Mobile sparse receiving array angle estimation method

• Main Authors: GONG YANYUN, AWAKA, HAN CHUANG, WANG YUEXIAN, XIE JIAN, WANG LING, TAO MINGLIANG, LUO SHUAI, XING ZIJIAN, LI JIANYING, ZHANG ZHAOLIN, YANG XIN
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; PRESENTATION OF DATA; RADIO DIRECTION-FINDING; RADIO NAVIGATION; RECOGNITION OF DATA; RECORD CARRIERS; TESTING

The invention provides a mobile sparse receiving array angle estimation method, which comprises the following steps of: firstly, expanding array element spacing of various traditional array structures, transmitting a periodic signal related to the moving speed of a receiving array at a transmitting end of an MIMO (Multiple Input Multiple Output) radar, and further deducing the space-time invariance of the receiving signal; and then expanding the array aperture of a receiving end by using a passive aperture synthesis technology, and finally processing received data by using methods of straightening, extraction, tensor smoothing, parallel factorization and the like so as to realize estimation of a target angle. According to the method, the array degree of freedom of the system is greatly improved, the inherent multi-dimensional structure information in data is further utilized by using a tensor smoothing method, the array aperture of the MIMO radar is fully utilized by using the Khatri-Rao product, and finally