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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xing Mengdao Lan Jinqiao Bao Zheng Liao Guisheng |
| Copyright Year | 2004 |
| Description | Author affiliation: Key Lab. for Radar Signal Process., Xidian Univ., Xi'an, China (Xing Mengdao; Lan Jinqiao; Bao Zheng; Liao Guisheng) |
| Abstract | The general approach to ISAR imaging is range-Doppler (RD) imaging approach. For this approach, the translational motion compensation (TMC) is firstly obtained by envelope alignment and autofocus, so the target can be treated as a rotating target for the next processing. But in this method, scatterers' migration through resolution cells (MTRC) caused by rotational motion is neglected. However in practice, MTRC exists with the improvement of resolution or for big target. For MTRC compensation, a keystone transformation in SAR is used in this paper. Before keystone transformation, it is demanded that the raw data is coherent, while in fact, the ISAR raw data is usually not. So a coherent processing of raw data is proposed. In this paper, the coherent processing of raw data is firstly done and the next step is to correct MTRC. Finally a parameter estimation method of multi-component amplitude modulation and linear frequency modulation (AM-LFM) signal is proposed to estimate the scatterers' instantaneous amplitudes and frequencies, and the range-Instantaneous Doppler (RID) ISAR image is obtained. The effective of this algorithm is testified by the processing of simulation data. |
| Sponsorship | Aerosp. and Electron. Syst. Soc |
| Starting Page | 1946 |
| Ending Page | 1960 |
| File Size | 2493558 |
| Page Count | 15 |
| File Format | |
| ISBN | 0780381556 |
| ISSN | 1095323X |
| DOI | 10.1109/AERO.2004.1367978 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-03-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Radar scattering Signal resolution Correlation Laboratories Radar signal processing Motion compensation Chirp modulation Frequency estimation Radar polarimetry Focusing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aerospace Engineering Space and Planetary Science |
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