Approximate Invariance of the Inverse of the Covariance Matrix and the Resultant Pre-Built STAP Processor

Abstract

Space-time adaptive processing (STAP) has been proven to be optimum in scenarios where an airborne phased-array radar is used to search for moving targets. The STAP requires the inverse of the covariance matrix (ICM) of undesired signals. The computation of the real-time ICM is impractical at current computer speeds. Proposing two Theorems, this report indicates that the ICM is approximately invariant if radar and platform parameters remain unchanged. A pre-built STAP (PSTAP) processor is then proposed. Both the simulated data from a generic airborne phased array radar model and real data collected by the multi-channel airborne radar measurement (MCARM) system are processed to verify the processor. Results indicate that the performance of the proposed PSTAP processor is the same as that of the real-time STAP processor.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2005
Accession Number
ADA434589

Entities

People

  • Yunhan Dong

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Electronic Warfare
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Airborne Early Warning
  • Bandwidth
  • Computations
  • Data Sets
  • Electrical Engineering
  • Electronic Warfare
  • Engineering
  • Frequency
  • Moving Targets
  • Phased Array Radar
  • Phased Arrays
  • Radar
  • Simulations
  • Steering
  • Systems Science
  • Warfare

Readers

  • Radar Systems Engineering.

Technology Areas

  • Space