Method for suppressing communication interference in sea clutter based on linear prediction

• Main Authors: ZHAO PENG, LI XIN, YIN ZHIYING, YU YUNCHAO, ZHANG YUSHI, ZHANG ZHEDONG, XIA XIAOYUN, HSU HSIN-YU, WAN JINTONG, LI QINGLIANG, ZHANG JINPENG, LI SHANBIN, LI HUIMING, YIN YALEI, ZHU XIUQIN
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a method for suppressing communication interference in sea clutters based on linear prediction, which comprises the following steps: step 1, echo data received by a radar are recorded as X, and X is an M * K-dimensional complex matrix; step 2, marking whether interference signals exist in each pulse to form a K-dimensional label vector; step 3, performing discrete Fourier transform on the complex matrix; step 4, calculating an interference detection threshold; step 5, carrying out interference filtering processing on the distance frequency domain data of the first pulse; and step 6, performing inverse discrete Fourier transform on the matrix to obtain a time domain data matrix after interference suppression. According to the method disclosed by the invention, linear prediction and interpolation are carried out on interference values of different frequency points by using adjacent non-interference data based on time correlation of sea clutters and target data, so that the target signal