| 摘要 |
A method of detection of air, space or submarine targets by reflection of electromagnetic or acoustic waves, comprising performing two successive scanning operations, the scanning operations including a first "search" scanning operation wherein all of the points in a scanned area are rapidly scanned, the points being scanned in the first scan having a relatively high probability of false alarm. The scanning operation includes a second "identification" scanning operation wherein only points which are the true or false targets resulting from the first scan are fixed upon during the second scan, thereby improving the detection reliability of the system.
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