Accession Number:

ADA422432

Title:

Space-Time Adaptive FIR Filtering with Staggered PRI

Descriptive Note:

Conference paper

Corporate Author:

RESEARCH ESTABLISHMENT FOR APPLIED SCIENCES WACHTBERG-WERTHHOVEN (GERMANY)

Personal Author(s):

Report Date:

2001-03-14

Pagination or Media Count:

7.0

Abstract:

Space-time least squares far infrared radiation FIR filters have shown excellent clutter rejection performance at extremely low computational loads, allowing ground moving target indication GMTI to be carried out in real-time. Staggering the pulse repetition interval PRI is an appropriate way of avoiding Doppler ambiguities and blind velocities. Fully adaptive space-time processors can cope well with staggered echo data. FIR filtering techniques are based on constant PRI and, therefore, will suffer some degradation if the radar pulses are staggered. This paper presents the concept of re-adaptation of the FIR filter coefficients at each PRI. It is shown by simulations that the total loss caused by staggering the PRI is of the order of magnitude of a few dB. However, applying a constant FIR filter to staggered data results in dramatic losses in signal-to-clutter plus noise ratio. 8 figures, 11 refs.

Subject Categories:

  • Numerical Mathematics
  • Active and Passive Radar Detection and Equipment
  • Target Direction, Range and Position Finding

Distribution Statement:

APPROVED FOR PUBLIC RELEASE