Multi-antenna snapshot receiver
2019 European Navigation Conference (ENC)(2019)
摘要
A global navigation satellite system (GNSS) snap-shot receiver records a segment of data and then sends it to a server for processing. The server then sends information, regarding the position and time for the receiver, back. This technology enables low-power positioning and can also be used for remote processing of encrypted signals. A multi-antenna receiver benefits from increased spatial diversity, as beamforming and nullsteering can be implemented. Both these technologies improve receiver robustness against interferences, multi-path effects and spoofing. A snapshot receiver with a six-element antenna array is presented. Data is captured with a multi-channel recorder, from which snapshots are extracted and processed. GNSS acquisition algorithms which use the channels coherently, incoherently, and a mixture of both (first estimate the steering-weights and then to combine coherently), are evaluated and will be presented. The results are compared to a single channel snapshot, which has an equal snapshot data-size. Results show that with small snapshots, a single channel has superior performance. However, with larger snapshots similar performance is achieved, as what is theoretically expected.
更多查看译文
关键词
Global navigation satellite system (GNSS),beamforming,server based processing,antenna array
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要