging process as you simply stream the sensor data to disk(or wherever) instead of freeze, write buffer to disk and then get ready to snap again.
      -pixels next to each other on a 2D sensor experience noise from each other. Ever zoom in on a picture taken with a cheap, high megapixel camera? Its looks like grey, fuzzy/blurry snow. That is the noise. So a 1D array has less noise as its a single row of pixels.

      The Google satellite is using the same technology and the benefits are enormous.

      And one more tidbit: those persistence of vision displays that uses a 1D array of spinning LED's to create images or text works the opposite of a slit camera. Instead of reading a sensor array, it writes to an array of LED's at regular intervals (say every degree of rotation at a constant speed) to produce an image. It does this so fast your eyes don't notice the array LEDs switching on and off.

    6. Re:Continuous Image by DarwinSurvivor · · Score: 5, Funny

      Ah, so it's a series of 1 dimensional snapshots!

    7. Re:Continuous Image by kimvette · · Score: 1

      It probably is a single strip of sensors almost exactly like a scanner.

      --
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    8. Re:Continuous Image by greenfruitsalad · · Score: 1

      they should call it an earth scanner. i wonder if it does OCR.

  3. google satellites? by schneidafunk · · Score: 1

    I thought the original satellites were not owned by google but the images were leased. Do these satellites actually belong to google?

    --
    Some people die at 25 and aren't buried until 75. -Benjamin Franklin
    1. Re:google satellites? by schneidafunk · · Score: 4, Informative

      After RTFA, it is clearly not owned by Google but by DigitalGlobe. Check out this tidbit: "The satellite will be able to point to particular areas of interest and is capable of seeing objects just 25cm (10 inches) across. However, DigitalGlobe can only sell these highest-resolution images to customers in the US government. "

      --
      Some people die at 25 and aren't buried until 75. -Benjamin Franklin
    2. Re:google satellites? by alen · · Score: 1

      RTFA
      says digiglobe will own the satellites and google might buy the data

    3. Re:google satellites? by RocketSW · · Score: 4, Informative

      Digital Globe is not in the business of building satellites. Ball Aerospace is building the satellite for Digital Globe who will operate it. Digital Globe then sells/leases the imagery to Google.

  4. Technology Never Seen by houseparty2 · · Score: 1

    The technologies that exist to create such high tech maps are incredible. I find it sad the the average human will mostly never see the extent of this technology. There are many technologies that already exist that we will never see or hear about. It is to bad that we can't even experience a high quality images of the world we live in. I would find it incredible interesting to view.

    1. Re:Technology Never Seen by gnick · · Score: 4, Insightful

      It is to bad that we can't even experience a high quality images of the world we live in.

      Actually, I was just outside (a scary thought I know) and was able to discern things much smaller than 25 cm. The world is incredible to view - The best way is to decide what you want to see most, then find a way to go take it in with incredible resolution. Not much tech involved than what most of us were born with.

      --
      He's getting rather old, but he's a good mouse.
    2. Re:Technology Never Seen by houseparty2 · · Score: 1

      This is true, we can see and enjoy our immediate surroundings. But I love to look at places on Google Earth that I may never be able to visit, I think it would be amazing to view these places through the high tech lenses that actually exist!

    3. Re:Technology Never Seen by Kjella · · Score: 1

      Well at best even with near infinite resolution you'd see them like an eagle flying over them, which would be odd in most cases. I think 99% of the time I'd prefer to use Google Streetview or a photoblog of some form to get a human perspective on things. Not to mention they could take pictures inside buildings, under thick foliage, underwater and other places an overhead camera could never reach. Not that a photoblog is anything close to actually visiting, but aerial photos isn't even close to that.

      --
      Live today, because you never know what tomorrow brings
    4. Re:Technology Never Seen by nurb432 · · Score: 1

      True, but now try that in the back woods of China, or Antarctica.. you cant go everywhere in person.

      --
      ---- Booth was a patriot ----
  5. ONLY 2" resolution instead of 1"?? by Nutria · · Score: 1

    I'm not exactly crying a river of despondent tears.

    --
    "I don't know, therefore Aliens" Wafflebox1
    1. Re:ONLY 2" resolution instead of 1"?? by AvitarX · · Score: 1

      foot (well 20" and 10").

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    2. Re:ONLY 2" resolution instead of 1"?? by magarity · · Score: 1

      You misconverted centimeters?

    3. Re:ONLY 2" resolution instead of 1"?? by Nutria · · Score: 1

      Oh, right; cm not mm. :(

      I'm still not crying a river...

      --
      "I don't know, therefore Aliens" Wafflebox1
    4. Re:ONLY 2" resolution instead of 1"?? by cheater512 · · Score: 1

      I am. Over the American education system though, not the images.

      Metric really isn't that hard.

    5. Re:ONLY 2" resolution instead of 1"?? by Nutria · · Score: 2

      Metric isn't hard. Remembering little-used conversion values is.

      Cry instead for the 48% who think that Astrology isn't utter bunk.

      --
      "I don't know, therefore Aliens" Wafflebox1
    6. Re:ONLY 2" resolution instead of 1"?? by SenseiLeNoir · · Score: 1

      Feel sorry for us Brits who have to deal with both, in a confusing mishmatch :)

      Metric for most things, with some bizarre use of imperial for inertia reasons.

      road/railway speeds - imperial(mph), scientific speeds, and any other speed, metric.

      road distances (signs usually are in miles/yards or fractions), however, the distance markers on the side of the motorways used by workers, etc are in KM.

      Car economy is in mpg (though our gallon is slightly bigger than the US gallon), but we buy our fuel in litres, and
      pay for it in litres. Possibly a good thing considering the price.

      Most items are bought in a supermarket are given metric mesurements for weight and volume, eg litres for drinks, grams/kg for food weights, yet MILK is still sold in pints.

      Beer is still sold in pints in a pub....

      --
      Have a nice day!
  6. If Google's flying satellites, by John.Banister · · Score: 1

    I wish they'd do a modern (eg LTE) version of what Teledesic claimed to intend. Global access to data communication with a direct link to Google's cloud services could be beneficial to huge numbers of people on the planet, and would also give Google the sort of infrastructure level access to data that they have seemed to enjoy having in the past.

    1. Re:If Google's flying satellites, by viperidaenz · · Score: 1

      So you wish they'd spend billions of dollars for no gain?
      Global broadband from satellites isn't very good. You've got 300ms of latency simply due to the speed of light and the fact the satellites are 42,000km away.
      It's also very hard for a satellite to pick up any transmission originating from a large area. Before DSL became popular, satellite broadband was a downlink only, with the uplink provided by a dial-up connection.

      If you want a satellite to reach a large number of users, it's a one-way system.

    2. Re: If Google's flying satellites, by Simon+Brooke · · Score: 1

      When I use the internet from home, my little dish lights up the satellite so effectively that not only can the satellite distinguish it from all the other radio frequency clutter emanating from northern Europe, I can push 6Mb/s up the link. Yes, I know you city folk think that's absurdly slow, but I find it mind boggling. What's even more mind-boggling is that it only eats 38 watts to do that. Of course if everyone was trying to light up the satellite at the same time it almost certainly wouldn't be able to discriminate all the different signals, but even so comms satellites are awesome technology.

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    3. Re: If Google's flying satellites, by viperidaenz · · Score: 1

      How fast is the link when there is a lot of cloud cover or more than a handful of concurrent users?
      cdma and other similar technology allows the receiver to pick out a signal below the noise floor. Its pretty fancy stuff, but you'd either need dozens of satellites spaced far apart or very large amounts of spectrum just to provide decent bandwidth to a single city.
      That's why cell phones are more popular than sat phones and why cell networks are comprised of many small towers over a large area instead of how TV and radio stations work with one big antenna to cover a large area.

    4. Re: If Google's flying satellites, by webmistressrachel · · Score: 1

      Wow, that's a fast downlink, never mind uplink.

      I'm a bandwidth-starved Brit from the Northwest backwaters, one of the first to get fibre (spelt correctly) in Leyland, Lancashire - and then use it to spread anarchy in the form of recycled computers with pirated windows and learning software (and yes, games) through that hell-hole, enlightening many a disillusioned soul suffering from the negative effects of the DAF fallout...

      So how exactly are you doing that, Sir? And can I come play with it, please? Rachel

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    5. Re:If Google's flying satellites, by John.Banister · · Score: 1

      At least billions. The Teledesic idea was a large constellation of LEO satellites - less latency, a smaller target area, lots more of the expensive satellites. I'm not suggesting they give away the service, but rather to sell it at break-even prices (for an at-capacity network) and profit (as previously) from looking at the data and selling advertising. It would be profitable in the long run, if the satellites didn't get shot down.

    6. Re:If Google's flying satellites, by perryizgr8 · · Score: 1

      geostationary orbit is 36000km, not 42000km

      --
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    7. Re:If Google's flying satellites, by viperidaenz · · Score: 1

      bugger, I got geostationary and geosynchronous mixed up.
      still, it's in the same ballpark for latency.

    8. Re:If Google's flying satellites, by wonkey_monkey · · Score: 1

      That doesn't mean that all geostationary satellites are 36000km away from everybody.

      --
      systemd is Roko's Basilisk.
  7. Wow, this must be high tech! by hubie · · Score: 5, Insightful

    'The light comes in through a barrel structure, pointed at the Earth, and is bounced around by a series of mirrors, before being focused onto a CCD sensor.

    Hmmmm, some kind of "barrel structure" and "bouncing light around with a series of mirrors". That all sounds pretty futuristic. And here I thought they could get by with just using something like a telescope.

    1. Re:Wow, this must be high tech! by mspohr · · Score: 1

      I think they are using this technology:
      http://www.apartmenttherapy.co...
      10 Ways to Use Mirrors to Make Your Space Look Larger
      See, it's space and magnification...
      Here are a few hot tips from the article...
      1. Group Them Together:
      2. Behind The Stove:
      3. Turn Them On Their Side:
      4. Cabinet Fronts:
      5. Next To Your Dining Room Table:
      6. Floor Length:
      7. Layer Them Up:
      8. Fake A Window:
      9. Beautiful Backsplashes:
      10. Fake Mirrored Furniture:

      From the looks of it, they are using all of these tricks in this new satellite.

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    2. Re:Wow, this must be high tech! by timeOday · · Score: 1
      So read the article:

      With its long cylindrical shape, WorldView-3 looks more like a telescope than a camera and it works on the same principle. The light comes in through a barrel structure, pointed at the Earth, and is bounced around by a series of mirrors, before being focused onto a CCD sensor.

    3. Re:Wow, this must be high tech! by hubie · · Score: 1

      Of course it is a telescope. I'm not sure what the person who wrote the article was thinking; maybe they were thinking the optics would be some kind of big refractive system that snaps on the front of the camera like a Nikon lens. There are many, many telescope designs, but a couple of the defining features of them are that they have cylindrical barrels and they bounce the light that comes into them through a series of mirrors (and lenses too). I'm not sure why the author would think that a space telescope would somehow look like a commercial camera.

    4. Re:Wow, this must be high tech! by Rich0 · · Score: 1

      Well, when you stop and think about it, telescopes and cameras are really just the same thing. At what point do you call a "camera" with a high magnification a telescope, and at what point do you call a "telescope" with a wide field of view a camera?

      You have a device that captures images, and you have an optical system that projects an image onto it. There are a bunch of ways you can design the optical system, and you can find many of them both in telescopes and in things you can plug onto a camera you might take to a sporting event. The main difference tends to be man-portability.

  8. WTF by frovingslosh · · Score: 1

    Unfortunately, the public will be allowed only half that image quality, the best being reserved for the U.S. military.

    This is somewhat to be expected for things like GPS (at least if you ignore that the taxpayers are the ones paying for it). But why is this the case when the instruments are being financed by a private company. Or, to look at it another way, the photos fall into two general categories: those outside the U.S.A. and those inside the U.S.A. It is hard to understand that our military would have many problems with us getting the best images available for locations outside the U.S.A. But it is even harder to understand that the military should get better images of the U.S.A. through Google than we can get ourselves. At least in times of peace and while they claim to not be at war with their own citizens. They have their own spy satellites for the super high resolution images (and don't kid yourself that they don't use them). So how and why has it been decided that we are to get degraded images from a private company when we could get better?

    --
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    1. Re:WTF by magarity · · Score: 1

      Because the military finds out some company is launching a satelite that can take pictures at a certain resolution and simply contracts to exclusively access that. It's a great money maker for Google or anyone else who can launch one.

    2. Re:WTF by cold+fjord · · Score: 1

      But why is this the case when the instruments are being financed by a private company.

      Because the export limitation is based on military utility, not on ownership of the company. Most weapons and other military equipment is produced by private companies, even if in some cases it is using government equipment or facilities to do so.

      If Apple were to branch out into military equipment, even if they didn't sell to the US government, wouldn't you want someone watching what happens with iMissile shipments?

      But it is even harder to understand that the military should get better images of the U.S.A. through Google than we can get ourselves. At least in times of peace and while they claim to not be at war with their own citizens.

      A couple of things there. First, many things of interest to enemies, adversaries, or terrorists don't move. If you take their picture once, it's always there until you remove the picture. The water treatment plant for your city? It won't be moving anytime soon, including the roads, tanks, fences, and ground cover. Second, the US is involved in military conflict at present against al Qaida, the Taliban, and associates. Iran has agents and allies in the US, thousands of them, and plans to hit the US as it desires.

      Iranian commander: We have targets within America

      Finally, that line of "they claim not to be at war with their own citizens" is tedious demagoguery. If the US was at war with its citizens I think the results would be more dramatic than limiting the resolution on satellite photographs you can purchase.

      .

      --
      much of left-wing thought is a kind of playing with fire by people who don't even know that fire is hot - George Orwell
    3. Re:WTF by davester666 · · Score: 4, Insightful

      Yes. They would be spying on the general population. They would be busy video installing camera's in major cities. They would tracking who you called, emailed, or texted. They would have roving armed groups descend on a location and demand people's identities and search their persons and belongings.

      Crazy stuff like that. Good thing we're in the land of the free, where stuff like this would never happen.

      --
      Sleep your way to a whiter smile...date a dentist!
    4. Re:WTF by cold+fjord · · Score: 1

      In short, you agree that there isn't a general war on American citizens.

      --
      much of left-wing thought is a kind of playing with fire by people who don't even know that fire is hot - George Orwell
    5. Re:WTF by davester666 · · Score: 1

      no.

      --
      Sleep your way to a whiter smile...date a dentist!
    6. Re:WTF by cold+fjord · · Score: 1

      So where are the battles? Where are the mass arrests? Where are the ambushes? What cities are surrounded or occupied by the army or marines?

      All you seem to have shown is some border enforcement, some police activity, some surveillance activity, and that's about it. That isn't much of a "war."

      --
      much of left-wing thought is a kind of playing with fire by people who don't even know that fire is hot - George Orwell
    7. Re:WTF by davester666 · · Score: 1

      "some surveillance activity"...way to just sweep it under the rug that EVERYONE within the borders of the US is being actively surveilled if they use any form of 18th century or newer form communication.

      The President has the right to grab anyone off the street, remove that person from the country, and hold them somewhere else, indefinitely, without charge, and without notifying anyone. But this is OK, because the current president promises not to use that power unless absolutely necessary.

      Of course, how can anyone prove he has or has not used this power, because if he has, the person has just disappeared. It would only show up as a missing person. Perhaps a kidnapping if somebody saw the person being taken.

      But we're all friends here!

      --
      Sleep your way to a whiter smile...date a dentist!
  9. Trees by rea1l1 · · Score: 1

    Another reason to plant more trees.

  10. Re:We beleive you Google by Ex-MislTech · · Score: 1

    Google's primary initial funder = InQtel = CIA

    https://en.wikipedia.org/wiki/...

    --
    google "32 trillion offshore needs IRS attention"
  11. Resolution by Vermonter · · Score: 1

    So how exactly does this 0.5 meter resolution compare to the current resolution on google's sattelite pics? Seems to me like the current pics have pixels thinner than 0.5 meters... I feel like I am missing something? I don't really know much about photography, so maybe someone can fill me in.

  12. Re:Resolution by coolsnowmen · · Score: 1

    Just a guess, It might be more of a vertical integration answer than a quality of your local pictures one.

    If they have to get their map data from someone else, at what ever most-recent time is available, at what ever resolution is available-- it might be nicer to get more regular dumps data you have more control over from the same satellite.

  13. Irony, you are delicious. by Severus+Snape · · Score: 1

    "We're sorry but this site is not accessible from the UK as it is part of our international service and is not funded by the licence fee."

    Not cool BBC, not cool.

    1. Re:Irony, you are delicious. by Bender+Unit+22 · · Score: 1

      Ouch. I smell politics.

  14. Re:Resolution by maeka · · Score: 3, Informative

    Seems to me like the current pics have pixels thinner than 0.5 meters... I feel like I am missing something?

    In many (most?) developed western areas the images are from planes, not satellites. There is a great deal of high-res aerial photography on the open market and Google has used much.

    The development being discussed in the article will benefit outlying areas and places where having temporal density is useful.

  15. Something doesn't make sense, at least for the USA by Andy+Dodd · · Score: 1

    "“Once a year they pick cities like Denver or London and rescan them and they get it into their database – how often Google buys those images and updates its maps, is up to them.”
    I'm surprised that Google is still buying DigitalGlobe imagery for the continental USA, ESPECIALLY for major metropolitan areas.

    Most states have state-level orthoimagery collection programs, and as a result, there is high-quality aerial imagery significantly exceeding these satellites in quality over most of the USA, especially in metropolitan areas.

    For example, New York State has 2 foot (24 inch) resolution across the entire state (only slightly worse than DigitalGlobe's best quality available), and over much of the state has 1 foot (12 inch) and even 0.5 foot (6 inch) resolution, the latter of which is better than what DG offers government customers. This data is under similar extremely permissive licensing to most other government GIS data such as TIGER. (Anyone can download NYGIS orthoimagery, and this same imagery is what Google uses for Maps/Earth for "satellite" which is really "aerial")

    Pennsylvania has similar quality statewide imagery. Same for New Jersey (1 foot in the case of NJ).

    --
    retrorocket.o not found, launch anyway?
  16. Re:Resolution by Nukenbar · · Score: 1

    most close in google photos are taken via aerial photography.

  17. Re:Resolution by shentino · · Score: 1

    Dick Name System?

  18. First robots, now this by boorack · · Score: 1

    Looks like new and cool revenue stream for Google. Are they becoming military contractor for war criminals^H^H^H^H^H^H^H^H^HUS Army ?

  19. So, they admit to 25cm. by SuricouRaven · · Score: 2

    That means it's probably safe to assume the ones we're not allowed to know of are substantially better than that.

  20. Re:Hey bigmouth by SavvyPlayer · · Score: 2

    Congratulations, your writing instantly caused me to recollect a theorem that I haven't thought about in over 15 years: "The Earth has 4 days in one 24 hr cycle". Check it out, you might appreciate this work and learn a thing or two about effective argumentation style. #timecube

  21. I wonder by koan · · Score: 1

    What would happen if a civilian entity launched high res sats and allowed civilians to use it at the highest res.

    --
    "If any question why we died, Tell them because our fathers lied."
  22. Re:Something doesn't make sense, at least for the by EmperorArthur · · Score: 1

    Am I the only person who considers it interesting that DigitalGlobe is prevented from selling high resolution images by the US while state governments are practically giving away even higher resolution images. This kind of crap is why conspiracy theories are so common. Though, my bets on good old government incompetence.

    --
    So lets pretend that we've just completed writing this code, as opposed to having just completed sabotaging it -Altera
  23. US Militairy? by SuperDre · · Score: 1

    what the hell does US militairy have to do with satelites being designed and payed for by google? the militairy doesn't have anything to say about what is allowed or not..

  24. Re:So BBC article not available in UK? by curty · · Score: 1

    or get Google Translate to do it for you:

    http://translate.google.com/tr...