Mechanic scan meter-wave radar monopulse angle measuring method based on iterative processing

• Main Authors: SU HONGTAO, HE XUEHUI, SU TAO, ZHAO YONGBEI, PANG XIAOJIAO, LIU HONGWEI
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2016
• 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 belongs to the technical field of radars, and discloses a mechanic scan meter-wave radar monopulse angle measuring method based on iterative processing. The method can reduce the influence of noise on signals and reduce the angle measuring error. The method comprises the steps of: uniformly dividing an antenna into two sub-arrays to transmit pulse signals; performing coherent accumulation on the received echo signals to obtain accumulated data; performing phase adjustment on the received echo signals, selecting a maximum amplitude, and finding the angle value theta max of the corresponding pulse; separately selecting (L-1)/2 angle values theta 1 on the left and the right of the angle theta max, and finding corresponding amplitudes, thus obtaining two groups of new data; obtaining a sum beam and a difference beam from the two groups of data; performing sum-difference beam monopulse angle measurement on the sum beam and the difference beam to obtain a target off-axis angle; endowing the off-axis a