Digital Simulation of a Synthetic Aperture Radar.

Abstract

To evaluate a synthetic aperture radar being designed for the SEASAT-A satellite a digital simulation was undertaken. A system operating in spotlight mode with step-chirp pulse compression was modeled. A bottleneck analysis of the software led to an economical implementation of this model. The ocean scattering model used assumed Rayleigh statistics. Ocean surface models representing chaotic seas and deterministic patterns, such at sea ice and oil slicks, were viewed by the radar. The effects of single-bit quantization of the signal, data thinning by random deletion of the signal, and coherent breakup of the image were investigated. Analytic models of image degradation owing to single-bit processing and image spectral distortion that is due to coherent breakup were developed and found to be consistent with the results of the simulation.

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1975
Accession Number
ADA011831

Entities

People

  • A. D. Goldfinger

Organizations

  • Johns Hopkins University Applied Physics Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Compression
  • Degradation
  • Distortion
  • Ice
  • Pulse Compression
  • Radar
  • Scattering
  • Sea Ice
  • Simulations
  • Statistics
  • Synthetic Aperture Radar

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Computer Vision.
  • Optical Physics and Photonics.

Technology Areas

  • Space