In order to be able to measure the velocity of a moving body with high accuracy by suppressing the influence of installation height, this velocity measurement device is provided with: a radar unit that detects a moving body moving along a road and outputs a detected value rm of distance, a detected value theta m of azimuth angle, and a detected value Vm of velocity, which is Doppler velocity; a storage unit that stores a [theta]-rV curve (characteristic curve) indicating the relationship between the azimuth angle [theta] and an rV value (characteristic quantity) given by the product of the distance and the speed at a predetermined speed; and a processor that estimates the velocity of the moving body on the basis of the detected value rm of the distance, the detected value [theta] m of the azimuth angle, and the detected value Vm of the velocity, the processor calculating a measured value (rm * Vm) of the rV value by multiplying the detected value rm of the distance and the detected value Vm of the velocity. The estimation result of the velocity is acquired on the basis of the [theta]-rV curve, the measured value of the rV value, and the detected value [theta] m of the azimuth angle.
为了能够抑制设置高度的影响从而高精度地测定移动体的速度,本发明的速度测定装置具备:雷达部,其检测沿着道路移动的移动体,并输出距离的检测值rm、方位角的检测值θm以及速度的检测值Vm,其中,该速度是多普勒速度;存储部,其存储表示规定的速度下的通过距离与速度之积给出的rV值(特性量)与方位角θ之间的关系的θ‑rV曲线(特性曲线);以及处理器,其基于距离的检测值rm、方位角的检测值θm以及速度的检测值Vm来估计移动体的速度,其中,处理器将距离的检测值rm与速度的检测值Vm相乘来计算rV值的测定值(rm×Vm),并基于θ‑rV曲线、rV值的测定值以及方位角的检测值θm来获取速度的估计结果。
Speed measurement device and speed measurement method
速度测定装置和速度测定方法
2022-11-04
Patent
Elektronische Ressource
Chinesisch
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