Missing radar pulse clutter processing

The degradation incurred with a conventionally weighted moving target indication (MTI) or Doppler filter radar when one of the return pulses is missing is investigated. It is shown that, for conventional MTI and Doppler filter bank processor, the loss in performance can be large. For the single filter, such as an MTI filter, it is shown that the eigenvector methods for determining the weighting can result in large losses. However, the minimax log energy (MMLE) method is shown to give nearly optimal performance. It is shown that, using the MMLE design procedure, the number of filters could be substantially reduced without incurring a large degradation in performance