CAJ | 학술논문

为解决APD面阵激光雷达多路激光飞行时间测量这一关键技术,研制了多通道高精度并行时间间隔测量系统。系统硬件由研制的4个基本测量单元和1个数据打包单元组成,系统软件采用事件驱动模式编程,利用循环FIFO和中断技术实现与上位机数据通信。被研发的测时系统应用于5×5光纤阵列耦合APD面阵激光雷达试验后,面阵激光雷达所有25个通道最大的距离标准偏差为4.22 cm,测距偏差为-6.41 cm~10.58 cm,达到面阵激光雷达测距精度要求。
위해결APD면진격광뢰체다로격광비행시간측량저일관건기술,연제료다통도고정도병행시간간격측량계통。계통경건유연제적4개기본측량단원화1개수거타포단원조성,계통연건채용사건구동모식편정,이용순배FIFO화중단기술실현여상위궤수거통신。피연발적측시계통응용우5×5광섬진렬우합APD면진격광뢰체시험후,면진격광뢰체소유25개통도최대적거리표준편차위4.22 cm,측거편차위-6.41 cm~10.58 cm,체도면진격광뢰체측거정도요구。
Time interval measuring system with multi-channel and high precision is designed and implemented, which is applied to solve a critical technology of multi-beam laser flight time measuring for APD array LiDAR. The hardware system consists of one data packing unit and four basic measurement units. Software programming adopts event driven mode,and utilizes circular FIFO and interrupt technology to accomplish data communication. The inter-val measuring system is used on 5×5 APD LiDAR with fiber coupling,the ranging precision meets requirements of array LiDAR,ranging deviation by converting from time is -6.41 cm~10.58 cm and the maximum ranging standard deviation is 4.22 cm in all 25 channels.