Navigation enhanced signal generating method and system
A technology to enhance signal and navigation signal, applied in the field of satellite navigation, can solve problems such as inability to continue navigation, inability to monitor positioning, secondary hazards, etc.
Inactive Publication Date: 2019-08-02
HUNAN GUOKE DEFENSE ELECTRONICS TECH CO LTD +1
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[0003] However, the inherent limitations of satellite navigation systems make satellite navigation services have obvious inadequacies and gaps in capabilities. For example, in indoor, underground, tunnel, underwater, mountain or urban canyon environments, weak satellite navigation signals are not enough to penetrate various Physical shelters, navigation terminal users cannot use satellite navigation and positioning services, making these areas "blank areas", which can neither be used for real-time navigation, continuous navigation, nor monitoring and positioning.
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[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are Some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. figure 1 As shown in the schematic flow chart of the method of the present invention, the present invention provides a method for generating a navigation enhancement signal, comprising the following ste...
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The invention, which relates to the field of satellite navigation, discloses a navigation enhanced signal generating method. The method comprises: S1, receiving a real GNSS satellite navigation signalin real time; S2, acquiring time information, position information, navigation telegraph text information in the real GNSS satellite navigation signal, sending the time information to a time frequency unit, and sending the position information and the navigation telegraph text information to a navigation signal regeneration unit; S3, providing time and frequency references for the navigation signal regeneration unit by the time frequency unit; and S4, generating a navigation enhanced signal by the navigation signal regeneration unit based on the position information and the navigation telegraph text information and broadcasting the signal in an area. In addition, the invention also provides a navigation enhanced signal generating system. According to the invention, the generated satellitenavigation enhanced signal and the real satellite navigation signal keep the time synchronization and signal format consistency; the enhanced signal regeneration unit is provided with a combined navigation unit and the generated satellite navigation enhanced signal can provide the continuous positioning service in an indoor environment like a tunnel or an underground parking lot.
Description
technical field [0001] The invention relates to the field of satellite navigation, in particular to a positioning method and system for enhancing navigation signals. Background technique [0002] Satellite navigation systems represented by GPS, GLONASS, Beidou, and Galileo can provide users with cheap, 24-hour uninterrupted positioning services by transmitting radio frequency signals through medium and high orbit satellites. The basic components of mobile phones and wearable devices have become the basic means for people to travel, obtain location information and location-based services, and the user base is extremely large. [0003] However, the inherent limitations of satellite navigation systems make satellite navigation services have obvious inadequacies and gaps in capabilities. For example, in indoor, underground, tunnel, underwater, mountain or urban canyon environments, weak satellite navigation signals are not enough to penetrate various Physical shelters, navigati...
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IPC IPC(8): G01S19/10G01S19/02
CPCG01S19/02G01S19/10
Inventor 明德祥钟小鹏刘志俭刘春阳乔纯捷杨建伟
Owner HUNAN GUOKE DEFENSE ELECTRONICS TECH CO LTD