亚太地区多星座全球导航卫星系统的信号分析,International Journal of Satellite Communications and Networking

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亚太地区多星座全球导航卫星系统的信号分析
International Journal of Satellite Communications and Networking ( IF 0.9 ) Pub Date : 2020-12-16 , DOI: 10.1002/sat.1389
Kutubuddin Ansari ₁ , Tae‐Suk Bae ₁ , Hong‐Woo Seok ₂ , Min‐Seo Kim ₁

Affiliation

通过选择亚太地区的10个MGEX网络站，我们研究了五个多星座系统（GPS，GLONASS，伽利略，北斗和QZSS）信号。仔细比较卫星可见性（NSV）数量，信噪比（SNR），多径组合（MPC）和精确点定位（PPP）（包括不同星座的相位和代码残差（PCR））的比较分析调查以衡量个人表现。通过小波分析，在代表仰角的地图上提取SNR数据。分析表明，尽管小波的数量与卫星的可见频率相对应，但仰角与SNR的相关系数随不同的卫星轨道而变化。我们通过使用功率谱检查了MPC，并验证了多径签名的频率成分。结果表明，与GPS和GLONASS信号相比，北斗和QZSS星座信号受到的影响更大，与伽利略信号相比，受到的影响较小。我们绘制了相对于时间和仰角的来自不同卫星系统的PCR。可以看出，与GPS和GLONASS残差相比，QZSS残差表现出最大值，而Galileo和BeiDou残差值略小。我们绘制了相对于时间和仰角的来自不同卫星系统的PCR。可以看出，与GPS和GLONASS残差相比，QZSS残差表现出最大值，而Galileo和BeiDou残差值略小。我们绘制了相对于时间和仰角的来自不同卫星系统的PCR。可以看出，与GPS和GLONASS残差相比，QZSS残差表现出最大值，而Galileo和BeiDou残差值略小。

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Multiconstellation global navigation satellite systems signal analysis over the Asia‐Pacific region

We studied five multiconstellation systems (GPS, GLONASS, Galileo, BeiDou, and QZSS) signals by selecting 10 MGEX network stations over the Asia‐Pacific region. A comparative analysis with the number of satellite visibilities (NSVs), signal‐to‐noise ratio (SNR), multipath combination (MPC), and precise point positioning (PPP) including the phase and code residuals (PCRs) of different constellations is carefully investigated to measure the individual performances. The SNR data were extracted on a map representing the elevation angle via wavelet analysis. The analysis indicated that the correlation coefficient of elevation angle with the SNR varies for different satellite orbits, although the number of wavelets corresponded to the visible frequency of satellites. We examined the MPC by using the power spectrum and verified the frequency component of the multipath signature. The results show that the BeiDou and QZSS constellations signals were significantly more affected compared with the GPS and GLONASS signals and less affected compared to the Galileo signal. We plotted PCR from different satellites systems relative to time and elevation angles. It was observed that the QZSS residuals exhibited the largest values, and the Galileo and BeiDou residual values were slightly smaller values compared with the GPS and GLONASS residuals.

更新日期：2020-12-16

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