高灵敏度GPS捕获技术研究综述

Review of Acquisition Techniques of High Sensitivity GPS

介绍了高灵敏度GPS捕获技术的概念,按照提升灵敏度方式的不同将当前高灵敏度GPS捕获技术分为信噪比提升方法、互相关干扰抑制方法和辅助GPS捕获方法,分析了三种方法各自的特点及提高灵敏度所采用的途径,论述了高灵敏度GPS捕获技术的国内外研究现状,指出了高灵敏度GPS捕获技术的关键技术和未来的发展趋势。

The conception of acquisition techniques of high sensitivity GPS is introduced. According to the way of improving the sensitivity of GPS, the acquisition techniques of current high sensitivity GPS is classified into three modes, which are techniques of upgrading the SNR method, cross-correlation interfer- ence mitigation method and assisted GPS acquisition method. On the basis of analyzing the methods of high sensitivity GPS modes, their features are compared and analyzed respectively. The development of techniques of high sensitivity GPS at home and on abroad are reviewed. The key technologies and future trend of high sensitivity GPS acquisition techniques are pointed.