| VLBI相关处理器动态条纹拟合方法 |
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| 引用本文： | 曾富华.VLBI相关处理器动态条纹拟合方法[J].四川兵工学报,2014(8):119-121. |
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| 作者姓名： | 曾富华 |
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| 作者单位： | 中国电科第十研究所,成都610036 |
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| 摘 要： | 甚长基线干涉测量(VLBI)是重要的超远距离飞行器测角技术,具有极高的空间分辨率。相关处理是VLBI系统的重要组成部分,通过分析模型补偿后残留条纹误差的特征及其对长期积累算法的影响,建立了残留延迟的状态转移模型,设计了基于卡尔曼滤波的改进算法进行残留延迟率估计。对卡尔曼滤波的收敛速度及估计精度进行了分析。仿真实验表明,通过利用尔曼滤波算法对延迟率的拟合处理,相关处理器长期累加处理增益得到有效提高。
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| 关 键 词： | VLBI条纹拟合 卡尔曼滤波 相关处理 深空探测 月球探测 |
VLBI Correlator Dynamic Fringe Fitting Method Research |
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| Authors: | ZENG Fu-hua |
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| Affiliation: | ZENG Fu-hua (The 10th Research Institute of China Electronics Technology Group Corporation, Chengdu 610036, China) |
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| Abstract: | Very long baseline interferometry （VLBI）is an important ultra long-range aircraft angle meas-urement technology,with high spatial resolution.Correlation processing system is an important part of the VLBI.In this paper,by analyzing the feature of the model error,the state transition model of residual de-lays is established.A new algorithm based on the Kalman filter is designed for estimation of residual delay rate.Simulation results show that by using Kalman filter algorithm for fitting processing delay rate,the pro-cessing gain of long time accumulating is effectively improved. |
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| Keywords: | VLBI fringe fitting Kalman filter correlation processing deep space exploration lunar exploration |
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