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    • 5. 发明公开
    • NON-ECHO ULTRASONIC DOPPLER FOR CORRECTED INERTIAL NAVIGATION
    • NICHT-ECHO-ULTRASCHALLDOPPLERFÜRKORRIGIERTE INTETINAVIGATION
    • EP2912408A1
    • 2015-09-02
    • EP13795893.0
    • 2013-10-15
    • Symbol Technologies, Inc.
    • CALVARESE, Russell, E.
    • G01C21/16G01S11/14
    • G01S11/14G01C21/165
    • A method and device for non-echo ultrasonic Doppler used for corrected inertial navigation includes providing at least one ultrasonic emitter within an environment, each emitter configured for transmitting an ultrasonic tone of a predefined frequency. An initial location of the mobile device is established within the environment. Dead reckoning procedures are initiated using sensors within the mobile device. The device receives at least one ultrasonic tone from an emitter, and converts the at least one ultrasonic tone into a digital waveform. The device determines at least one peak frequency of the digital waveform, and subtracts the at least one peak frequency from each predefined frequency to determine at least one Doppler shift, which is used for correcting the dead reckoning of the mobile device.
    • 用于校正惯性导航的用于非回波超声多普勒的方法和装置包括在环境内提供至少一个超声波发射器,每个发射器被配置用于发送预定频率的超声波音调。 在环境中建立移动设备的初始位置。 使用移动设备内的传感器启动航位推算程序。 该设备从发射器接收至少一个超声波音调,并将该至少一个超声波音调转换为数字波形。 该装置确定数字波形的至少一个峰值频率,并从每个预定频率减去至少一个峰值频率,以确定用于校正移动装置的推算的至少一个多普勒频移。