基于Delta-Sigma调制的多频相位激光测距  

Multi-frequency Phase Laser Ranging based on Delta-Sigma Modulation

作　　者：左金鑫 张大卫 聂俊缘 熊良明 梅坤 王晋祺 姜倩文 ZUO Jin-xin;ZHANG Da-wei;NIE Jun-yuan;XIONG Liang-ming;MEI Kun;WANG Jin-qi;JIANG Qian-wen(State Key Laboratory of Optical Fiber and Cable Manufacturing Technology,Wuhan 430073,China;School of Electronic Information and Communication,Huazhong University of Science and Technology,Wuhan 430074,China;Shanghai Radio Equipment Research Institute,Shanghai 200082,China)

机构地区：[1]光纤光缆制备技术国家重点实验室,武汉430073 [2]华中科技大学电子信息与通信学院,武汉430074 [3]上海无线电设备研究所,上海200082

出　　处：《光通信研究》2022年第1期1-5,44,共6页Study on Optical Communications

基　　金：光纤光缆制备技术国家重点实验室(长飞公司)开放课题基金资助项目(SKLD1807)。

摘　　要：为解决激光卫星终端在完成通信功能的同时,也能够实现测距功能的问题,文章设计了基于Delta-Sigma调制方式实现的激光相位测距,可以实现通信与测距一体化,采用多频点相位测距兼顾测距范围与测距精度。多频点调制信号都是使用基于Delta-Sigma调制的高速数字输入输出(I/O)端口生成的,而不采用任何数模转换器(DAC)。基于Delta-Sigma调制方式,用于多频相位测距的多频点可以同时产生,优于传统的每个单频点分别产生的方法。选取187.50 MHz的高频和1.50 MHz的低频测尺,可实现测距范围为100 m以内并且测距精度达到1 mm的测距要求。In order to solve the problem that the laser satellite terminal can realize the ranging function while completing the communication function,this paper designs a method based on the Delta-Sigma modulation to realize the laser phase ranging,which can integrate the functions of communication and ranging.Multi-frequency point phase ranging is used to balance ranging range and ranging accuracy.Multi-frequency modulation signals are generated using high-speed digital Input and Output(I/O)ports based on Delta-Sigma modulation without any Digital-to-Analog Converter(DAC).Based on the Delta-Sigma modulation method,multiple frequency points for multi-frequency phase ranging can be generated at the same time,which is better than the traditional method of generating each single frequency point separately.Selecting the high frequency of 187.50 MHz and the low frequency of 1.50 MHz,the ranging accuracy can achieve 1 mm in the range of less than 100 m.

关 键 词：激光相位测距 DELTA-SIGMA 输入输出端口 数模转换器 

分 类 号：TN929.1[电子电信—通信与信息系统]