Application of Fractional Fourier Transform to Moving Target Indication via Along-Track Interferometry
نویسندگان
چکیده
منابع مشابه
Application of Fractional Fourier Transform to Moving Target Indication via Along-Track Interferometry
A relatively unknown yet powerful technique, the so-called fractional Fourier transform (FrFT), is applied to SAR along-track interferometry (SAR-ATI) in order to estimate moving target parameters. By mapping a target’s signal onto a fractional Fourier axis, the FrFT permits a constant-velocity target to be focused in the fractional Fourier domain thereby affording orders of magnitude improveme...
متن کاملMoving Target Detection by Along-Track Interferometry
In this paper we consider the detection of a moving point target using Along-Track (AT) InSAR systems. We consider two cases: conventionally and one bit coded raw data. The performance of the system is evaluated by comparing the probabilities of false alarm and detection.
متن کاملMoving Target Indication via Three-Antenna SAR with Simplified Fractional Fourier Transform
Ground moving target indiction (GMTI) is of great important for surveillance and reconnaissance, but it is not an easy job. One technique is the along-track interferometry (ATI) synthetic aperture radar (SAR), which was initially proposed for estimating the radial velocity of ground moving targets. However, the measured differential phase may be contaminated by overlapping stationary clutter, l...
متن کاملApplication of the Fractional Fourier Transform to Moving Train Imaging
This paper introduces an imaging algorithm with application of fractional Fourier transform (FrFT) for ground moving train imaging by Ku-band ground-based radar. In view of the fact that the train speed is varying when acrossing the radar beam, the multiple Doppler parameters are estimated corresponding to different range positions, i.e., they are estimated from different sections of data in Fr...
متن کاملA comparison of displaced phase centre antenna and along-track interferometry techniques for RADARSAT-2 ground moving target indication
Canada’s RADARSAT-2 commercial synthetic aperture radar (SAR) satellite will have an experimental mode that will permit ground moving target indication (GMTI) measurements to be made. In this mode of operation, the radar antenna is partitioned into two subapertures that sequentially observe the scene of interest from the same point in space. Two of the GMTI processing approaches currently being...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2005
ISSN: 1687-6180
DOI: 10.1155/asp.2005.3293