Employing iterative methods in synthetic aperture radar to clarify target and image.

Document Type : Original Article

Authors

1 PhD student, Sharif University of Technology, Tehran, Iran

2 Professor, Sharif University of Technology, Tehran, Iran

Abstract

Synthetic Impulse and Aperture Radar (SIAR) is a kind of Multiple Input Multiple Output (MIMO) radar. Like the other type or radars, angle estimation is a problem in SIAR too. The general way in all cases of MIMO radars of finding the direction of arrival (DOA) of any wave, is to using the matched filter search in the angle domain and report the peaks of the matched filter as DOA of targets. But in the low angle scenario, there are two targets too close to each other in elevation angle, one of them the direct reflection and the another one from the earth below the target. Inn this scenario, using the matched filter search does not work and would just report a single target with false angle.

In order to solve this problem in convectional phased array radars, many super resolution methods has been introduced in recent years. Here we would present the new method of angle resolvation of two target in SIAR case which is the special method in MIMO radars category and then its performance would be compared with other angle estimation methods.

Keywords


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Volume 10, Issue 2 - Serial Number 28
Number 28, Autumn and Winter Quarterly
January 2023
  • Receive Date: 24 October 2022
  • Revise Date: 14 December 2022
  • Accept Date: 31 December 2022
  • Publish Date: 21 January 2023