研究目的
To develop a new range sidelobe suppression technique that adaptively shapes target spectral response to reduce the processing loss, especially for weak targets, thereby improving detection sensitivity of radar systems employing LFM waveforms.
研究成果
The proposed adaptive spectral shaping technique effectively reduces processing loss for weak targets, improving detection sensitivity with less than twice the computational complexity of conventional methods. Performance gains were verified through both simulated and real data analyses.
研究不足
The technique's performance is dependent on the accurate grouping of target spectral responses by Doppler shifts and the selection of appropriate spectral windows for each group.
1：Experimental Design and Method Selection:
The study involves the development of an adaptive spectral shaping technique applied after matched filtering and Doppler processing to control range sidelobes of target returns.
2：Sample Selection and Data Sources:
Simulated and real data from an OTH radar system were used to evaluate the technique.
3：List of Experimental Equipment and Materials:
An LFMCW signal with specific parameters was used in simulations, and real data from the Jindalee Operational Radar Network (JORN) were analyzed.
4：Experimental Procedures and Operational Workflow:
The technique involves separating target spectral responses into groups based on Doppler shifts and applying different spectral windows to each group.
5：Data Analysis Methods:
Performance was assessed by comparing output SNR and resolution improvements between the proposed adaptive technique and conventional non-adaptive methods.
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