CAJ | 학술논문

针对远距离脉冲激光测距中微弱信号的提取，提出了一种多脉冲互相关的叠加方法，即对某时间段内的脉冲回波信号进行互相关叠加，利用噪声的不相关性，达到增加信号的强度，以提高信噪比，降低误警率。通过对不同距离的测量目标进行回波信号提取试验证明，多脉冲互相关累积法可以将原来不足300 m的探测距离提高到1000 m以上，大大提高了脉冲激光的测程。
침대원거리맥충격광측거중미약신호적제취，제출료일충다맥충호상관적첩가방법，즉대모시간단내적맥충회파신호진행호상관첩가，이용조성적불상관성，체도증가신호적강도，이제고신조비，강저오경솔。통과대불동거리적측량목표진행회파신호제취시험증명，다맥충호상관루적법가이장원래불족300 m적탐측거리제고도1000 m이상，대대제고료맥충격광적측정。
In view of the weak signal extraction in pulse laser ranging over a long distance,a multiple pulse superposi-tion of cross-correlation method has been proposed.A certain period of time pulse echo signal is in cross-correlation func-tion,using the irrelevance of noise to increase the intensity of the signal,improve the signal-to-noise ratio and reduce the false alarm rate.Through the different distance measuring target echo signal extraction experiments,multiple pulse cross-correlation accumulation method can increase the detection range of the original less than 300 meters to 1 000 meters,greatly improving the measurement of the pulse laser.