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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhang, Dandan Qiu, Xiaolan Hu, Donghui Lv, Xiaolei Huang, Lijia Ding, Chibiao |
| Abstract | Ground moving target indication based on geosynchronous (GEO) satellite-airborne (SA) bistatic radar can keep a certain area under continuous surveillance, and thus has important military application values. However, a channel error will affect the clutter suppression performance of the bistatic multi-channel moving target indication radar. And it is found that the channel calibration algorithm used in the long sequence monostatic side-looking synthetic aperture radar, is not applicable to the long sequence translational variant bistatic radar. An improved subspace-based channel calibration algorithm is proposed in this study to deal with channel errors of the GEO SA bistatic multi-channel radar. The algorithm utilises the clutter as calibrated sources, and estimates channel error parameters by minimising the projections of the calibrated sources onto the noise subspace. As the channel errors are estimated from the data, the proposed algorithm does not need any extra calibration sources. Also, the proposed algorithm does not have the limitation of the traditional array self-calibration algorithms, which may have non-unique estimations under the condition of linear arrays. Besides, it avoids finding the inversion of large-size matrix and calculating with any iteration, and hence it is efficient. Moreover, the proposed algorithm can estimate channel errors that vary with azimuth. Simulations are performed to validate the proposed algorithm. |
| Starting Page | 1008 |
| Ending Page | 1017 |
| Page Count | 10 |
| ISSN | 17518784 |
| Volume Number | 8 |
| e-ISSN | 17518792 |
| Issue Number | Issue 9, Dec (2014) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/8/9 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2013.0325 |
| Journal | IET Radar, Sonar & Navigation |
| Publisher Date | 2014-03-31 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Airborne Radar Array Signal Processing Artificial Satellites Bistatic Multichannel Moving Target Indication Radar Calibration Channel Error Parameter Estimation Channel Estimation Clutter Suppression Performance Communication Channel Equalisation And Identification Continuous Surveillance Electromagnetic Compatibility Error Statistics GEO SA Bistatic Multichannel Radar Geosynchronous Satellite Airborne Bistatic Multichannel Radar Ground Moving Target Indication Ground Penetrating Radar Interference Interference Suppression Interpolation And Function Approximation Iteration Method Iterative Method Linear Algebra Linear Array Matrix Inversion Military Application Value Minimisation Noise SubSpace Nonunique Estimation Numerical Analysis Optimisation Technique Projections Minimisation Radar Clutter Radar Equipment Satellite Communication System Search Radar Signal Processing And Detection Statistics SubSpace-based Channel Calibration Algorithm Synthetic Aperture Radar System And Application Translational Variant Bistatic Radar |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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