Cyclic convolution rapid positioning method and device for laser radar ranging

• Main Authors: YANG JUNBO, XIONG WEI, XIA GUANGQIONG, WU YILU, WU ZHENGMAO, HU YUQI, WU JIAGUI
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention provides a cyclic convolution rapid positioning method and device for laser radar ranging, and the method comprises the steps: generating a laser signal through a laser radar device, and obtaining a reference signal and an echo signal based on the laser signal; performing cross-correlation calculation based on cyclic convolution according to the reference signal and the echo signal to obtain a cross-correlation sequence; and a cross-correlation time delay diagram is constructed based on the cross-correlation sequence and a time sequence, the flight time of laser is acquired according to the cross-correlation time delay diagram so as to carry out laser radar ranging, and the time sequence is generated by a preset cross-correlation point number and a sampling frequency. The method can efficiently improve the calculation speed, and improves the laser radar ranging efficiency and accuracy. 本发明提供一种用于激光雷达测距的循环卷积快速定位方法及装置，方法包括：应用激光雷达装置产生激光信号，并基于所述激光信号获取参考信号和回波信号；根据所述参考信号和所述回波信号进行基于循环卷积的互相关计算，得到互相关序列；基于