| GNSS差分协议校验方法的比较 |
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| 引用本文： | 申丽丽,郭际明,王磊,向巍. GNSS差分协议校验方法的比较[J]. 地理空间信息, 2011, 9(1): 82-84 |
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| 作者姓名： | 申丽丽 郭际明 王磊 向巍 |
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| 作者单位： | 武汉大学测绘学院; |
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| 基金项目： | 国家863计划资助项目(2008AA127308) |
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| 摘 要： | 详细的比较了4种常见的差分协议所用到的校验方法的异同,其中RTCM2.3采用的是奇偶校验的方法,RTCM3.0采用的是循环冗余检验方法,而CMR和CMR+采用的则是数据块之和模256这样的方法.通过算例以及理论分析,从校验方法的编码效率、容错率等方面对其进行比较分析.
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| 关 键 词： | RTCM CMR 奇偶校验 循环冗余校验 |
Comparison of Parity Algorithms for Differential GNSS Data Transmission Standards |
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| Shen Lili. Comparison of Parity Algorithms for Differential GNSS Data Transmission Standards[J]. Geospatial Information, 2011, 9(1): 82-84 |
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| Authors: | Shen Lili |
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| Abstract: | This paper compared the differences in the 4 common standard's parity algorithm.RTCM2.3 took the Parity Check as parity algorithm,and RTCM3.0 took the QualComm CRC algorithm as parity algorithm,while CMR and CMRPlus used the sum of data blocks to mode 256 as parity algorithm.The author analyzed parity algorithms from coding efficiency and fault-tolerance efficiency by examples and theory analysis. |
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| Keywords: | RTCM CMR parity check qualcomm CRC algorithm |
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