Simulation on C/A codes and analysis of GPS/pseudolite signals acquisition  

作　　者：ZHANG Lei Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China 

出　　处：《Science China(Technological Sciences)》2009年第5期1459-1462,共4页中国科学（技术科学英文版）

基　　金：Supported by the Start-up Research Foundation of the Dean Excellent Award of Chinese Academy of Sciences.

摘　　要：The global positioning system(GPS) is an extremely mature technique in the navigation and position-ing field.However,there are still some limits in some aspects and for some special applications.Spe-cially,the performance of GPS needs to be improved with technological advances.As a GPS-like ground transmitter,the pseudolite provides a new research direction to achieve high positioning ac-curacy and reliability.In this paper,we describe the core technologies of designing and simulation on the coarse acquisition codes in constructing the pseudolite system.In the GPS/pseudolite integration system,the signal PRN 36 of the pseudolite and the GPS satellites signals are acquired in the modified receiver based on the computer software platform.It is shown that the pseudolite technology is ideally suited to augment the GPS alone and provide greater integrity,availability,and continuity of the navi-gation positioning system,especially for indoor use.The global positioning system (GPS) is an extremely mature technique in the navigation and positioning field. However, there are still some limits in some aspects and for some special applications. Specially, the performance of GPS needs to be improved with technological advances. As a GPS-like ground transmitter, the pseudolite provides a new research direction to achieve high positioning accuracy and reliability. In this paper, we describe the core technologies of designing and simulation on the coarse acquisition codes in constructing the pseudolite system. In the GPS/pseudolite integration system, the signal PRN 36 of the pseudolite and the GPS satellites signals are acquired in the modified receiver based on the computer software platform. It is shown that the pseudolite technology is ideally suited to augment the GPS alone and provide greater integrity, availability, and continuity of the navigation positioning system, especially for indoor use.

关 键 词：GPS PSEUDOLITE coarse acquisition(C/A) CODE ACQUISITION 

分 类 号：P228.4[天文地球—大地测量学与测量工程]