NDLI: Preliminary results from an airborne experiment using along-track interferometry for ground moving target indication

Content Provider	IEEE Xplore Digital Library
Author	Chapin, E. Chen, C.W.
Copyright Year	2005
Description	Author affiliation: Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA (Chapin, E.; Chen, C.W.)
Abstract	Synthetic aperture radar (SAR) along track interferometry (ATI) has been used extensively to measure ocean surface currents. Given its ability to measure small velocities (/spl sim/10 cm/s) of relatively radar-dark water surfaces, there is great potential that this technique can be adapted for ground moving target indication (GMTI) applications, particularly as a method for detecting very slow targets with small radar cross sections. In this paper we describe preliminary results from an ATI GMTI experiment. The SAR data described here were collected by the dual-frequency NASA/JPL airborne radar in its standard dual-baseline ATI mode. The radar system imaged a variety of control targets including a pickup truck, sport utility vehicles, passenger cars, a bicycle, and pedestrians over multiple flight passes. The control targets had horizontal velocities of less than 5 m/s. The cross sections of the targets were not purposely enhanced, although the targets' reflectivities may have been affected by the existence of the GPS equipment used to record the targets' positions. Single-look and multiple-look interferograms processed to the full azimuth resolution were analyzed. In the data processed to date, all of the targets were observed by visual inspection in at least one of the four combinations of dual-frequency, dual-baseline interferometric data. This extremely promising result demonstrates the potential of ATI for GMTI applications.
Sponsorship	Nat. Capital Area Council IEEE Aerospace and Electron. Syst. Soc. RADAR Syst. Panel
Starting Page	343
Ending Page	347
File Size	869494
Page Count	5
File Format	PDF
ISBN	078038881X
DOI	10.1109/RADAR.2005.1435848
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interferometry Synthetic aperture radar Sea measurements Sea surface Radar cross section Radar tracking Target tracking Current measurement Oceans Velocity measurement
Content Type	Text
Resource Type	Article

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