Weak Signal and Anti-jam GPS Receiver Using Full Correlation Grid
Global Positioning Systems (GPS) are widely utilized in both commercial and military applications. Along with the increased reliance upon the GPS comes a growing need to provide more accurate and reliable GPS positioning. GPS signals can be adversely affected by various factors including, for example, low signal strength, noise and GPS jamming devices. Each of these causes the GPS system to provide false and inaccurate positioning data in the particular applications. In turn, this inaccurate or false data can cause devastating effects.
The present Johns Hopkins Applied Physics Lab invention relates generally to a weak signal and anti-jamming Global Positioning System (GPS) receiver and method, and in particular, to a weak signal and anti-jamming Global Positioning System (GPS) receiver and method using full correlation grid detection and estimation. The invention consists of a combination of hardware and software that can be used to recover pseudo range and Doppler information from the GPS signal when it is very weak.
Patent Status: U.S. patent(s) 6724343 issued.CONTACT:
Dr. G. R. Jacobovitz
Phone: (443) 778-9899