FFT-Based L1 C/A and L2C Combined Acquisition Techniques
In order to acquire the weak signals of the GPS, the signal energy should be exploited as much as possible. A new civil signal L2C is available now. If we can use signals from one satellite but on different frequencies, the processing gain can be increased by combining the energy of the two signals. This paper researches on four different detection schemes utilizing combined legacy LI C/A and new L2c signals in the acquisition process based on FFt method. Each of the four detection schemes based on the frequency and code delays relations of the two signals. Simulations are done to evaluate the performance of each detection scheme as well as the common non-coherent LI C/A acquisition only. Advantages of the combined methods are obvious. Especially, we adopted a comparing NCH method, and a distinctive and attractive performance is achieved.
Han Shuai Ma Ruo-fei Wang Wen-jing Meng Wei-xiao Zhang Yi
Communication Research Center, Harbin Institute of Technology Space Star Technology
国际会议
International Conference on Space Information Technology 2009(2009年第三届空间信息技术国际会议)
北京
英文
1-5
2009-11-26（万方平台首次上网日期，不代表论文的发表时间）