利用多频多系统GNSS OEM板卡实现高精度变形监测
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摘要
针对近年来被广泛应用的多频多系统GNSS OEM板卡,设计并实现了一套基于多频多系统OEM板卡的低成本变形监测系统,包括数据解码、基线处理、网平差和坐标转换等,能够实时获取测站点高精度空间坐标。以某高层建筑形变监测为例,通过串口通信获取板卡多频多系统观测信息,并经过该系统解算,实现了监测点实时定位,且系统成本相比市场上测量型GNSS接收机系统下降了约40%。实验结果表明,该系统解码精度可达0.2 mm,静态模式定位精度可达到平面2 mm以内,高程5 mm以内,动态模式定位精度可达到平面5 mm以内,高程10 mm以内,验证了该系统的可靠性和适用性。
A set of low cost deformation monitoring system is designed and implemented, including data decoding, baseline solution, network adjustment and coordinate transformation, etc., which can get the high-precision spatial coordinates of measuring stations in real time. Taking the deformation monitoring of a high-rise building as an example, the real-time position of the site is located by this system. Besides, the cost of the whole system can be decreased by about 40% compared with the measuring GNSS receiver system in the market. The experimental results show that the decoding accuracy can reach 0.2 mm, the plane precision of static positioning model is within 2 mm, and elevation precision is within 5 mm, while the dynamic positioning model is better than 5 mm for the horizontal component, better than 10 mm for the vertical component, which verifies the reliability and applicability of the system.
A set of low cost deformation monitoring system is designed and implemented, including data decoding, baseline solution, network adjustment and coordinate transformation, etc., which can get the high-precision spatial coordinates of measuring stations in real time. Taking the deformation monitoring of a high-rise building as an example, the real-time position of the site is located by this system. Besides, the cost of the whole system can be decreased by about 40% compared with the measuring GNSS receiver system in the market. The experimental results show that the decoding accuracy can reach 0.2 mm, the plane precision of static positioning model is within 2 mm, and elevation precision is within 5 mm, while the dynamic positioning model is better than 5 mm for the horizontal component, better than 10 mm for the vertical component, which verifies the reliability and applicability of the system.
引文
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[2] 徐堃,刘经南,李静年,等.智能型GPS接收机初探[J].测绘通报,2003(8):25-28
[3] 魏绒绒,代桃高,李建文.基于GNSS OEM板的数据采集及解码实现[J].大地测量与地球动力学,2017,37(10):1 079-1 082
[4] 孟祥广,郭际明.GPS接收机(OEM)二进制文件向RINEX文件的转换[J].测绘工程,2009,18(5):18-21
[5] Unicore Communications Inc.UB380 Commands and Logs Reference Manual[R].Unicore Communications Inc,Beijing,2015
[6] 姜卫平,刘鸿飞,刘万科,等.西龙池上水库GPS变形监测系统研究及实现[J].武汉大学学报·信息科学版,2012,37(8):949-952
[7] 蒋萍花,张楠.数据采集系统串口通信的设计与实现[J].电子测量技术,2015,38(6):139-142.
[8] Gurtner W.RINEX:The Receiver Independent Exchange Format Version2.11[R].Astronomical Institute of the University of Bern,Switzerland,2007
[9] Gurtner W.RINEX:The Receiver Independent Exchange Format Version 3.02[R].Astronomical Institute of the University of Bern,Switzerland,2013
[10] Gurtner W.RINEX:The Receiver Independent Exchange Format Version 3.03[R].Astronomical Institute of the University of Bern,Switzerland,2015
[11] 陈健,岳东杰,赵兴旺,等.BDS/GPS组合单历元基线解算方法[J].测绘科学技术学报,2017,34(3):232-235
[12] 元荣.BDS/GPS基线算法研究及软件开发[D].北京:清华大学,2014
[13] 汪亮,李子申,袁洪,等.BDS/GPS/GLONASS组合的双频单历元相对定位性能对比分析[J].科学通报,2015,60(9):857-868
[14] He H B,Li J L,Yang Y X,et al.Performance assessment of Single-and Dual-Frequency BeiDou/GPS Single-Epoch Kinematic Positioning[J].GPS Solution,2014,18(3):393-403
[15] 李杰,张晋涛.高精度GNSS基线向量网平差程序设计[J].测绘地理信息,2014,39(3):15-18
[16] 周江文.经典误差理论与抗差估计[J].测绘学报,1989,18(2):115-120
[17] 姚佩超,杨志强.地质灾害实时监测与预警系统的设计与实现[J].测绘通报,2016(S2):124-129
[18] 陈西强,黄张裕.抗差估计的选权迭代法分析与比较[J].测绘工程,2010,19(4):8-11
[19] 朱静然,潘树国.GNSS原始数据解码为RINEX标准数据格式及数据质量分析[J].现代测绘,2014,37(4):8-10
[20] 张晨艳,何秀凤,贾东振.瀑布沟水电站移民新城变形监测与预测分析[J].测绘科学技术学报,2012,29(6):422-426
[21] 于晓东,吕志伟,王兵浩,等.DGNSS数据传输格式RTCM3.2的介绍及解码研究[J].全球定位系统,2015,40(3):37-41