着重研究了适合于北斗动态对动态定位的精度测试方法，包括基线长度约束检测法、动态瞬时精度检测法、借助GrafNav软件比较法，以及实时与事后比较法等，并通过实例数据进行了分析和验证。结果表明，精度检测方法可靠有效，能够满足动动定位的精度检测需求。

The methods for testing the precision of Beidou dynamic-dynamic positioning are studied,including baseline length constraint test method,dynamic-instantaneous precision test method,GrafNav software comparison method,real-time and post comparison method and etc.Analysis and verification are made to these methods by using practical data collected in experiments.The result shows that the precision test method has high reliability and effectiveness,which can meet the precision demands of dynamic-dynamic positioning.