Colocated MIMO radar waveform optimization with receive beamforming

Zhou, Shenghua; Lu, Jing; Varshney, Pramod K.; Wang, Jianlai; Ma, Hui; Liu, Hongwei

doi:10.1016/j.dsp.2019.102635

Cited by 19 publications

(14 citation statements)

References 21 publications

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“… Characteristics of References Category Subcategory References Number Arrangement of array spacing Distributed / [ 5 ] Colocated [ 6 , 7 , 17 , 18 , 34 , 38 , 39 ], etc. Waveform design Consider only the transmitter Transmit covariance matrices [ 15 , 17 , 18 , 38 , 39 ] Transmit beampattern [ 7 , 8 , 9 , 10 , 19 , 20 ] Joint transmitter and receiver / [ 14 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , …”

Section: Table A1mentioning

confidence: 99%

“…In [ 8 , 9 , 10 , 19 , 20 ], the waveform design of the transmit beampattern is studied. It should be noted that in a complex and multi-interference environment, this type of waveform design method that only optimizes the transmitter does not make full use of the degrees of freedom of the receiver [ 21 , 22 ]. The designed waveform and the output SINR are not optimal.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to using convex optimization to solve the waveform, there are other design ideas [ 22 , 38 , 39 , 40 ]. For instance, Zhou and Lu et al introduce attenuation factors in [ 22 ] and define three sets of corner frequencies to formulate waveform design criteria to reduce the peak sidelobe level (PSL).…”

Section: Introductionmentioning

confidence: 99%

to design the transmit waveform, optimize the output SINR, and suppress unknown and unwanted sidelobe interference to reduce sidelobes.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the designed waveform usually imposes some constraints on the waveform in actual engineering applications, for example, constant envelope constraint [ 3 , 8 , 9 , 10 , 11 , 12 , 16 , 18 , 21 , 27 , 30 , 32 , 34 , 35 , 36 , 38 , 50 ], PAR constraint [ 8 , 9 , 19 , 35 , 47 ], similarity constraint [ 11 , 16 , 29 , 43 , 50 , 51 ] or sidelobe constraint [ 15 , 21 , 22 , 30 , 32 , 33 , 38 , 47 , 50 ]. The constant envelope constraint is more stringent than the PAR constraint because most radar transmitters use nonlinear power amplifiers, which usually work in a saturated state, and the amplitude of the waveform is required to be constant.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Joint Design of Colocated MIMO Radar Constant Envelope Waveform and Receive Filter to Reduce SINR Loss

Huang

Deng

Zheng

et al. 2021

Sensors

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In this paper, we aim at the problem that MIMO radar’s target detection performance is greatly reduced in the complex multi-signal-dependent interferences environment. We propose a joint design method based on semidefinite relaxation (SDR), fractional programming and randomization technique (JD-SFR) and a joint design method based on coordinate descent (JD-CD) to solve the actual transmit waveform and receive filter bank directly to reduce the loss of strong interference to the output signal-to-interference-plus-noise ratio (SINR) of the radar system. Therefore, the maximization of output SINR is taken as the criterion of the optimization problem. The designed waveforms take into account the radar transmitter’s hardware requirements for constant envelope waveforms and impose similarity constraints on the waveforms. JD-SFR uses SDR, fractional programming and randomization technique to deal with the non-convex optimization problems encountered in the solution process. JD-CD transforms the optimization problem into a function of the phase of the waveform and then solves the transmit waveform based on CD. Compared with other methods, the proposed method has lower output SINR loss under strong power interference and forms deep nulls on the direction beampattern of multiple interference sources, which indicates that it has better anti-interference performance.

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