wangjh:<h3>Conclusion</h3> There are several ways to distort a GPS satellite signal; some arecorrected by the Department of Defense...(2005-03-11 09:52)
wangjh:<h3>Determining Precision Needs</h3> Now that the mechanics of precision have been explained, the nextstep is to figure out ...(2005-03-11 09:41)
wangjh:<h3>Causes of Precision Error</h3> Thereare several phenomenon which can cause poor precision. For example,when satellite ra...(2005-03-11 09:30)