Overview of the Technology of Low Altitude Warning Based on Acoustic Detection

It is very important for the existing warning system to detect low altitude target with acoustic detection due to the blindness of the traditional radar detection. Electronic devices are used in acoustic detection to receive the threat target’s sound wave in order to obtain the target’s attributes such as coordinates, tracks and categories. Comparing with the traditional warning technology, the warning technology based on acoustic detection has the features of not being to get found easily, to be affected by visibility when being armed. It is especially suitable to defense against the low altitude threat target. Being one of the most popular warning technology, the warning technologies based on acoustic detection has its unique advantages in the field of localization, recognition and other areas, and has attracted more and more attention of the military departments of all countries. In this paper, the warning technology based on acoustic detection is introduced briefly, including basic theory, development history, application in military and shortages. In addition, the localization algorithm with fiveelement cross array and the theory on acoustic target recognition are discussed in detail, and its utilization prospects are pointed out finally.