论文部分内容阅读
随着科技的发展,卫星导航定位已成为不可缺少的重要组成部分,其中又以长码直捕最为关键。导航长码直接捕获、跟踪的关键是确定起始捕获时刻,起始时刻越精确,捕获时间越短,捕获过程越简易,保证实时钟芯片高精度指标对于提高导航长码直捕性能有着重要的意义。要保证实时钟芯片能够适应移动终端环境温度变化范围大、温度变化快,而且又要应对芯片和晶体存在的个体差异,量产时需要对每一个实时钟芯片进行全温区的调试和检测,工作量极大,因此设计了全自动的调测系统,实现实时钟芯片量产过程的自动化。
With the development of science and technology, satellite navigation and positioning have become an indispensable and important part of them. Among them, the most important thing is the direct capture by long code. Navigation Long code direct capture, tracking the key is to determine the initial capture time, the more accurate start time, the shorter the capture time, the easier the capture process to ensure that real-time clock chip high-precision index for improving long-range navigation capture is important significance. To ensure that the real-time clock chip can adapt to the mobile terminal environment temperature range, temperature changes quickly, but also to deal with the individual differences between chips and crystals, mass production, the need for real-time clock chip for all temperature zone debugging and testing, Due to the heavy workload, a fully automated commissioning system is designed to automate the real-time clock chip production process.