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| On Detection of Number of Tomography SAR Signals in the Elevation Direction Using the FB-MAPES Method |
| Ren Xiao-zhen①②; Yang Ru-liang① |
| ①Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;②Graduate University of the Chinese Academy of Sciences, Beijing 100190, China |
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Abstract When using Tomography SAR combined with spatial spectrum estimation to solve layover effect, the number of signals should be estimated in the elevation direction first. The accuracy of number of signals is directly related to the following estimation performance. The conventional Information Theoretic Criteria (ITC) methods are usually influenced by multiplicative noise of the data, consequently, the performance of the estimation decreases. In this paper, a new method, FB-MAPES, is proposed to detect the number of signals. Then the performance of General Minimum Descriplion Length (GMDL) and FB-MAPES is compared via the Monte Carlo simulation. The experimental results confirm the validity of the FB-MAPES method. Moreover, the proposed method is prior to conventional ITC in detecting the number of tomography SAR signals in the elevation direction.
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Received: 03 June 2008
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2009, Vol. 31 
