基于虚拟仪器的双GPS测距系统设计

针对高精度无线电测距的需求,设计了一种基于虚拟仪器的低成本、可存储、无线传输的双GPS接收系统;该系统采用SDT11模块接收GPS信号,利用扩频通信技术实现数据的远距离收发,通过专用软件完成距离信息的解算;实现了测量距离不小于7km、测距精度不大于15m的远距离实时测距,解决了远距离条件下高精度实时测距的难题;相对于同类测距产品具有传输距离远、精度高、成本低、实时性强、受天气干扰影响小的优点,具有广阔的市场前景。

Design of Double-GPS Ranging System Based on Virtual Instrument Technology

Because of the needs of high precision radio ranging system,the article designs a low-cost,stored,wireless transmitting GPS reception system based on the virtual instrument technology,the system uses the SDT11 to receive the GPS’s signal,it can deliver the data for long distance by enlarging the frequency,and use the special software to get the distance information.The system can test the distance longer the 7km,precision smaller the 15m,it solve the problem of high precision in long distance testing.According to the other ranging system,the Double-GPS Ranging System have the advantage of long distance,high precision,low cost,good timing,low interfering by the weather,so the system has amplitude market foreground.