微波雷達架構下交通流量偵測改進方法

A Scheme for Traffic Flow Detection Improvements using Microwave Radars

鍾孟儒(Meng-Ju Chung)

指導教授 ： 何天讚

中原大學/電機資訊學院/電機工程研究所/碩士(2017年)

https://doi.org/10.6840/cycu201700637

摘要

提供得到即時準確的交通資訊在高速公路、城市鄉間、橋梁道路，道路橋樑對智能交通網絡管理是非常重要的。在本論文中，提出了一種有效檢測方法利用非接觸式微波雷達偵測器來改善交通流量。具體地分析調頻連續雷達波反射車輛信號與回波特性和其背景雜訊不同，因此利用區分信號頻譜。並檢測設定適當的門檻值以準確地辨識出車道內車輛通過的信號。提出的方法可以檢測提高交通雙向車流量的精度。實際交通道路測試實驗來評估所提出的方法。結果證明，所提出的演算法相對於傳統方法有更好的改進。

關鍵字

車輛檢測 ； 調頻連續波 ； 微波雷達檢測器 ； 交通流量 ； 檢測門檻值 ； 背景雜訊

並列摘要

Obtaining accurate real-time traffic information of highways, roads and bridges in urban and rural regions is important to intelligent transportation network management. On this thesis, an efficient method is proposed for improving the traffic flow detection using non-contact microwave radar detectors. Specifically, signal spectrums are analyzed for distinguishing the echo signals of a vehicle, which are reflected from frequency modulated continuous radar waves, from the background noise. Then, adequate detection thresholds are set to accurately identify the signal of a vehicle within a lane. The proposed scheme can enhance the detection accuracy of both lane vehicle flow and directional traffic volume. On-site road traffic experiments are performed to assess the proposed method. The results demonstrate the improvements of the proposed algorithm over the conventional scheme.

並列關鍵字

vehicle detection, frequency modulated continuous wave, microwave radar detector ； traffic flow ； threshold ； background noise

參考文獻

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