They're the ones that started cost inflation in the 1970's that has gotten us to this point. They don't even know they screwed it up...and we expect them to fix it?
Do you upgrade your computer every time a new processor comes out????
Same reasoning (sorta) applies to GPS. Why throw away a $100,000,000 satellite when it hasn't died yet?
The newer satellites do have some expanded capabilities, but don't plan on seeing those operationally for 5 to 8 years. (It's a long story of governmental mismanagment and strife)
Actually, because of the incredibly low power GPS transmits at...it is possible to design a GPS jammer that broadcasts BELOW the ambient noise floor that will still impact GPS receivers.
I'm so bloody tired of this argument. Do you really believe the US military will turn off GPS? Can you imagine the incredible press field day if an aircraft, ship, or hell even a car had some sort of problem?
Totally implausible when you look at the consequences.
I guess my experience has been one of incredible frustration with this entire process.
The requirements on the box say Internet connection required and I have no problem with that.
Unfortunately, my internet connection behind a (non configurable) firewall will not work with Steam. They did not tell me that before I bought the stupid game, and now that I've opened it and cannot return it, I'm screwed!
I have no problem with authentication, but please give me some other method of authentication other than a program that will not work behind a firewall!
I hope I'm the minority, but don't plan on me buying anything else from these guys.
Robotic mowers are a difficult solution for GPS, it gets more difficult based on how tightly the homes are in your neighborhood (GPS accuracy is HIGHLY dependent on satellite geometry). Honestly the best solution would be an inertial nav system with an all-in-view GPS receiver and WAAS updates...but they're expensive.
For the most part...if the accuracy you get from the GPS unit you have is sufficient....you have no need for this.
If however, you have higher accuracy requirements like less than 10m @ 95% then you need some form of augmentation....which this software will help you to acquire.
Here's a list of some of the features and what they'll do for you:
It will allow you to convert GPS time
Allow you to break out time and ephemerides
It includes models for atmospheric (troposphere) and ionospheric delay (largest error source for all-in-view civil receivers)
Includes a software implementation of RAIM (Receiver Autonomous Integrity Monitoring) which prevents bad satellites from screwing you over
Computes out a possible ionospheric delay for your receiver
Allows you to perform residual analysis on your measurements (helps you figure out whether the satellites are hosed or you are)
The government encrypts the Pseudo Random Code with an encryption key that makes it hard to track.
Y-code is simply encrypted P Code.
Basically, this software package allows you to increase your accuracy, export and import GPS information, and model the ionosphere (a major source of error using the Coarse Acquisition (civilian) signals.
I'll give you a billion dollars if you can prove this, because it quite simply isn't true. Take it from someone who used to work at 2SOPS (The military unit in charge of care and feeding of the satellites). To be honest, the only change in GPS performance over the last few years is to make it better!
Can you imagine the legal ramifications if the government was to degrade the performance selectively without notifying users properly? What if an airplane crashed?
Hutsell!!!! He's a trip! If you haven't seen him lately he's got hair past his shoulders...still works at 2SOPS for Analysis on clocks. I'm separating really quick, but its been a good tour for me.
If you can get involved with the 148 SOPS go for it, but I hear the thing they're supposed to do is being delayed. It would be cool to have the backup out there though. Pre-Pass by heart...you're much more devoted than me.
I am involved....let's just pretend I'm on the inside looking out (fly them now). We made the signal better during the second gulf was as well (check out www.spaceflightnow.com 1/2 way down the page)
1. GPS satellites have never "degraded" service over an area. Anyone who says so, doesn't have the right data, or has been smoking the ganja a little bit too much. To anyone who doubts this...How bad do you think the PR would be if GPS was unable to be used for airline navigation, or search and rescue, or worse than that caused some crash?
2. The satellite launched was a Block IIR vehicle. Block IIR-M and IIF vehicles are still in a very low orbit (close to sea level..haven't been launched.)
3. We can't burn satellites in from semi-synchronous orbit (the GPS orbit) using today's technology. When they're disposed of we kick them away from the earth a couple of hundred kilometers. Orbital degradation is slight at semi-synchronous, but the satellites will interfere with each other in about 6,000 years. I hope we'll be able to clean it up before then.
4. GPS Signals arrive on two frequencies, L1 (L1 = 1575.42 MHz) and L2 (L2 = 1227.6 MHz). C/A code (which is FREE as in air to civil users) is modulated onto the L1 carrier signal. It has never been encrypted. It has been degraded (selective availability, the method of degradation, was turned off in 2000) but is now every bit as accurate as the military signal. The only significant advantage the military receivers have is the ability to correct for ionospheric defraction using both frequencies.
5. The major driver behind Galileo (EU GPS) is economics. Basically the US has a handle on a 12 billion dollar industry and the EU wants its share. They're expecting to charge money for the same service the US gives out for free! Somebody failed economics.
Feel free to respond with any questions, I'd love to answer them.
GPS has spawned a 12 billion dollar a year industry, it is relied upon solely for navigation in numerous countries without the ability to develop rudimentary navaids, and it helps broadcast american goodwill worldwide.
Capitalism dictates that GPS will never go away
The only people I'd opt out of GPS are the French.
Don't you see that there is a need for a global dependable source of navigation information? Because of its encryption, this information on the GPS signal is able to be used as this dependable, authentic source. Anyone who thinks that you 'should' have the right to decode this signal is either incredibly stupid, or incredibly naive. Believe it or not, there are government systems out there which are solely concerned to providing good information to the public. Giving the general public the capability to decode GPS signals would result in the easy production of GPS spoofers, GPS meacons, and coherent Jamming. Unless you don't like your civil infrastructure.....think again.
Unfortunately, I'm afraid I must disagree with the majority of the statements posted. The VAST majority of the classified information out there is classified legitimately. Our government has information that will be harmful in one way or another if it is released to the general public. If you don't agree with this concept, do not agree to be a trustee of said information. Sadly enough, some of this information can result in people's death.
But there is already a control on the abuse of classified information, it is called your own moral code and civil disobedience. If the government is intentionally abusing the public's rights by classifying documents unnecessarily...or classifying documents to cover up full disclosure of our own mistakes, then I believe you have a legitimate cause for civil disobedience. I'm implying civil disobedience in the classical sense. You put thought into your actions, acknowledging that you will be prosecuted for your actions, but doing it for the good of the country (not to mention your own soul). Take the punishment, perhaps become a martyr, but more likely be exonerated if what you were doing is legitimate.
Disclosure, open source, and free speech are awesome tools....but I think everyone must acknowledge that some of this information is sensitive. In this period of some of the most damaging classified incidents ever.....shouldn't someone be held accountable for releasing our secrets to the Chinese?
Hope this doesn't turn into flamebait.
~AG
Depends on how accurate the NTP gets....GPS has a secondary mission of being within 100ns of UTC time. SA cancellation does not affect this mission. Hope it helped.
Slashdot Mirror
http://www.americanthinker.com/2009/09/understanding_the_cause_of_hea.html
They're the ones that started cost inflation in the 1970's that has gotten us to this point. They don't even know they screwed it up...and we expect them to fix it?
It makes me think of the classic demotivator: http://www.despair.com/government.html
Sigh.
Oh well, at least we don't have any money to pay for it....(not that it matters, apparently)
Do you upgrade your computer every time a new processor comes out????
Same reasoning (sorta) applies to GPS. Why throw away a $100,000,000 satellite when it hasn't died yet?
The newer satellites do have some expanded capabilities, but don't plan on seeing those operationally for 5 to 8 years. (It's a long story of governmental mismanagment and strife)
Actually, because of the incredibly low power GPS transmits at...it is possible to design a GPS jammer that broadcasts BELOW the ambient noise floor that will still impact GPS receivers.
Sparkus
I'm so bloody tired of this argument. Do you really believe the US military will turn off GPS? Can you imagine the incredible press field day if an aircraft, ship, or hell even a car had some sort of problem?
Totally implausible when you look at the consequences.
Yes,
Galileo will require new receivers, but the advantages will be that you can use both services on one receiver.
Apparently Galileo is trying to charge for what the USA gives out for free. Good luck on that business model!
The requirements on the box say Internet connection required and I have no problem with that.
Unfortunately, my internet connection behind a (non configurable) firewall will not work with Steam.
They did not tell me that before I bought the stupid game, and now that I've opened it and cannot return it, I'm screwed!
I have no problem with authentication, but please give me some other method of authentication other than a program that will not work behind a firewall!
I hope I'm the minority, but don't plan on me buying anything else from these guys.
Robotic mowers are a difficult solution for GPS, it gets more difficult based on how tightly the homes are in your neighborhood (GPS accuracy is HIGHLY dependent on satellite geometry). Honestly the best solution would be an inertial nav system with an all-in-view GPS receiver and WAAS updates...but they're expensive.
If however, you have higher accuracy requirements like less than 10m @ 95% then you need some form of augmentation....which this software will help you to acquire.
Here's a list of some of the features and what they'll do for you:
hope it helped
The government encrypts the Pseudo Random Code with an encryption key that makes it hard to track.
Y-code is simply encrypted P Code.
Basically, this software package allows you to increase your accuracy, export and import GPS information, and model the ionosphere (a major source of error using the Coarse Acquisition (civilian) signals.
I'll give you a billion dollars if you can prove this, because it quite simply isn't true. Take it from someone who used to work at 2SOPS (The military unit in charge of care and feeding of the satellites). To be honest, the only change in GPS performance over the last few years is to make it better!
Can you imagine the legal ramifications if the government was to degrade the performance selectively without notifying users properly? What if an airplane crashed?
look at the current performance curve....We'll be sub 1 meter by that time.
He's a trip! If you haven't seen him lately he's got hair past his shoulders...still works at 2SOPS for Analysis on clocks. I'm separating really quick, but its been a good tour for me.
If you can get involved with the 148 SOPS go for it, but I hear the thing they're supposed to do is being delayed. It would be cool to have the backup out there though. Pre-Pass by heart...you're much more devoted than me.
It's a cool business to be in.
2. The satellite launched was a Block IIR vehicle. Block IIR-M and IIF vehicles are still in a very low orbit (close to sea level..haven't been launched.)
3. We can't burn satellites in from semi-synchronous orbit (the GPS orbit) using today's technology. When they're disposed of we kick them away from the earth a couple of hundred kilometers. Orbital degradation is slight at semi-synchronous, but the satellites will interfere with each other in about 6,000 years. I hope we'll be able to clean it up before then.
4. GPS Signals arrive on two frequencies, L1 (L1 = 1575.42 MHz) and L2 (L2 = 1227.6 MHz). C/A code (which is FREE as in air to civil users) is modulated onto the L1 carrier signal. It has never been encrypted. It has been degraded (selective availability, the method of degradation, was turned off in 2000) but is now every bit as accurate as the military signal. The only significant advantage the military receivers have is the ability to correct for ionospheric defraction using both frequencies.
5. The major driver behind Galileo (EU GPS) is economics. Basically the US has a handle on a 12 billion dollar industry and the EU wants its share. They're expecting to charge money for the same service the US gives out for free! Somebody failed economics.
Feel free to respond with any questions, I'd love to answer them.
Capitalism dictates that GPS will never go away
The only people I'd opt out of GPS are the French.
Don't you see that there is a need for a global dependable source of navigation information? Because of its encryption, this information on the GPS signal is able to be used as this dependable, authentic source. Anyone who thinks that you 'should' have the right to decode this signal is either incredibly stupid, or incredibly naive.
Believe it or not, there are government systems out there which are solely concerned to providing good information to the public. Giving the general public the capability to decode GPS signals would result in the easy production of GPS spoofers, GPS meacons, and coherent Jamming. Unless you don't like your civil infrastructure.....think again.
Unfortunately, I'm afraid I must disagree with the majority of the statements posted. The VAST majority of the classified information out there is classified legitimately. Our government has information that will be harmful in one way or another if it is released to the general public. If you don't agree with this concept, do not agree to be a trustee of said information. Sadly enough, some of this information can result in people's death. But there is already a control on the abuse of classified information, it is called your own moral code and civil disobedience. If the government is intentionally abusing the public's rights by classifying documents unnecessarily...or classifying documents to cover up full disclosure of our own mistakes, then I believe you have a legitimate cause for civil disobedience. I'm implying civil disobedience in the classical sense. You put thought into your actions, acknowledging that you will be prosecuted for your actions, but doing it for the good of the country (not to mention your own soul). Take the punishment, perhaps become a martyr, but more likely be exonerated if what you were doing is legitimate. Disclosure, open source, and free speech are awesome tools....but I think everyone must acknowledge that some of this information is sensitive. In this period of some of the most damaging classified incidents ever.....shouldn't someone be held accountable for releasing our secrets to the Chinese? Hope this doesn't turn into flamebait. ~AG
Depends on how accurate the NTP gets....GPS has a secondary mission of being within 100ns of UTC time. SA cancellation does not affect this mission. Hope it helped.