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| Study on Exploring Knowledge of the Clutter Ridge for Clutter Suppression in Heterogeneous Environments |
| Zhou Yu; Zhang Lin-rang; Liu Nan; Liu Xin |
| National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China |
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Abstract Space Time Adaptive Processing (STAP) shows notable performance degradation when secondary data is contaminated by target-like signals or only a small number of secondary data is available. To solve the problem, a new methodology exploring characteristic structure of clutter ridge is proposed to suppress clutter which obscure objects. The phase spectra of ground clutter seen by an airborne radar are taken account of and a covariance matrix is obtained incorporating two-dimension Gaussian power spectral density model. The parameter of the model can be obtained by exploring the sensed environment. Simulation based on simulated data and MCARM real data show that noticeable performance improvements can be obtained with the new approach in heterogeneous environments.
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Received: 21 August 2009
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Corresponding Authors:
Zhou Yu
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2010, Vol. 32 
