CSI Wireless Inc., a provider of GPS and wireless technology products for automotive, consumer and commercial applications, has been awarded a U.S. patent for its e-Dif software that enables GPS receivers to achieve higher accuracy than available from differential GPS (DGPS).
The software enables a standard GPS receiver, capable of only 10-meter or 15-meter accuracy, to internally generate differential corrections that improve its accuracy to one meter - without the expense or uncertainties of using DGPS signals. e-Dif computes corrections that last for as long as 40 minutes, after which the receiver re-computes a fresh set of corrections that last for another 40 minutes.
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