研究目的
To propose an algorithm for the detection and joint estimation of target parameters (range, Doppler, and direction of arrival) for a radar with a two-element rotating antenna, while compensating for the effects of antenna rotation.
研究成果
The proposed algorithm effectively detects targets and jointly estimates their range, Doppler, and DOA while compensating for the Doppler shift induced by antenna rotation. The algorithm's performance is verified through simulations, showing close alignment with theoretical bounds (CRLB). The computational complexity is analyzed, indicating suitability for real-time implementation.
研究不足
The algorithm is limited to two-element antenna arrays, which restricts the resolution and the ability to discriminate multiple targets based solely on DOA. The accuracy of Doppler frequency estimation depends on the number of pulses stacked.
1：Experimental Design and Method Selection:
The algorithm involves processing data from two rotating antenna elements to detect targets and estimate their parameters. It includes compensation for Doppler shifts caused by antenna rotation.
2：Sample Selection and Data Sources:
Simulated radar data with specified target parameters (range, Doppler, and DOA) and noise levels.
3：List of Experimental Equipment and Materials:
Two-element rotating antenna, radar signal processing algorithms, simulation software.
4：Experimental Procedures and Operational Workflow:
Stacking received pulses, performing FFT for Doppler estimation, compensating for antenna rotation Doppler, correlating with reference barker sequence for range estimation, and using phase difference for DOA estimation.
5：Data Analysis Methods:
Comparison of estimated parameters with actual values, analysis of detection performance using ROC curves, and comparison of estimation accuracy with CRLB.
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