前言在近代工业、軍事工程、大地測量和科学技术的发展过程中,对由几米、几十米直到几百米大尺寸的精密測量,往往要求精度达到百万分之一或更高。为了适应这方面的需要,近十余年来国外出現了一种精密測距的新仪器——无綫电干涉仪(也有人称作微波干涉仪)。 INTRODUCTION In modern industry, military engineering, geodesy and the development of science and technology, precise measurements of large dimensions from a few meters to tens of meters up to several hundred meters often require accuracies of up to one part per million or more. In order to meet the needs in this respect, a new instrument of precision ranging has appeared abroad for more than ten years - radio interferometer (also called microwave interferometer).