GPS的C/A码产生，BPSK调制，及频谱显示-GPS s C/A code generate,and BPSK modualtion

GPS的CA码产生过程，对CA码进行bpsk调制后得到一个GPS中频信号，画出其时域和频域图-GPS-CA code generation process, the CA code bpsk modulated IF signal of a GPS, to draw the time-domain and frequency domain Figure

对GNSS中的BPSK、BOC两种调制方法进行分析，从其时域表达式、功率谱密度函数表达式出发，分析其性能、对码跟踪精度的影响。(The two modulation methods of BPSK and BOC in GNSS are analyzed. From the expressions of time expressions and power spectral density functions, the performance and code tracking accuracy