Abstract
We have been developed an algorithm of radar image reconstruction which can be applied to an arbitrarily arranged antenna array. The algorithm is based on a model fitting by nonlinear least-squares. In the present paper, this algorithm is extended to treat a case where the medium has simple inhomogeneity. Reconstruction is executed on the assumption that targets consist of discrete point scatterers embedded in a medium composed of two layers with different permittivity. The algorithm of the model fitting including the initial guess for the fitting is described. Non-linear least-squares fits the theoretical waveform calculated by FDTD method to the observed waveform, and determines the parameters of the targets and the medium. The proposed algorithm estimates the position of targets more accurately than the conventional algorithm which assumes homogeneity of the medium.
| Original language | English |
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| Title of host publication | International Geoscience and Remote Sensing Symposium (IGARSS)|Dig Int Geosci Remote Sens Symp (IGARSS) |
| Editors | Sadao Fujimura |
| Place of Publication | Piscataway, NJ, United States |
| Publisher | IEEE |
| Pages | 286-288 |
| Number of pages | 2 |
| Volume | 1 |
| ISBN (Print) | 0780312406 |
| Publication status | Published - 1993 |
| Event | Proceedings of the 13th Annual International Geoscience and Remote Sensing Symposium IGARSS'93 - Tokyo, Jpn Duration: 1 Jul 1993 → … |
Conference
| Conference | Proceedings of the 13th Annual International Geoscience and Remote Sensing Symposium IGARSS'93 |
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| City | Tokyo, Jpn |
| Period | 1/07/93 → … |