由国营向阳仪器厂、北京工业学院、中国科学院光电技术研究所联合研制的我国第一台红外数字经纬仪已经诞生了。这种仪器是运用光机电三结合的相位式测距原理,综合采用了激光测距、光电编码测角和小型电子计算机解算等先进技术,能够自动测量距离的一种新型仪器。 The first infrared digital theodolite in China, which was jointly developed by State-owned Xiangyang Instrument Factory, Beijing Institute of Technology and Institute of Optics and Electronics, Chinese Academy of Sciences, was born. This instrument is the use of optical three-phase combination of phase-based ranging principle, the integrated use of laser ranging, optical encoder angle measurement and small computer solutions and other advanced technology, can automatically measure the distance of a new type of instrument.