Interferometer direction finding method and system based on array antenna

• Main Authors: ZHEN TIZHI, WANG XIAOLIN, YAN FUHU, CHENG QI, ZHU RUNTAO, XIAN DENGFEI
• Format: Patent
• Language: Chinese; English
• Published: 30.12.2022
• 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 an interferometer direction finding method and system based on an array antenna, and relates to the technical field of electronic countermeasure, and the technical scheme is characterized in that at least three array elements are selected from the array antenna, and an interferometer antenna array combining a short baseline and a long baseline is reconstructed; the interferometer antenna array and the array antenna share a signal transceiver and/or a signal processor; the array antenna realizes a narrow-beam high-gain digital beam forming receiving function; and the interferometer antenna array realizes the direction-finding receiving function of the interferometer with wide beam and high angle measurement precision. According to the invention, the array antenna, the signal transceiver and the signal processor are multiplexed, part of array elements in the array antenna are flexibly extracted, an interferometer antenna array is constructed, and a monitoring function based on digital be