现代电子技术2013，Vol.36Issue(1)：164-166,170,4.
多通道数字鉴相车辆定位模块设计
Design of multi-channel digital phase demodulator for positioning vehicles
许庆 1曾瑞锋 1苗一新 1黄贞松1
作者信息
- 1. 南京电子器件研究所,江苏南京210016
- 折叠
摘要
Abstract
This paper presents a new design of multi-channel digital phase demodulator, which is used for positioning vehi-cles by radio signals in electronic toll collection (ETC) application. The module has five receivable channels with nine antennas. Phase differences between the antennas are measured accurately to pick out the car's location and direction information. The change of phase differences produced by environment can be calibrated by the inner calibration circuit. The result of max phase difference is less than 5° and max amplitude difference is less than 1 dB. After calibration, phase difference between outer and inner is less than 2°. The multi-channel phase demodulator is first applied in inland ETC system. The precision of positioning ve-hicles is less than 1 meter.关键词
电子收费/车辆定位/数字鉴相/射频识别Key words
ETC/positioning vehicle/digital phase demodulator/radio frequency identification分类
信息技术与安全科学引用本文复制引用
许庆,曾瑞锋,苗一新,黄贞松..多通道数字鉴相车辆定位模块设计[J].现代电子技术,2013,36(1):164-166,170,4.
