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Attitude determination with GPS: experimental results

机译：用GPS确定姿态：实验结果

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摘要

An approach to global positioning system (GPS) attitude determination and the results of an experimental evaluation are presented. The most outstanding features of the method are the fundamental observable used for attitude calculation, the triple difference, and the introduction of a new parameter, the differential dilution of precision (DDOP), which relates the GPS satellite geometry to the GPS accuracy when measuring angular magnitudes. The experiment used two commercial off-the-shelf GPS C/A code receivers delivering integrated Doppler measurements. The algorithm is robust with respect to phase cycle slips and does not require solving the usual integer ambiguity of the measurements. The preliminary results show that absolute attitude determination requires a calibration of the baseline and that the relative attitude accuracy is on the order of 0.1 degrees or 2 mrads for the case of a 2-m-long baseline.
机译：提出了一种全球定位系统（GPS）姿态确定方法和实验评估结果。该方法最突出的特点是可用于姿态计算的基本可观测值，三重差以及引入新参数“精度微分稀释（DDOP）”，该参数将GPS卫星几何形状与测量角度时的GPS精度相关联数量级。该实验使用了两个商用的现成GPS C / A码接收器，它们提供了集成的多普勒测量。该算法相对于相位周期滑移是鲁棒的，不需要解决通常的整数模糊度测量问题。初步结果表明，绝对姿态确定需要对基线进行校准，并且对于2 m长的基线，相对姿态精度约为0.1度或2毫拉德。

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