GPS, Differential GPS, and WAAS isn't accurate enough for high quality survey work. All of these of limited accuracy of more 1 meter, whereas any decent survey should measure error hopefully less than 10 millimeters.
Wrong, each of these technologies is sufficiently accurate for surveying. GPS alone has (can have) an error rate of less than 2cm over 50 miles. You just have to have a known point. Everything can be calculated in real time or post processed. Most systems like this (certified for surveying) are well into the $20ks, unfortunately.
Good Resouce: http://www.icivilengineer.com/Surveying/GPS/
P.S. It can take up to 5 minutes to get a single point, even in the clear. If your under even a moderate tree cover, you're screwed with GPS.
Re:Building a new STS the right way.
on
More on Columbia
·
· Score: 1
I wanted to read your comment, but there's NO FORMATTING!! I'm sure your post was informative and well thought out, but I'm not bending my brain around a novella sized paragraph.
Yes, it's all good and dandy in theory and makes you look very clever indeed, but count how many unknowns you have to know before you can attack a site in this way, do some basic probability math and your chance of success is so low you might as well phone the web master and ask them what the password is.
Which, with SQL server admins, might actually work!
Not true in the slightest...
Check out the LEAF project.
I currently have a LEAF box running off of a 32MB flash card with two nics and a P75. It handles over 2000 simultaneous connections and 2Mbit without breaking a sweat. Has a nice web interface, bandwith monitor, tarpit for scanners, LCD display, and months of logs, all with FLASH.
Slashdot Mirror
9. Double Profit...
Cans and string?
This "interesting article", while interesting, is almost 10 years old. Any follow up on how things actually went down?
Not to mention the extended battery life that comes included.
I'm gonna get one.
Wrong, each of these technologies is sufficiently accurate for surveying. GPS alone has (can have) an error rate of less than 2cm over 50 miles. You just have to have a known point. Everything can be calculated in real time or post processed. Most systems like this (certified for surveying) are well into the $20ks, unfortunately.
Good Resouce: http://www.icivilengineer.com/Surveying/GPS/
P.S. It can take up to 5 minutes to get a single point, even in the clear. If your under even a moderate tree cover, you're screwed with GPS.
I wanted to read your comment, but there's NO FORMATTING!! I'm sure your post was informative and well thought out, but I'm not bending my brain around a novella sized paragraph.
Check out their page for January 22: January 22
This is not vigilante justice, this is revenge.
There is no posse, no rope, no hanging.
This is signing some asshole up to every stinking e-mail list possible. Just like he does to us.
Which, with SQL server admins, might actually work!
Not true in the slightest...
Check out the LEAF project.
I currently have a LEAF box running off of a 32MB flash card with two nics and a P75. It handles over 2000 simultaneous connections and 2Mbit without breaking a sweat. Has a nice web interface, bandwith monitor, tarpit for scanners, LCD display, and months of logs, all with FLASH.