船用雷达ARPA数据精度算法研究

发布时间：2018-10-21 13:07

【摘要】：船用雷达ARPA功能用于船舶避碰报警,其可靠性和精确性直接关系到船舶交通的安全。本文主要针对ARPA算法在数据精度上的分析,在现有的ARPA算法基础上加以改进,提高ARPA数据的精度。从而进一步提高船用雷达的ARPA性能。本文第一部分首先对船用雷达ARPA功能和作用简单介绍,然后对现有的ARPA算法进行分析,阐述ARPA算法数据处理流程,并对于一些相关技术进行说明。接着详细分析数据处理过程中的误差。第一,追踪误差,在对目标追踪过程中出现目标丢失和误跟踪情况。第二,航迹误差,一方面在获取目标过程中出现航迹点的偏差,另一方面在目标机动情况下航迹偏差。本文第二部分,是针对以上误差提出相应的解决措施。首先对于目标丢失和误跟踪,文中采用更先进的波门算法以提高对目标追踪的准确性。然后对于测量点的偏移采取滤波处理。具体内容包括建立符合现有误差的测量点数学模型,结合均方滤波和α-β滤波等算法实现对航迹,航向和航速的平滑滤波。本文第三部分是对改进算法的精度验证。精度验证包括两个部分,一方面采用MATLAB仿真软件对算法分析,另一方面是利用雷达模拟器模拟船舶运行,并对改进前后的ARPA功能分别测试,根据测量数据分析精度优化效果。最终得出本论文对于ARPA数据的精度做出非常好的优化,船用雷达的ARPA性能更加准确可靠,在船舶的交通安全中启到了重要作用。
[Abstract]:The ARPA function of marine radar is used for ship collision prevention alarm, and its reliability and accuracy are directly related to the safety of ship traffic. This paper mainly aims at the analysis of the data precision of ARPA algorithm, and improves on the existing ARPA algorithm to improve the accuracy of ARPA data. Thus the ARPA performance of marine radar is further improved. In the first part of this paper, the functions and functions of marine radar ARPA are introduced briefly, then the existing ARPA algorithm is analyzed, the data processing flow of ARPA algorithm is expounded, and some related techniques are explained. Then the error in the process of data processing is analyzed in detail. First, tracking error, target loss and false tracking occurred in the process of target tracking. Second, the track error, on the one hand, the track point deviation in the process of obtaining the target, on the other hand, the track deviation in the case of target maneuvering. The second part of this paper is to put forward the corresponding solutions to the above errors. Firstly, more advanced wave gate algorithm is used to improve the accuracy of target tracking. Then the offset of the measurement point is filtered. The main contents include the establishment of a mathematical model of measurement points that accord with the existing errors, and the realization of smooth filtering of track, course and speed by means of mean square filtering and 伪-尾 filtering. The third part of this paper is to verify the accuracy of the improved algorithm. The accuracy verification includes two parts. On the one hand, the algorithm is analyzed by MATLAB simulation software; on the other hand, the ship operation is simulated by radar simulator, and the ARPA function before and after the improvement is tested separately, and the precision is optimized according to the measurement data. Finally, it is concluded that this paper optimizes the accuracy of ARPA data, and the ARPA performance of marine radar is more accurate and reliable, which plays an important role in the ship traffic safety.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN957.51

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