Radar robust adaptive beam forming method based on sparse representation

• Main Authors: SHUI PENGLANG, CHENG ZENGFEI, LI HUI, HE XUEHUI, ZHAO YONGBEI, ZHANG PANPAN
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2016
• 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 radar robust adaptive beam forming method based on sparse representation. According to the main idea, a transmitting signal wavelength lambda of the radar and a radar array element gap d are set respectively, radar echo signals for L times of snapshots are further acquired, and a covariance matrix Rfor the radar echo signals are calculated and obtained; an angle airspace range for a target is set to be [thetad, thetau], the angle airspace range [thetad, thetau] is divided into K angle values, a conventional beam former Wc for the K angle values in the angle airspace range for the target and a direct matrix inverse beam former Ws for the K angle values in the angle airspace range for the target are calculated respectively, noise power sigma in the radar echo signals and interference signal subspace PI in the radar echo signals are further calculated sequentially, a basis matrix B for the radar echo signals and an expected beam former Wd for the radar echo signals are calculated and ob