中海达QminiA1手持GPS接收机精度提高方法与实现

Hi-Target QminiA1 Hand-held GPS Receiver Accuracy Improvement Method and Implementation

手持GPS作为一种实时、快速的定位导航设备已经逐渐应用于各个行业中,但精度不高一直以来都是限制其推广的一个重要因素。本文分析了手持GPS接收机的误差来源,并针对中海达QminiA1手持机,通过采用逐点差分法、取平均值法、多项式曲线拟合法进行定位精度试验。试验表明:使用逐点差分方法能有效提高手持GPS定位精度,用取平均值法能减少偶然误差影响,处理后可使点位误差保持在3.6 m以下;使用多项式曲线拟合法可将各个点的定位精度提高9 m以上。

Hand-held GPS as a real-time,fast-positioning navigation device has been gradually used in various industries,but the accuracy is not high has always been an important factor limiting its promotion.This article analyzes the sources of error in hand-held GPS receivers,and uses the point-by-point difference method,average value method,and polynomial curve fitting method to greatly improve the positioning accuracy of the Haida QminiA1 handheld used.The following conclusions are drawn:The point-by-point difference method can effectively improve the accuracy of hand-held GPS positioning,and the averaging error method can reduce the impact of accidental errors.After processing,the point error can be kept below 3.6 m;the use of polynomial curve fitting method can be used to The positioning accuracy of the point is improved by more than 9 m.