Gps Terminal Network Design And Implementation Of The Comprehensive Performance Testing System

There is a huge kirmess in which only the high performance GPS service providers could survive.In China, traditional industry of GPS is worked as small workshops.The markets of GPS services were needed regularly. Through advanced- technologies we could build up a series of technology-norms which could impove production abilityies and foster an efficient market in which all of us could enjoy the benefits.Based on this, we needed some standard methods to measure GPS equipments.In this paper, we designed test system of GPS user-terminal-equipments which has the abilities of auto-testing and auto-evaluating.Firstly, this dissertation introduces every parts of whole system, includes test methods, test flowing and test instruments.Then, it emphatically presents the main control software, such as the design of software architecture structure, programable GPIB instruments, multithread control and synchronize.