差分磁罗盘与速率陀螺组合航向系统设计

基金项目:

国家自然科学基金项目 79870032

Heading measure system of differential digital magnetic compass and gyro

School of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Article Text (Baidu Translation)

摘要: 提出了差分磁罗盘概念, 分析了其用于动态罗差识别时的可行性。以C8051F005为核心, 组建了方案验证所需的差分磁罗盘与速率陀螺实验系统。实验结果表明, 在识别率大于50%, 错误率小于15%前提下, 动态罗差识别精度为8~10, 说明差分磁罗盘能有效提高系统对动态罗差的识别率与在组合系统数据融合算法中磁罗盘测量信息的可信度。
- 交通信息工程 /
- 差分磁罗盘 /
- 角速率陀螺 /
- 航向测量 /
- 误差补偿
Abstract: This paper defined DDMC (differential digital magnetic compass), built up this system based on C8051F005, introduced its software and hardware design, discussed its communication circuit. The identification precision of the system is 8°~10°, while identification rate is above 50%, error is below 15%. The test results indicate that DDMC can raise the identification rate for dynamic compass error, and settle magnetic compass reliability in the assembled system.
- traffic information engineering /
- DDMC /
- gyro /
- heading measure /
- error compensation

图 1 通讯电路

Figure 1. Communication circuit

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图 2 信号输出时间序列

Figure 2. Output signal time serial

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图 3 系统软件整体工作流程

Figure 3. Entire work flow of systematic software

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图 4 罗差与Δm_i、ΔRh的分布特性

Figure 4. Distribution character of Δm_i, compass error and ΔRh

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表 1 分析结果

Table 1. Analysis result

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