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首页> 外文会议>Proceedings of the 22nd international technical meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2009) >Enhancing GNSS Acquisition by Combining Signals from Multiple Channels and Satellites
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Enhancing GNSS Acquisition by Combining Signals from Multiple Channels and Satellites

机译：通过组合来自多个频道和卫星的信号来增强GNSS的采集

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摘要

This paper describes the improvements to acquisition that can be gained by combining signals in terms of the theoretical reduction in C/N_0 acquisition for given probability of false alarm and missed detection.The growth in number of channels available from each GNSS satellite and the number of satellite transmitters affords the opportunity for enhancements to the acquisition process.Existing techniques improve acquisition of weak signals through longer integration times and provision of satellite information from an aiding source.Examples of this collective detection approach are shown for live and simulated satellites over a range of input C/N_0 values. Combining satellites and channels from a single satellite can improve the acquisition sensitivity for a given signal integration time or reduce the amount of time to acquire signals at a given input power level.
机译：本文描述了在给定的误报和漏检概率下，通过组合信号可以在理论上减少C / N_0捕获方面获得的改进。每个GNSS卫星可用信道数量的增长卫星发射机为增强捕获过程提供了机会。现有技术通过更长的积分时间和从辅助源提供卫星信息来改善对微弱信号的捕获。输入C / N_0值。将单个卫星的卫星和信道组合在一起可以提高给定信号积分时间的采集灵敏度，或者减少在给定输入功率水平下采集信号的时间量。

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