Satellite navigation signal regenerating device, system and method

Abstract

The invention relates to the field of satellite navigation and discloses a satellite navigation signal regenerating device comprising a time frequency unit, a simulating calculation unit, a signal regenerating unit and a signal emitting unit, wherein needed time frequency reference signals are output to the simulating calculation unit and the signal regenerating unit by the time frequency unit; the time frequency unit drives the simulating calculation unit to calculate simulation data according to constellation parameter information, the signal regenerating unit generates satellite navigation signals according to the time frequency reference signals and the simulation data, and the generated satellite navigation signals are broadcast via the signal emitting unit. Via time frequency reference synchronization, data simulation synchronization and signal generation synchronization, that regenerated satellite navigation signals and received satellite navigation signals are consistent in time frequency and constellation parameters can be ensured by the satellite navigation signal regenerating device disclosed in the invention. The invention also discloses a satellite navigation signal regenerating system and method.

Description

technical field [0001] The invention mainly relates to the field of satellite navigation, in particular to a satellite navigation signal regenerator, system and method. Background technique [0002] Due to the long distance from the satellite to the ground, the GNSS signal received by the ground is weak, and the GNSS signal is further blocked or attenuated by the barriers of canyon forests, building walls or roofs, and the GNSS signal can be further weakened when the weather changes badly. Therefore, in indoor or so-called darkroom environments or outdoors, as well as in deep mountains and canyons, and GNSS signals cannot be normal or difficult to be received by navigation terminals, which brings people's indoor activities or outdoor adventures, traffic and other life. Inconvenience. [0003] Based on pseudolite enhancement technology, due to the need to use special navigation terminals and the difficulty of engineering implementation, it is impossible to solve the problem ...

AI Technical Summary

Problems solved by technology

[0002] Due to the long distance from the satellite to the ground, the GNSS signal received by the ground is weak, and the GNSS signal is further blocked or attenuated by the barriers of canyon forests, building walls or roofs, and the GNSS signal can be further weakened when the weather changes badly. Therefore, in indoor or so-called darkroom environments or outdoors, as well as in deep mountains and canyons, and GNSS signals cannot be normal or difficult to be received by navigation terminals, which brings people's indoor activities or outdoor adventures, traffic and other life. Inconvenience

[0003] Based on pseudolite enhancement technology, due to the need to use special navigation terminals and the difficulty of project implementation, it is impossible to solve the problem of satellite navigation positioning or testing in indoor or darkroom environments or deep mountains and valleys without changing the existing navigation terminals.

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