Evaluation of Positioning Performance using the GPS + QZSS in Shanghai
Evaluation of Positioning Performance using the GPS + QZSS in Shanghai
复制标题
上海GPS QZSS定位性能评估
DOI:
10.2322/tjsass.57.1
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发表时间:
2014-01
期刊:
影响因子:
--
通讯作者:
Akio Yasuda
中科院分区:
文献类型:
--
作者:
Yun Zhang;Yongming Liu;Zhonghua Hong;ChunMing Fan;Akio Yasuda
The Global Position System (GPS) may have poor performance in metropolitan areas where there is a terrible blocking effect for satellite signals. A different positioning system combination will increase the number of visible satellites and enhance the strength of the satellite geometry. The Japanese Aerospace Exploration Agency (JAXA) confirmed that the first quasi-zenith satellite (QZS) ‘‘MICHIBIKI’’ began providing positioning signals on June 22, 2011 (JST). The QZS system (QZSS) can provide compatible signals and has a better interoperability with GPS. Therefore, we used integration of the two systems to verify the changes in positioning performance. To demonstrate the positioning accuracy of the proposed methods, evaluations of the positioning performance using only the GPS system and the GPSþ QZSS system are conducted using real observation data in Shanghai. Three indicators are used to evaluate the positioning performance: the number of visible satellites (NVS), position dilution of precision (PDOP), and root mean square (RMS). Meanwhile, the results show that GPS augmentation using the QZSS improves the positioning performance for high elevation mask angles. Positioning availability increases more than 30% at 45 degrees, and by as much as 64% on day 3. The performance is more stable using the GPSþ QZSS.
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影响因子:
3.6
作者:
M. Kayton
通讯作者:
M. Kayton
DOI:
--
发表时间:
2007-01
期刊:
--
影响因子:
--
作者:
T. Sakai;S. Fukushima;N. Takeichi;Ken Ito
通讯作者:
T. Sakai;S. Fukushima;N. Takeichi;Ken Ito
DOI:
10.1109/taes.2004.1386878
发表时间:
2004-10
影响因子:
4.4
作者:
Falin Wu;N. Kubo;Akio Yasuda
通讯作者:
Falin Wu;N. Kubo;Akio Yasuda
DOI:
--
发表时间:
2009
期刊:
--
影响因子:
--
作者:
T. Takasu;T. Ebinuma;A. Yasuda
通讯作者:
T. Takasu;T. Ebinuma;A. Yasuda
DOI:
10.9749/jin.112.219
发表时间:
2005-03
期刊:
The Journal of Japan Institute of Navigation
影响因子:
--
作者:
信明 久保;明生 安田
通讯作者:
信明 久保;明生 安田