National University of Defense Technology

Sixin Wang

Wenxiang Liu

Feixue Wang

Xinming Huang

Ke Zhang

Rong Zhou

Zengjun Liu

Guangfu Sun

Jingyuan Li

Zukun Lu

Honglei Lin

Pengcheng Ma

Muzi Yuan

Xiaomei Tang

Hang Gong

Shaojie Ni

Yuchen Xie

Xiaozhou Ye

Kuo Cao

Wei Xiao

Zongnan Li

A design method for a satellite navigation signal system with mixed modulation of direct spread spectrum and frequency hopping includes: modulating the spread spectrum code sequence of multipath signal components; mixing and multiplexing with the signal components corresponding to the same frequency point; forming a baseband code sequence; separating signal components corresponding to the baseband code sequence to obtain separated radio frequency signals; recombining and modulating separated radio frequency signals; controlling the frequency hopping pattern by the frequency hopping code sequence if the separated radio frequency signals are authorized signals, and performing mixed frequency synthesis modulation; performing direct combined radio frequency modulation if the separated radio frequency signals are unauthorized signals, and obtaining the recombined signal component; amplifying the signal power to obtain the direct spread spectrum navigation signal.

Designed method for satellite navigation signal system with mixed modulation of direct spread spectrum and frequency hopping

A method and a device for joint suppression of narrowband and multiple access interference are provided. The method includes: performing time domain windowing processing on a received signal, and performing frequency domain interference processing on a signal after windowing processing to obtain a matched filter and a time domain signal; obtaining reconstructed baseband received data for a signal of each channel; obtaining reconstructed signals after matched filtering; accumulating the reconstructed signals of multiple channels to obtain a reconstructed accumulated value, obtaining a compensation value according to a difference between the time domain signal and the reconstructed accumulated value, and compensating the reconstructed signals with the compensation value to obtain an actual received signal of the each channel; and outputting a joint suppression result.

Method and device for joint suppression of narrowband and multiple access interference

Growing community of inventors

Changsha, China

Sixin Wang