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声光技术在电子对抗应用中最成功的是频谱分析和相关运算。声光频谱分析器的突出优点是其瞬时带宽很大,因而即使对采用载频跳变技术的雷达系统漏检率也几乎等于零。声光相关器的突出优点是相关增益高。声光相关器可分为空间积分和时间积分两大类。波传播具有时间和空间坐标两个变量,空间积分是用透镜将不同空间坐标处的光聚焦于同一光电接收器上而完成,系统的有限光孔径限制了积分区间因而只能得到近似的相关运算,而相关
Acousto-optic technology is the most successful in the electronic countermeasures spectrum analysis and related operations. The salient advantage of the acousto-optic spectrum analyzer is its large instantaneous bandwidth, so that even radar systems with carrier frequency hopping miss detection rates are almost equal to zero. The prominent advantage of the acousto-optic correlator is the high relative gain. Acousto-optic correlator can be divided into space and time integral integral two categories. The wave propagation has two variables of time and space coordinates. The space integral is achieved by focusing the light at different spatial coordinates on the same photoelectric receiver with the lens. The limited light aperture of the system limits the integral interval and thus can only obtain the approximate correlation operation And related