High-speed photonic device technologies in optical fiber connected millimeter-wave radar system for foreign object debris detection on runways

2014 ◽  
Author(s):  
Naokatsu Yamamoto ◽  
Toshimasa Umezawa ◽  
Atsushi Kanno ◽  
Kouichi Akahane ◽  
Tetsuya Kawanishi
Keyword(s):  
Optical Fiber ◽  
Millimeter Wave ◽  
High Speed ◽  
Radar System ◽  
Foreign Object ◽  
Photonic Device ◽  
Millimeter Wave Radar ◽  
Wave Radar

scholarly journals Simultaneous Target Classification and Moving Direction Estimation in Millimeter-Wave Radar System

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5228
Author(s):  
Jin-Cheol Kim ◽  
Hwi-Gu Jeong ◽  
Seongwook Lee
Keyword(s):  
Millimeter Wave ◽  
Radar System ◽  
Sensor Data ◽  
Test Field ◽  
Target Classification ◽  
Radar Sensor ◽  
Millimeter Wave Radar ◽  
Direction Estimation ◽  
Wave Radar ◽  
Moving Direction

In this study, we propose a method to identify the type of target and simultaneously determine its moving direction in a millimeter-wave radar system. First, using a frequency-modulated continuous wave (FMCW) radar sensor with the center frequency of 62 GHz, radar sensor data for a pedestrian, a cyclist, and a car are obtained in the test field. Then, a You Only Look Once (YOLO)-based network is trained with the sensor data to perform simultaneous target classification and moving direction estimation. To generate input data suitable for the deep learning-based classifier, a method of converting the radar detection result into an image form is also proposed. With the proposed method, we can identify the type of each target and its direction of movement with an accuracy of over 95%. Moreover, the pre-trained classifier shows an identification accuracy of 85% even for newly acquired data that have not been used for training.

Advanced Millimeter-Wave Radar System to Detect Pedestrians and Vehicles by Using Coded Pulse Compression and Adaptive Array

2013 ◽  
Vol E96.B (9) ◽  
pp. 2313-2322 ◽  
Author(s):  
Takaaki KISHIGAMI ◽  
Tadashi MORITA ◽  
Hirohito MUKAI ◽  
Maiko OTANI ◽  
Yoichi NAKAGAWA
Keyword(s):  
Millimeter Wave ◽  
Pulse Compression ◽  
Radar System ◽  
Adaptive Array ◽  
Millimeter Wave Radar ◽  
Wave Radar
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