Research on aperture-level simultaneous transmit and receive

• Main Authors: Jian Qiu, Yuan Yao, Guangxin Wu
• Format: Article
• Language: English
• Published: Wiley 2019-09-01
• Series: The Journal of Engineering
• Subjects: array signal processing; matrix algebra; vectors; object detection; radar transmitters; radar receivers; radar detection; adaptive digital beamforming; uniform linear array; cost function; beam pointing constraints; optimal weighted vector; linearly constrained minimum variance rule; aperture-level simultaneous transmit and receive; coupling matrix constraints; target detection
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0693

This study uses adaptive digital beamforming to provide high isolation between a transmitter and a receiver, which proved effective in achieving simultaneous transmit and receive. Uniform linear array is chosen as the research object, and the cost function is constructed by combining the coupling matrix and beam pointing constraints; then the optimal weighted vector is obtained under the linearly constrained minimum variance rule. The method will provide at least 110 dB isolation without affecting the performance of target detection, which provides certain reference significance in engineering.