MTI radar stability measurement error

Abstract

The stability of MTI radar measured as the ratio of power of test signal residue in the target filter to power of the test signal in the clutter filter does not necessarily correspond to the actual system stability over the range of test signal-to-noise ratios. The stability measurement algorithm should be based on the signal-to-noise ratio for which both figures match each other (that in the general case depends on the number of pulses and set of coefficients used to create a canceler or Doppler filter bank) or a correction coefficient should be introduced to account for possible discrepancy between measured and actual stability figures.