Positioning apparatus, control method of positioning apparatus

Abstract

The present invention provided a positioning apparatus and the like, which has no use for storing enormous data, and can improve the receiving delicacy of the code as the positioning standard even without high precision time information. The positioning apparatus includes: time information receiving unit for receiving the time information; positioning time unit information estimating means for estimating positioning time unit information which is the unit information received at positioning time based on the satellite orbit information and the time information; polarity reversal rate information generating means for generating polarity reversal rate information which indicates a rate of reversal of the polarity of a positioning standard code put on the satellite signals based on the positioning time unit information; positioning standard code polarity adjusting means for keeping or reversing the polarity of the positioning standard code based on the polarity reversal rate information; interference unit for the interference, which is to calculate the disposal of the correlative integral value between the positioning standard code and the positioning apparatus (20) having the simulative positioning standard code; as well as other unit.

Description

technical field [0001] The invention relates to a positioning device and a control method of the positioning device for positioning using radio waves emitted by positioning satellites. Background technique [0002] At present, a positioning system for locating the current position of a GPS receiver using, for example, GPS (Global Positioning System), which is a satellite navigation system, has been applied in real life. [0003] The GPS receiver receives C / A (Clear and Acquision or Coarse and Access) codes based on navigation messages indicating orbits of GPS satellites (including rough satellite orbit information: rough ephemeris; precise satellite orbit information: precise ephemeris, etc.) , the C / A code is one of pseudo-noise codes [hereinafter referred to as PN (Psuedo random noise code: pseudorandom noise code)] carried by radio waves from GPS satellites (hereinafter referred to as satellite radio waves). The C / A code is a code serving as a basis for positioning. [...

AI Technical Summary

Problems solved by technology

[0011] However, according to the technology described in Patent Document 1, only one of the 20 types of dummy patterns can unify the polarity of the PN signal, and the processing time becomes longer due to redundant processing that cannot be used in positioning calculations. , and, because of the need to store huge data, thus increasing the processing burden of the GPS receiver

[0012] Furthermore, according to the technology described in Patent Document 2, since the position where the navigation data is reversed is specified, there is a problem that a high-precision time of 1 millisecond (msec) or less (less than or equal to 1 millisecond) is required.

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