一、引言多点定位法是一种新的定位方法,它的定位精度如何,是人们十分关心的问题。影响多点定位精度的因素较多,其中最主要的是高斯噪声,即所谓的白噪声,如接收光电元件的热噪声,放大器的噪声、供电电源的波动、空间各种电磁波的干扰等。本文旨在找出多点定位误差与信噪比的关系,提出减小定位误差的一些方法,最后对多点定位方法与单点定位方法作一个比较。 I. INTRODUCTION The multi-point positioning method is a new positioning method, and its positioning accuracy is a problem that people are very concerned about. Many factors affect the accuracy of multi-point positioning, of which the most important is the Gaussian noise, the so-called white noise, such as receiving thermal noise of optoelectronic components, amplifier noise, power supply fluctuations, various electromagnetic interference in space. This paper aims to find out the relationship between multi-point positioning error and signal-to-noise ratio and propose some methods to reduce the positioning error. Finally, a comparison is made between multi-point positioning method and single point positioning method.