【摘要】 本文将伪随机码扩频技术应用于超声多目标无损检测中，提山了多路并列相关解扩多目标分离原理，分析了多目标检测中的干扰以及抗干扰方法。扩额超声无损检测可以获得极高的分辨力和测距精度，可以获得极低的相关旁瓣，甚至于将相关旁瓣抑制到0dB，从而实现多目标有效检测，这是一种有广泛应用前景的技术。更多还原

【Abstract】 In this Paper the PN code spread spectrum technology has been used in bo multiple target dethection and tha multipletargot splitting theory Using multiple parallel correlaton despread is Proposed and methods of anti-interretrence in multiple target detectionare analyzed. Ulatic muitiple target detection using PN code Spread petrum technology can obtain a high resolution and ranging accuracy, and a low co - correlation value, even 0dB, can be obtained.更多还原