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Power Allocation in Inter-Satellite Ranging Measurement of Navigation Constellation

机译:导航星座卫星间测距中的功率分配

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The performance of the global navigation satellite system (GNSS) can be enhanced significantly by introducing inter-satellite ranging (ISR). Due to the satellite battery resource constraints, energy-saving is a critical issue for ISR. This paper presents an approach of power allocation in ISR of navigation constellation. Because of the high precision space-time reference of GNSS, the satellite transmitter can recognize the channel dynamic parameters of ISR by means of the navigation message. Based on the dynamic information, the optimal power allocation can be calculated to guarantee the given quality of service (QoS) of ISR before the ranging is established. This paper presents the recognition process of dynamic parameters and derives the closed form expression for the optimal power allocation. Furthermore, the real GPS orbit data is used to evaluate this method. Theoretical analysis and simulation results show that the total energy consumption can be reduced significantly.
机译:通过引入卫星间测距(ISR),可以大大提高全球导航卫星系统(GNSS)的性能。由于卫星电池资源的限制,节能是ISR的关键问题。本文提出了一种导航星座ISR中的功率分配方法。由于GNSS的高精度时空参考,卫星发射机可以通过导航消息识别ISR的信道动态参数。基于动态信息,可以在建立测距之前计算最佳功率分配,以确保ISR的给定服务质量(QoS)。本文介绍了动态参数的识别过程,并得出了最优功率分配的闭式表达式。此外,真实的GPS轨道数据用于评估该方法。理论分析和仿真结果表明,可以显着降低总能耗。

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