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Title: Spaceborne SAR study: LDRD 92 final report. [Synthetic Aperture Radar (SAR)]

Abstract

This is the final report for a study performed for the 1992 LDRD spaceborne SAR (Synthetic Aperture Radar) study. This report presents an overview of some of the issues that must be considered for design and implementation of a SAR on a spaceborne platform. The issues addressed in this report include: a survey of past, present, and future spaceborne SARs; pulse-repetition frequency (PRF); general image processing issues; transmitter power requirements; the ionosphere; antennas; two case studies; and an appendix with a simplified presentation on geometry and orbits.

Authors:
;  [1];  [2]
  1. (Sandia National Labs., Albuquerque, NM (United States))
  2. (Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.)
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6561501
Report Number(s):
SAND-93-0731
ON: DE93011485
DOE Contract Number:
AC04-76DP00789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 42 ENGINEERING; SYNTHETIC-APERTURE RADAR; DESIGN; ANTENNAS; GEOMETRY; INFORMATION; ORBITS; POWER TRANSMISSION; PROGRESS REPORT; SATELLITES; SPACE; SPECIFICATIONS; TELEMETRY; WAVE PROPAGATION; COMMUNICATIONS; DATA TRANSMISSION; DOCUMENT TYPES; ELECTRICAL EQUIPMENT; EQUIPMENT; MATHEMATICS; MEASURING INSTRUMENTS; RADAR; RANGE FINDERS; 450000* - Military Technology, Weaponry, & National Defense; 426000 - Engineering- Components, Electron Devices & Circuits- (1990-)

Citation Formats

Bickel, D.L., Brock, B.C., and Allen, C.T.. Spaceborne SAR study: LDRD 92 final report. [Synthetic Aperture Radar (SAR)]. United States: N. p., 1993. Web.
Bickel, D.L., Brock, B.C., & Allen, C.T.. Spaceborne SAR study: LDRD 92 final report. [Synthetic Aperture Radar (SAR)]. United States.
Bickel, D.L., Brock, B.C., and Allen, C.T.. 1993. "Spaceborne SAR study: LDRD 92 final report. [Synthetic Aperture Radar (SAR)]". United States. doi:.
@article{osti_6561501,
title = {Spaceborne SAR study: LDRD 92 final report. [Synthetic Aperture Radar (SAR)]},
author = {Bickel, D.L. and Brock, B.C. and Allen, C.T.},
abstractNote = {This is the final report for a study performed for the 1992 LDRD spaceborne SAR (Synthetic Aperture Radar) study. This report presents an overview of some of the issues that must be considered for design and implementation of a SAR on a spaceborne platform. The issues addressed in this report include: a survey of past, present, and future spaceborne SARs; pulse-repetition frequency (PRF); general image processing issues; transmitter power requirements; the ionosphere; antennas; two case studies; and an appendix with a simplified presentation on geometry and orbits.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1993,
month = 3
}

Technical Report:
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  • This is the final report for a study performed for the 1992 LDRD spaceborne SAR (Synthetic Aperture Radar) study. This report presents an overview of some of the issues that must be considered for design and implementation of a SAR on a spaceborne platform. The issues addressed in this report include: a survey of past, present, and future spaceborne SARs; pulse-repetition frequency (PRF); general image processing issues; transmitter power requirements; the ionosphere; antennas; two case studies; and an appendix with a simplified presentation on geometry and orbits.
  • This report provides a detailed evaluation of synthetic aperture radar (SAR) as a potential technology improvement over the Coast Guard's existing side-looking airborne radar (SLAR) for oil-spill surveillance applications. The U.S. Coast Guard Research and Development Center (RD Center), Environmental Safety Branch, sponsored a joint experiment including the U.S. Coast Guard, Sandia National Laboratories, and the National Oceanographic and Atmospheric Administration (NOAA), Hazardous Materials Division. Radar imaging missions were flown on six days over the coastal waters off Santa Barbara, CA, where there are constant natural seeps of oil. Both the Coast Guard SLAR and the Sandia National Laboratories SARmore » were employed to acquire simultaneous images of oil slicks and other natural sea surface features that impact oil-spill interpretation. Surface truth and other environmental data were also recorded during the experiment. The experiment data were processed at Sandia National Laboratories and delivered to the RD Center on a PC-based computer workstation for analysis by experiment participants. Synthetic aperture radar, Side looking airborne radar, Oil slicks.« less
  • The concept developed under this applied research and development contract is a novel Ground Penetrating Radar system capable of remotely detecting, analyzing, and mapping buried waste containers from a mobile platform. From the testing and analysis performed to date, the 3-D SISAR has achieved the detection, accurate location, and three-dimensional imaging of buried test objects from a stand-off geometry. Tests have demonstrated that underground objects have been located to within 0.1 meter of their actual position. This work validates that the key elements of the approach are performing as anticipated. The stand-off synthetic aperture radar (SAR) methodology has been demonstratedmore » to be a feasible approach as a remote sensing technique. The radar sensor constructed under this project is providing adequate quality data for imaging, and the matched filters have been demonstrated to provide enhanced target detection. Additional work is on-going in the area of underground propagation and scattering phenomena to provide enhanced depth performance, as the current imaging results have been limited to a few feet of depth underground.« less
  • The linear ground distance per unit time and ground area covered per unit time of producing synthetic aperture radar (SAR) imagery, termed rate of advance (ROA) and area coverage rate (ACR), are important metrics for platform and radar performance in surveillance applications. These metrics depend on many parameters of a SAR system such as wavelength, aircraft velocity, resolution, antenna beamwidth, imaging mode, and geometry. Often the effects of these parameters on rate of advance and area coverage rate are non-linear. This report addresses the impact of different parameter spaces as they relate to rate of advance and area coverage ratemore » performance.« less