FDA–MIMO radar transmitting subaperture design and anti-interference performance analysis
Source abstract
Abstract
The hybrid of the frequency diversity array (FDA) radar and multiple-input multiple-output (MIMO) radar, namely, FDA–MIMO radar, provides more degrees of freedom and improves the overall performance of the system. The essence of FDA–MIMO radar transmitting subaperture design is to divide the transmit array into multiple subapertures to improve the interference suppression capability of the radar. Among them, orthogonal waveforms are transmitted between each subaperture, and each element inside the subaperture transmits the same waveform. Aiming at the problem of how the subaperture design of the FDA–MIMO radar affects its interference suppression performance, we analyzed the two aspects of the normalized beampattern and (non-)adaptive beamforming. We conclude that when interference is dominant, setting the number of subapertures to half of the number of transmit array elements can effectively reduce the sidelobe level and increase the output signal-to-interference-plus-noise ratio. A large number of simulation results verify the effectiveness and superiority of this method.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Radar Systems and Signal Processing · Antenna Design and Optimization · Advanced SAR Imaging Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Air and Missile Defense College, Air Force Engineering University 1 , Xi’an 710051, China
College of Information and Communication, National University of Defense Technology 2 , Wuhan, Hubei 430000, China
Funding
Natural Science Foundation of Shanxi Province · The Chinese Postdoctoral Science Foundation
References (40)
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