Pseudolite indoor navigation method based on false point

Abstract

The invention discloses a pseudolite indoor navigation method based on a false point, wherein the method includes steps of regulating indoor pseudolite, and regulating a PRN number of a visible GPS satellite to the pseudolite; applying the regulated pseudolite to simulate the GPS satellite signal at the zone to be located, generating and sending the pseudolite signal; according to the pseudolite signal, acquiring and outputting the false point coordinate on the basis of the set agreement; judging the positioning zone according to the pseudolite coordinate; solving the GPS satellite coordinate; acquiring the pseudolite coordinate corresponding to the GPS satellite; according to the positioning zone, analyzing and calculating the false point coordinate, the pseudolite coordinate and the GPS satellite coordinate, and acquiring the current user coordinate. The pseudolite indoor navigation method has arranged the indoor pseudolite which is the same as the outdoor GPS satellite signal, and the demand of the indoor navigation can be completed by using an ordinary GPS receiver; compared with the other indoor navigation technology, the positioning precision is higher, the cost is lower, and the universality is stronger.

Description

Technical field [0001] The invention relates to the field of indoor navigation, in particular to a pseudo satellite indoor navigation method based on pseudo points. Background technique [0002] GNSS signal itself is also a kind of electromagnetic wave signal, it has all the characteristics of electromagnetic wave characteristics, such as relatively fragile and easy to be interfered; while GNSS signal is transmitted from satellite to receiver, the environment of this intermediate path is very complicated and easy to receive. To all kinds of interference, so that the received signal is very weak. When the GNSS receiver works indoors, the signal is greatly attenuated due to the influence of buildings, and the positioning accuracy is also very low. It is impossible to directly extract navigation data and time information from satellite broadcasts as in the outdoors. [0003] With the successful implementation of satellite-based positioning service applications outdoors, the challenge...

AI Technical Summary

Problems solved by technology

[0002] The GNSS signal itself is also an electromagnetic wave signal, which has all the characteristics of electromagnetic waves, such as being relatively fragile and susceptible to interference; while the GNSS signal is transmitted from the satellite to the receiver, the environment in the middle path is very complicated, and it is easy to receive. to various interferences, making the received signal very weak

When the GNSS receiver works indoors, the signal is greatly attenuated due to the influence of buildings, and the positioning accuracy is also very low. It is impossible to directly extract navigation data and time information from satellite broadcasts as outdoors

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