Open AccessThe Design and Implementation of GPS CA Code Simulation Experiment
Author(s) -
Chuanjun Hu,
Tinghui Li,
Feijiang Huang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/6/062080
Subject(s) - executable , global positioning system , gps signals , computer science , code (set theory) , signal (programming language) , direct sequence spread spectrum , matlab , pseudorandom noise , spread spectrum , noise (video) , assisted gps , code division multiple access , electronic engineering , real time computing , telecommunications , engineering , programming language , computer vision , set (abstract data type) , image (mathematics)
The research on GPS C/A code has certain practical significance. This paper chiefly explain the principles of C/A code generation. On the basis of studying the principle of GPS pseudo-random sequence C/A code generation, the 1.023MHz C/A code is simulated to modulate and transmit 50Hz navigation message information at the frequency of L1 carrier signal. Based on the GUI interface of MATLAB, an executable program is designed. By clicking the button, the time domain diagram and spectrum diagram of navigation message signal, C/A code, L1 carrier signal, spread spectrum, modulation and noise added signal are generated, and the spectrum analysis of GPS L1 satellite signal is completed on MATLAB.