Broadband planar array multi-beam forming method and amplitude comparison angle measurement method

• Main Authors: CHEN YIFEI, FAN SHENGZHAO, ZHANG ZHENHUA, WANG QI, LI JINBING, LIU XIANJUN
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2023
• 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 broadband planar array multi-beam forming method and an amplitude comparison angle measurement method. The broadband planar array multi-beam forming method comprises the following steps: establishing a normalized spatial domain frequency model in a spatial rectangular coordinate system; performing homogenized frequency sampling on the two-dimensional spatial domain DFT, and designing a beam forming coefficient according to the homogenized frequency sampling; carrying out multi-beam forming calculation on digital acquisition signals of each array element of the broadband planar array based on a designed beam forming coefficient; and carrying out space-frequency two-dimensional joint detection on a multi-beam forming result, and outputting information such as the frequency, the beam number and the adjacent beam amplitude of a detected signal. The amplitude comparison angle measurement method comprises the following steps: based on a beam forming coefficient, establishing an amplitude r