In this context, a differential GPS (DGPS) positioning, carrier phase technology emerged and rapid development.

在此背景下，差分gps (DGPS)定位、载波相位等技术应运而生并飞速发展。

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There are three methods for the determination of the acceleration based on differential GPS carrier-phase technology: position differentiating, velocity differentiating and direct carrier method.

利用GPS差分技术确定载体运动加速度，其方法有三种：位置微分法、速度微分法和加速度直接解算法。

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