BeiDou 3 signal quality analysis and its impact on users

Thoelert, Steffen; Antreich, Felix; Enneking, Christoph; Meurer, Michael

doi:10.1002/navi.331

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…The main contribution of this study is proposing a whole-process emergency solution to support 5G and test its performance in practical application scenarios. (1) A plan for sharing emergency information among multiple medical institutions using 5G and BeiDou Navigation Satellite 27 , 28 is proposed, reflecting the value of 5G in emergency response and security. (2) A rapid sharing application scenario of emergency field information based on 5G and AR smart wearable devices is proposed, freeing doctors and improving pre-hospital emergency communication efficiency.…”

Section: Introductionmentioning

confidence: 99%

Method and application of information sharing throughout the emergency rescue process based on 5G and AR wearable devices

Wang

Jiang

Jia

et al. 2023

Sci Rep

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The 2022 Winter Olympics were held in the three competition zones of Beijing, Yanqing and Zhangjiakou, China. The venues of this Winter Olympics were scattered and the terrain was complex. Moreover, the medical resources of Hebei and Beijing were relatively unbalanced. In the medical security of major events, the connection between first aid and in-hospital processes is of the utmost importance to rescue quality. 5th generation mobile network (5G) applications in medical scenarios are on the rise. It would be of great relevance to fully use 5G’s low-latency and high-speed features to share the process information of patients, ambulance personnel, and the destination hospital’s rescue team at emergency scenes and in transportation, improving rescue efficiency. This paper proposes a system scheme of cross-institutional emergency health information sharing based on 5G and augmented reality wearable devices. It also integrates the construction method of monitoring and other sign data sharing, in addition to testing the proposed scheme’s service quality in 5G environments. In the deployment area of the 5G emergency medical rescue information sharing scheme for the Beijing Winter Olympic Games, we selected two designated medical support institutions for testing. The test adopted a combination of fixed-point and driving tests to experiment on the service data, voice service, and streaming media indicators. The 5G signal's coverage rate was close to 100%, the standalone connection's success rate was 100%, and the drop rate was 0. The average downlink rate of multiple scenarios was 620mbps, and the average uplink rate of 5G was over 71.8mbps, which is higher than the average 5G level in China. The downlink rate was more than 20 times larger than the 4th generation mobile network (4G) rate. This study’s proposed scheme demonstrates the importance of 5G applications in emergency response and support, in addition to providing a suitable scheme for the integration of 5G networks in the medical scene.

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Section: Introductionmentioning

confidence: 99%

Method and application of information sharing throughout the emergency rescue process based on 5G and AR wearable devices

Wang

Jiang

Jia

et al. 2023

Sci Rep

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Research on the Index System of BDS-3 Signal Quality Evaluating Methods Based on High-Gain Observations

He,

Liu,

Guo

et al. 2023

Lecture Notes in Electrical Engineering

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GLONASS-K2 signal analysis

Thoelert,

Steigenberger,

Montenbruck

2024

GPS Solut

Self Cite

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K2 is a new generation of GLONASS satellites that provides code division multiple access (CDMA) signals in the L1, L2 and L3 frequency bands in addition to legacy L1 and L2 signals based on frequency division multiple access (FDMA) modulation. The first GLONASS-K2 satellite was launched in August 2023 and started signal transmission in early September 2023. Based on measurements with a 30-m high-gain antenna, spectral characteristics of the various signal components are described and relative power levels are identified. A 3 dB (L1) to 4 dB (L2) higher total power is determined for the CDMA signal compared to the legacy FDMA signal and an equal power of the open service and secured CDMA signal components is found. The ranging code of the L2 channel for service information, which has not been publicly disclosed so far, is identified as a Gold code sequence consistent with the data channel of the L1 open service CDMA signal. The high-gain antenna measurements are complemented by tracking data from terrestrial receivers that enable a first assessment of user performance. An up to 50% improvement in terms of noise and multipath performance is demonstrated for the new L1 and L2 CDMA signals in comparison with their legacy counterpart, but no obvious differences between the different binary phase-shift keying and binary offset carrier modulations of the data and pilot components of these signals could be identified for the test stations. Triple-frequency carrier phase observations from L1, L2, and L3 CDMA signals exhibit good consistency at the noise and multipath level, except for small variations that can be attributed to slightly different antenna phase patterns on the individual frequencies. Overall, the new CDMA signals are expected to notably improve and facilitate precise point positioning applications once fully deployed across the GLONASS constellation.

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BeiDou 3 signal quality analysis and its impact on users

Cited by 5 publications

References 7 publications

Method and application of information sharing throughout the emergency rescue process based on 5G and AR wearable devices

Method and application of information sharing throughout the emergency rescue process based on 5G and AR wearable devices

Research on the Index System of BDS-3 Signal Quality Evaluating Methods Based on High-Gain Observations

GLONASS-K2 signal analysis

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