Satellite positioning system receiver operating in presence of parasitic radio waves

摘要

The parasitic trajectory rejection satellite positioning system has coded waves returning by a direct path, and also waves delayed in angle and time. A propagation true time is estimated in a tracking loop, maximizing the intercorrelation function. The required signal is defined as a time function by estimating path delay trajectories (81) and starting a code replica (84). A second process estimates angle delay (82) and unrolls a second code replica (83). Intercorrelation is produced by multiplication.