VLF (very low frequency) communication station broadcast delay calibration method and VLF communication station broadcast delay calibration system

The invention provides a very-low-frequency communication station broadcast delay calibration method and system. The method comprises the following steps: erecting very-low-frequency signal detection equipment at a set distance of a communication station; the very-low-frequency signal detection equi...

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Hauptverfasser:	BU WENHAO, QIN JIE, PANG XILANG, LIU XIANG, WAN SHUANG'AI, WEI KEQUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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creator	BU WENHAO QIN JIE PANG XILANG LIU XIANG WAN SHUANG'AI WEI KEQUAN
description	The invention provides a very-low-frequency communication station broadcast delay calibration method and system. The method comprises the following steps: erecting very-low-frequency signal detection equipment at a set distance of a communication station; the very-low-frequency signal detection equipment receives a very-low-frequency signal, compares the very-low-frequency signal with a clock phase of the very-low-frequency signal detection equipment, calculates and obtains a signal propagation delay inequality by considering phase lag caused by the distance between the very-low-frequency signal detection equipment and the very-low-frequency communication station, and transmits the signal propagation delay inequality back to the very-low-frequency communication station; the very-low-frequency communication station modulates the signal propagation delay inequality into a very-low-frequency signal broadcasted by the very-low-frequency communication station, a receiving user receives and demodulates the very-low
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subjects	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
title	VLF (very low frequency) communication station broadcast delay calibration method and VLF communication station broadcast delay calibration system
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