Lower Bounds of Moving Target Estimation in Low Frequency SAR

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Mats Pettersson
Title: Lower Bounds of Moving Target Estimation in Low Frequency SAR
Translated title:
Conference name: International Radar Symposium, IRS 2008
Year: 2008
Pagination: 151-155
ISBN: 978-83-7207-757-8
Publisher: IEEE
City: Wroclaw, POLAND
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
Authors e-mail: mtp@bth.se
Language: English
Abstract: Lower bound of moving target estimation, in a multi-antenna channel Ultra Wide Band (UWB) Synthetic Aperture Radar (SAR) system is studied in this work. The main focus is to derive lower bound for systems having a very long integration time associated with position and velocity estimation, which is often connected to low frequency systems. Assuming a flat Earth model we consider the lower bound of the speed components in range and in the cross range direction. The estimation in cross range direction is associated with a considerable integration angle, and therefore the lower bound is determined in connection to a SAR process. It is found that the relative speed influences the covariance matrix of the clutter and therefore also the speed estimate. The influence increases the estimation performance of the relative speed and therefore also the performance of the cross range speed estimation.
Subject: Signal Processing\Beamforming
Signal Processing\Detection and Classification
Signal Processing\Radar and Sonar