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Title: SAR impulse response with residual chirps.

Abstract

A Linear Frequency-Modulated (LFM) chirp is a function with unit amplitude and quadratic phase characteristic. In a focused Synthetic Aperture Radar (SAR) image, a residual chirp is undesired for targets of interest, as it coarsens the manifested resolution. However, for undesired spurious signals, a residual chirp is often advantageous because it spreads the energy and thereby diminishes its peak value. In either case, a good understanding of the effects of a residual LFM chirp on a SAR Impulse Response (IPR) is required to facilitate system analysis and design. This report presents an analysis of the effects of a residual chirp on the IPR. As reference, there is a rich body of publications on various aspects of LFM chirps. A quick search reveals a plethora of articles, going back to the early 1950s. We mention here purely as trivia one of the earlier analysis papers on this waveform by Klauder, et al.

Authors:
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
959092
Report Number(s):
SAND2009-2957
TRN: US201016%%34
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; RADAR; RESPONSE FUNCTIONS; IMAGES; AMPLITUDES; WAVE FORMS; FREQUENCY MODULATION; Synthetic Aperture Radar.; Impulse.-Measurement

Citation Formats

Doerry, Armin Walter. SAR impulse response with residual chirps.. United States: N. p., 2009. Web. doi:10.2172/959092.
Doerry, Armin Walter. SAR impulse response with residual chirps.. United States. doi:10.2172/959092.
Doerry, Armin Walter. Mon . "SAR impulse response with residual chirps.". United States. doi:10.2172/959092. https://www.osti.gov/servlets/purl/959092.
@article{osti_959092,
title = {SAR impulse response with residual chirps.},
author = {Doerry, Armin Walter},
abstractNote = {A Linear Frequency-Modulated (LFM) chirp is a function with unit amplitude and quadratic phase characteristic. In a focused Synthetic Aperture Radar (SAR) image, a residual chirp is undesired for targets of interest, as it coarsens the manifested resolution. However, for undesired spurious signals, a residual chirp is often advantageous because it spreads the energy and thereby diminishes its peak value. In either case, a good understanding of the effects of a residual LFM chirp on a SAR Impulse Response (IPR) is required to facilitate system analysis and design. This report presents an analysis of the effects of a residual chirp on the IPR. As reference, there is a rich body of publications on various aspects of LFM chirps. A quick search reveals a plethora of articles, going back to the early 1950s. We mention here purely as trivia one of the earlier analysis papers on this waveform by Klauder, et al.},
doi = {10.2172/959092},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 2009},
month = {Mon Jun 01 00:00:00 EDT 2009}
}

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