多车干扰下的车距信号采集方法仿真

发布时间：2018-03-20 15:18

本文选题：车辆信号　切入点：信号采集　出处：《计算机仿真》2014年12期 　论文类型：期刊论文

【摘要】：在十字路口丁字路口等特殊区域,多车发生群聚,形成堆积。车辆间的车速与车距等信息不定。在多车距信息采集中,不同车辆的实时速度、车辆距离信号之间存在干扰,受到路口拐角车辆堆积遮挡等效应的影响,目标车距信号无法直接到达采集终端。传统的车辆信号采集在这种情况下,以多直线折射传递损失误差的方法,逼近曲线信号传递过程,一旦逼近计算过程增加,造成采集的车距误差增大。提出基于衰减补偿的车辆车距遮挡信号采集方法。计算车辆信号采集的基本波,针对初始车辆车距信号进行连续小波位移变换,完成了车辆车距多车下信号的抗干扰处理。计算车辆车距遮挡后信号衰减系数估计结果,针对估计结果进行衰减误差补偿,实现车辆车距信号的准确提取。实验结果表明,利用改进算法进行车辆车距信号采集,能够极大地提高车辆信号的准确性,优化效果明显。
[Abstract]:In the special area such as the intersection of T-shaped intersection, many vehicles are clustered and piled up. The speed and distance between vehicles are uncertain. In the multi-distance information collection, the real-time speed of different vehicles and the interference between vehicle distance signals exist. Under the influence of the effect of vehicle stacking and blocking at the corner of the intersection, the target vehicle distance signal can not reach the acquisition terminal directly. In this case, the traditional vehicle signal acquisition method transmits the loss error by multi-line refraction. In the signal transmission process of approximate curve, once the approximate calculation process increases, the distance error of vehicle acquisition is increased. A method of acquisition of vehicle distance occlusion signal based on attenuation compensation is proposed. The basic wave of vehicle signal acquisition is calculated. According to the continuous wavelet displacement transform for the initial vehicle distance signal, the anti-interference processing of the vehicle vehicle distance multi-vehicle signal is completed. The estimation results of the signal attenuation coefficient after the vehicle distance occlusion are calculated, and the attenuation error compensation is carried out for the estimated result. The experimental results show that the improved algorithm can greatly improve the accuracy of vehicle distance signal and the optimization effect is obvious.
【作者单位】：重庆师范大学涉外商贸学院;
【分类号】：U495

【共引文献】