Research on keystone formatting based on non-baseband interpolation |
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Authors: | Yufei Cao Xiaoguang Qu Peikang Huang |
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Affiliation: | 1. Beijing Institute of Radio Measurement, Beijing 100039, P. R. China 2. Defense Technology Academy of China Aerospace Science & Industry Corporation, Beijing 100039, P. R. China |
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Abstract: | When there is Doppler ambiguity number mutation, keystone formatting is no longer valid because of integration performance deterioration and false velocity estimation. A novel keystone formatting method based on non baseband interpolation is presented. It has a different half blind velocity range comparing with normal keystone formatting. Furthermore, there is non-superposition between half-blind-velocity-range of keystone formatting based on baseband and that of non-baseband interpolation. So a synthesizing keystone formatting is proposed to avoid the half-blind-velocity effect. Simulation results of the proposed method show that integration deterioration and velocity estimation falsity can be eliminated effectively. |
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Keywords: | keystone formatting half-blind-velocity coherent integration velocity estimation |
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