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Simulating the Differential Positioning Mode Using One GPS Receiver

机译：使用一个GPS接收器模拟差分定位模式

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This research tends to raise the accuracy of absolute point positioning by simulating the differential positioning mode. This process was done by observing the unknown point using one unit GPS receiver after observing the fixed point with the same receiver and estimate the Doppler value; where it equals to the expected change at carrier phase measurement from two adjacent epochs, to determine the phase value in the following epoch and generate new observation file for the known point has phase observation at the same period of observing the unknown point. The generated data at the known point will be solved with the observed phase data at the unknown point for four satellites at least using triple difference technique to vanish the ambiguity value and all affecting errors on observations. Finally the least square technique will be applying on the resulted equations from the previous process. This method had been enhanced to improve the positioning accuracy from ten meters to 30 cm as a maximum error in 3D coordinates. In condition that there is one fixed point at least in the observation area, and the interval period between observing the fixed and unknown point is less than 15 min.
机译：该研究倾向于通过模拟差分定位模式来提高绝对点定位的精度。该过程是通过在使用同一接收机观测固定点并估算多普勒值之后，使用一个GPS接收机观测未知点来完成的。其中它等于两个相邻历元在载波相位测量时的预期变化，以确定下一个历元的相位值，并为已知点生成新的观测文件，该观测文件在观测未知点的同时具有相位观测。至少使用三重差技术消除歧义值和所有影响观测误差的问题，将利用四颗卫星在未知点处的观测相位数据来求解在已知点处的生成数据。最后，最小二乘技术将应用于先前过程的结果方程。增强了此方法，以将定位精度从10米提高到30 cm，这是3D坐标中的最大误差。在观察区域中至少有一个固定点的情况下，观察固定点和未知点之间的间隔时间小于15分钟。

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