Increase of Positioning Robustness By Integration of CDMA and GPS

This paper shows how to integrate CDMA's pilot signals and GPS pseudoranges in order to improve the location accuracy, coverage and robustness to various errors in the position-determination. Since two radio positioning systems are complementary in urban canyons and open areas, the hybrid integration of them gives better performance, especially of wider coverage. Due to signal propagation, ionospheric error, multipath and...