摘要
主要研究了线性调频扩频技术定位系统误差修正方法,提出了基于距离几何约束方程和线性调频扩频测距误差模型结合的动态误差修正算法,求解每个定位点对应的最佳测距误差模型对测量距离进行动态修正,最大限度减小测距误差。最后通过室内定位实验对比分析了动态修正法、距离几何约束Ming Cao修正法和静态修正法的性能,实验结果表明动态修正算法能更好地修正测量距离改善定位精度。
An approach to correct distance measurement error for CSS-based localization by the combination with distance geometry constraints and CSS ranging error model is introduced in this paper. Specific ranging model parameters of every localization point are derived from the proposed algorithm to dynamically correct the measurement errors to minimum. At last the proposed algorithm is verified by the experiments performed in real indoor LOS environment, As compared with Ming Cao distance geometry constraints correction and direct ranging error model correction, the dynamic error correction algorithm is better.
出处
《机械制造与自动化》
2013年第1期89-92,100,共5页
Machine Building & Automation
关键词
无线传感网络
定位
线性调频扩频技术
距离几何约束
误差
wireless sensor networks （WSNS）
localization
chirp spread spectrum
distance geometry constraints
error
