Elevated road vehicle-mounted auxiliary navigation algorithm, and applications thereof

Abstract

The invention discloses an elevated road vehicle-mounted auxiliary navigation algorithm, and applications thereof. The elevated road vehicle-mounted auxiliary navigation algorithm is characterized in that an acceleration sensor is used for collecting vehicle gravity direction real-time acceleration signal component; combination with a cartographic information system is adopted, and limited time window elevated road predicting algorithm is adopted. The elevated road predicting algorithm comprises following steps: 1, g direction acceleration component is collected; 2, dip angle conversion, and segmented timing are carried out; 3, elevated road predicting algorithm is adopted; 4, cartographic information matching is carried out, wherein if cartographic information matching is not realized, the processes return to step 1 for g direction acceleration component collection, and the steps from 1 to 4 are repeated, otherwise a next step is carried out; and 5, elevated road predicting and planning of a driving plane are carried out. Hardware implementation cost of the elevated road vehicle-mounted auxiliary navigation algorithm and applications thereof is low; navigation accuracy is increased; real-time route planning is convenient and rapid to realize; algorithm is simple; transportability is high; and the elevated road vehicle-mounted auxiliary navigation algorithm is suitable for portable equipment such as navigators, mobile phones, and PAD.

Description

technical field [0001] The invention relates to the field of vehicle navigation, in particular to an elevated road vehicle auxiliary navigation algorithm and its application. Background technique [0002] At present, most of the car navigation uses GPS navigation technology, and some use Beidou navigation technology. The principle of these two navigation technologies is to locate the vehicle through satellite signals, and then compare it with the map information system to plan the navigation route. [0003] During the driving of the vehicle, when encountering figure 1 When the ground and elevated parallel roads are shown, the existing navigation algorithm cannot effectively identify the elevated or ground roads. It is necessary to wait until the map information system judges that the trajectory of the elevated and the ground diverges before re-planning a new route. In practical applications, due to the accuracy error of GPS or Beidou navigation, especially in road sections ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the main problems existing in the prior art, such as the inability to effectively identify elevated roads or ground roads, and the inability to perform fast, real-time and effective planning for road sections where multiple elevated crossings are concentrated, so as to accurately judge elevated roads and ground roads, Effectively improve navigation accuracy and avoid traffic congestion

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