A Method of Direction-Finding based on Direct Sequence Spread Spectrum Signal Correlation Interferometer

Abstract

The combination of spread-spectrum signal and correlation interferometer can achieve high precision, low interception and anti-interference direction finding, which is very important for autonomous cooperative positioning with aircraft formation.This paper presents a method to extract phase difference of direct sequence spread spectrum signal based on correlation peak position detection so as to realize spread spectrum signal correlation interferometer direction finding method, the simulation results show that the method has good performance, under the condition of low SNR of can obtain higher direction finding precision, greatly improving the concealment and anti-jamming in the system of direction finding.