In this article, the models of instantaneous and integral Doppler for one-way and three-way modes are discussed respectively. The two-way Doppler is a special case for the three-way mode. Comparing the differences between the instantaneous and integral Dopplers, the inferred models of integral and instantaneous Doppler, is consentaneous, when the integral period is small enough. The three-way observation model is checked by analyzing the three-way Doppler tracking data of MEX in the period of August, 2009. The location differences are about several hundred meters between the Doppler-based orbit solution of 8 hours arc length (about 1 cycle) and ESA' s reconstructed orbit.%针对深空探测中的多普勒观测资料的单程和三程模式,分别给出了瞬时和积分的观测模型,双程多普勒观测模型是三程模式的一个特殊情况.通过比较瞬时和积分多普勒的差异,推断在积分周期取得足够小时,瞬时观测模型与积分模型是一致的.利用2009年8月份对火星探测器MEX的三程多普勒测轨资料的处理,检验了三程多普勒资料观测模型的正确性,利用约一个圈次8小时三程多普勒数据进行轨道计算,定轨结果与欧空局重建轨道位置差约几百米.
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