車載及船載場(chǎng)景PPP-B2b動(dòng)態(tài)定位性能分析

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Assessment of PPP-B2b kinematic positioning performance

undervehicle andvessel scenarios

XIE Xiaofeng'，ZHANG Yuanfan2* ，WANG Zhenjie2，DU Jun3 （1. National Earthquake Response Support Service，Beijing 100049，China; 2. Colege of Oceanography and Space Informatics，China University of Petroleum （East China），Qingdao 266580， China; 3.Qingdao Shihua Crude Oil Terminal，Qingdao 26650o，China）

Abstract：The assessment of PPP-B2b kinematic positioning performance under diferent scenarios willbe animportant referenceforusersandcontribute totheexpansionof theapplication scopeand promotionof BDS-3.Inthis study，the kinematic positioning performance ofthePPP-B2b service of BDS-3under diffrent scenarios was comprehensively analyzed byperformingonevehicle experiment andonevessel experiment.Experimental results indicate that using the

post-procesing product released by the Helmholtz Centre Potsdam-German Research Centre for Geosciences（GFZ）as a reference，the PP-B2b product had orbit correction accuracy upto the decimeter level and clock corrction accuracy up to the sub-meter level.In the vehicle experiment of PPP-B2b，multipath-rot mean square （MP-RMS）for BDS-3 B1/B2 frequencies was 41.3cm ，while that for GPS L1/L2 frequencies was 52.2cm . The positioning accuracies of BDS-3 in the horizontal and vertical directions were 10.3 and 10.5cm and those of the BDS- 3+6PS combination were 5.6 and 4.9cm ， respectively. In the vessel experiment of PPP-B2b，the MP-RMS for BDS-3 B1/B2 frequencies was 52.5cm ，while that for GPS L1/L2 frequencies was 70.4cm .The accuracy values of BDS-3 in the horizontal and vertical directions were 22.5 and 12.0cm and those of the BD 15-3+GPS combination were 9.7 and 5.1cm ，respectively.The overall impact of multipath effcts nthekinematicpositioningperformanceof PPP-B2bin the vessel environment was slightly greater than that in the vehicle environment.

Key words ： precise point positioning； BeiDou-3 navigation satelite system； PPP-B2b service

全球衛(wèi)星導(dǎo)航系統(tǒng)（global navigation satelite system，GNSS）精密單點(diǎn)定位（precise point positioning，PPP）技術(shù)由于只需要單臺(tái)接收機(jī)即可實(shí)現(xiàn)分米級(jí)至厘米級(jí)精度的高精度定位，已成為社會(huì)生活和生產(chǎn)中最為普及的高精度定位技術(shù)[1]。（剩余13492字）