Method and apparatus for substituting sensor data for satellite signal in GPS receiver
JP2002122649A
Digital processing technique for global positioning system receiver
AU6118601A
Low signal-to-noise ratio positioning system
AU6297801A
Method and apparatus for interference reduction
US6049309A
Microstrip antenna with an edge ground structure
US6384798B1
Quadrifilar antenna
US5914685A
Relative position measuring techniques using both GPS and GLONASS carrier phase measurements
US5901183A
Signal correlation technique for a receiver of a spread spectrum signal including a pseudo-random noise code that reduces errors when a multipath signal is present
CA2229069A1
Multipath error reduction in a spread spectrum receiver for ranging applications
US5970400A
Adjusting the timing and synchronization of a radio's oscillator with a signal from an SATPS satellite
US5953367A
Spread spectrum receiver using a pseudo-random noise code for ranging applications in a way that reduces errors when a multipath signal is present