Open AccessLong‐time coherent integration for high dynamic DSSS signal
Author(s) -
Wang Fengyu,
Yang Jun,
Tian Jing,
Cui Wei,
Xiang Jinzhi
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0721
Subject(s) - direct sequence spread spectrum , computer science , signal (programming language) , doppler effect , time delay and integration , spread spectrum , function (biology) , time shifting , algorithm , electronic engineering , telecommunications , code division multiple access , physics , engineering , astronomy , evolutionary biology , computer vision , biology , programming language , transmission (telecommunications)
A novel coherent integration method for high dynamics direct sequences spread spectrum (DSSS) signal is presented. The presented method is based on adjacent cross‐correlation function (ACCF) and Lv's distribution (LVD). ACCF is firstly used to compensate the code phase drift and reduce the Doppler frequency migration order. After that, LVD is used to accomplish the integration and obtain the parameter estimates. The presented method can estimate motion parameters without any searching procedure. Compared with the existing methods, the presented method can achieve a good balance between the computational cost and the detection and estimation performance. Numerical simulations are provided to verify the effectiveness of the proposed method.