2008, Volume 10, Issue 10
Strategic Study of CAE >> 2008, Volume 10, Issue 10
Research on Prony’s method modeling in multi-target detection of stepped-frequency radar
1. Institute of Near Sensing Technique with Millimeter Wave and Optical Wave, Nanjing University of Science and Technology, Nanjing 210094, China;
2. School of Electronics Information, Hangzhou Dianzi University, Hangzhou 310037, China
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Abstract
Stepped-frequency signal is a broad band signal which enhances range resolution of radar at the cost of increasing bandwidth. Baseband signal that is received in stepped-frequency radar can be thought of as the linear combination of exponential function which contains target information, while Prony algorithm is a mathematical mode which uses a linear combination of exponential function to describe equal space between sampling data. Extended Prony algorithm is applied to stepped-frequency radar, which can obtain more exact target information and overcome the shortcomings of using IDFT to synthesize high resolution range profiles. Corresponding modeling analysis and experiment simulation explain the advantages of Prony's method.
Keywords
high resolution radar ; stepped-frequency signal ; extended Prony’s method ; multi-scattering center
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