Sensors, Vol. 19, Pages 3961: MIMO Radar Accurate 3-D Imaging and Motion Parameter Estimation for Target with Complex Motions

Sensors, Vol. 19, Pages 3961: MIMO Radar Accurate 3-D Imaging and Motion Parameter Estimation for Target with Complex Motions
Sensors doi: 10.3390/s19183961
Authors:
Ziying Hu
Wei Wang
Fuwang Dong
Ping Huang

In this paper, three-dimensional (3-D) multiple-input multiple-output (MIMO) radar accurate localization and imaging method with motion parameter estimation is proposed for targets with complex motions. To characterize the target accurately, a multi-dimensional signal model is established including the parameters on target 3-D position, translation velocity, and rotating angular velocity. For simplicity, the signal model is transformed into three-joint two-dimensional (2-D) parametric models by analyzing the motion characteristics. Then a gridless method based on atomic norm optimization is proposed to improve precision and simultaneously avoid basis mismatch in traditional compressive sensing (CS) techniques. Once the covariance matrix is obtained by solving the corresponding semi-definite program (SDP), estimating signal parameters via rotational invariance techniques (ESPRIT) can be used to estimate the positions, then motion parameters can be obtained by Least Square (LS) method, accordingly. Afterwards, pairing correction is carried out to remove registration errors by setting judgment conditions according to resolution performance analysis, to improve the accuracy. In this way, high-precision imaging can be realized without a spectral search process, a...

Source: Sensors - September 12, 2019 Category: Biotechnology Authors: Ziying Hu Wei Wang Fuwang Dong Ping Huang Tags: Article Source Type: research