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GNSS Multireceiver Vector Tracking

机译：GNSS多接收机矢量跟踪

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摘要

Accurate, reliable, and robust global positioning system (GPS) localization is desirable for many navigation applications. Unfortunately, it is challenging for a single GPS receiver to always provide accurate positioning solutions. In urban environments, intermittent signal availability leads to degraded GPS signal tracking and position estimation of the single GPS receiver. In addition, equipment malfunction of the single GPS receiver results in inaccurate navigation solutions. This paper presents a deeply coupled multireceiver vector tracking (MRVT) architecture that improves the reliability and robustness of GPS signal tracking and position estimation. MRVT jointly tracks GPS signals received by multiple GPS receivers, mitigating GPS signal tracking disruptions, improving the reliability of GPS localization in periods of intermittent signal availability. In addition, the MRVT receiver is more robust to equipment malfunctions than the single GPS receiver. We implemented an MRVT receiver using commercial radio frequency front ends and our PyGNSS software. We experimentally validated the reliability of our MRVT receiver in periods of intermittent GPS availability experienced in downtown San Francisco. Our MRVT receiver exhibited consistent GPS signal tracking and position estimation as compared to vector tracking. In addition, we experimentally validated the robustness of our MRVT receiver to the failure of a single GPS receiver.
机译：对于许多导航应用来说，准确，可靠和强大的全球定位系统（GPS）定位是理想的。不幸的是，单个GPS接收机始终提供准确的定位解决方案是一项挑战。在城市环境中，间歇性的信号可用性会导致GPS信号跟踪和单个GPS接收器的位置估计下降。此外，单个GPS接收器的设备故障会导致导航解决方案不准确。本文提出了一种深度耦合的多接收机矢量跟踪（MRVT）架构，该架构提高了GPS信号跟踪和位置估计的可靠性和鲁棒性。 MRVT联合跟踪多个GPS接收器接收到的GPS信号，从而减轻GPS信号跟踪中断，提高了间歇信号可用性期间GPS定位的可靠性。另外，MRVT接收器比单个GPS接收器对设备故障的耐受性更高。我们使用商业射频前端和我们的PyGNSS软件实现了MRVT接收器。在旧金山市区经历GPS间歇性使用期间，我们通过实验验证了MRVT接收机的可靠性。与矢量跟踪相比，我们的MRVT接收机展现出一致的GPS信号跟踪和位置估计。此外，我们通过实验验证了MRVT接收器对单个GPS接收器故障的鲁棒性。

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