This paper analyzed the modulation and filter technique on joint power spectrum(JPS), which reduced the intensity and width of the strong dc component existing in the classical joint transform correlator, improved the recognition ability greatly.

• 针对联合变换相关器，分析了对联合功率谱的调制和滤波技术，缩小了峰值半宽度、削弱了零级自相关的能量，改善了经典联合变换相关器识别性能。