| 基于加速器控制网的GPS绝对测量精度探讨 |
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| 引用本文： | 马娜,董岚,梁静,向伟,罗涛,王铜,刘璨,柯志勇,何振强.基于加速器控制网的GPS绝对测量精度探讨[J].北京测绘,2014(6):23-27. |
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| 作者姓名： | 马娜 董岚 梁静 向伟 罗涛 王铜 刘璨 柯志勇 何振强 |
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| 作者单位： | 中国科学院高能物理研究所,北京,100049;国家计量科学研究院,广东东莞,510405 |
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| 摘 要： | 针对当前散裂中子源准直测量控制网空间距离大、绝对精度要求高,常规测量难以满足需要的问题,提出采用不受通视限制、高精度的GPS测量解决,通过GPS在“标准检测场”准直实验,计算分析后处理软件、观测仪器及观测时长对GPS绝对测量精度的影响,结果表明,1km的测区范围,商业软件解算结果优于科研软件,且商业软件中TTC解算精度最高;分体机比一体机观测精度更高,但随观测时长增长,二者精度相当;观测时长超过8小时以上,基线值将趋于稳定。
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| 关 键 词： | 准直测量 GPS 基线长度 绝对精度 |
Discussion on Absolute Accuracy of Measurement Based on Accelerator Control Network |
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| Institution: | MA na , DONG Lan , LIANG Jing ,XIANG Wei ,LUO Tao, WANG Tong , LIU Can , KE Zhi-yong , HE Zhen-qiang , ZHU Hong-yan(1. Institute of High Energy Physics Chinese Academy of Sciences, 100049,China; 2. National Institute of Metrology, Dongguan Guangdong 510405, China) |
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| Abstract: | Since the collimation measurement on spallation neutron source requires large spatial distance in control network and high absolute accuracy, tradition measurement can＇t meet the need. GPS measurement is supposed which can＇t be limited by intervisibility and is of high accuracy. Through the experiment in ＇ standard test field＇, influences of processing software, instruments and observing time on GPS absolute measurement are calculated and analyzed. The results show that within lkm, the solution accuracy of business software is better than the one of scientific software and the software TTC is of highest accuracy; observing accuracy of split machine is higher than the one of Integrated machine, and with the observing time growing, the accuracy of the two machines approaches; when the observing time is exceed 8 hour, accura- cy of baseline length will tend to be stable. |
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| Keywords: | alignment measurement GPS baseline length absolute accuracy |
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