| 摘要 |
Method for reducing false target echo indications in a pulse Doppler radar having at least two different pulse repetition frequencies during the period in which the main beam of the radar illuminates a target. A target which is detected gives rise to a number of primary detections in each PRF. The method includes use of at least one variable criterion and a final criterion, which are both of the M/N type. The factor M in the variable criterion is initially greater than the factor M in the final criterion. The method also includes the feature that primary detections which are all to be found in the same range gate in a number of PRF's, which number is equal to the factor M in the variable criterion, are approved as targets in this range gate. If the factor M in the variable criterion and the final criterion are not equal, the approved primary detections and all other primary detections corresponding thereto, are removed from further processing, and if the factor M in the variable and the other criterion are not equal, a predetermined number is subtracted from the factor M in the variable criterion. |
