High-precision positioning and navigation system

Abstract

The invention discloses a high-precision positioning and navigation system, which comprises a combined positioning unit, an intelligent ranging unit, a cloud communication unit and a vehicle-mounted display unit, wherein the combined positioning unit is used for realizing real-time positioning of the vehicle; the intelligent ranging unit is used for realizing calculation on the distance between the vehicle and a surrounding target; and the cloud communication unit is used for receiving data generated by the combined positioning unit and the intelligent ranging unit and uploading the data to a cloud service center, the cloud service center carries out map labeling on navigation positioning data, and the labeling information is issued to the vehicle-mounted display unit. The system of the invention is based on multi-parameter integrated processing, positioning data of the current dead zone can be effectively corrected and supplemented, errors of ultrahigh frequency microwave ranging can be effectively reduced, ranging types and the ranging range can be expanded, the ranging precision is improved, positioning reliability is high, and the maintenance cost is low.

Description

technical field [0001] The invention relates to the field of vehicle navigation, in particular to a high-precision positioning navigation system. Background technique [0002] Today's car positioning monitoring and navigation system, its core components usually include: positioning module (using GPS module or Beidou positioning module), data communication module (using GPRS or 3G) and data processing module and system platform. Moreover, the positioning module is indispensable in almost all vehicle positioning monitoring and navigation systems at present. The positioning module is the most basic source of location data. [0003] However, in the prior art, no matter whether the GPS module or the Beidou positioning and navigation module is used, the GPS signal fading is very large or the GPS signal cannot be received, the function of positioning and navigation will not be realized; when the number of GPS received is small, It will also lead to inaccurate positioning data, an...

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Problems solved by technology

[0003] However, in the prior art, no matter whether the GPS module or the Beidou positioning and navigation module is used, the GPS signal fading is very large or the GPS signal cannot be received, the function of positioning and navigation will not be realized; when the number of GPS received is small, It will also lead to inaccurate positioning data, and there are problems such as random deviations, that is, in the prior art, no matter whether the positioning and navigation system adopts the GPS module or the Beidou positioning and navigation module, there is a problem of positioning blind spots.

[0004] With the wide application of gyroscopes, in order to solve the problem of positioning blind spots in existing positioning and navigation systems, various vehicle positioning monitoring and navigation systems based on gyroscope inertial navigation, or GPS / Beidou and gyroscope integrated navigation have emerged one after another. However, In the prior art, the system implementation cost of the above solution is relatively high, and the error is also relatively large, resulting in inaccurate navigation and positioning

[0005] In addition, in order to reduce safety accidents, the existing vehicle navigation system generally installs a distance measuring unit to give an alarm when the distance between the vehicle and the obstacle is less than the safe distance. However, the current distance measuring devices generally use laser, ultrasonic or infrared technology. The changes in the environment are more obvious, and the distance measuring device using the above technology still has monitoring blind spots, especially in low light conditions, so that the system will miss or falsely report, and the stability will be poor.

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