Vehicle navigation system accuracy and noise immunity improvement techniques

Navigation instruments


Аuthors

Antonov D. A.*, Zharkov M. V.**, Kuznetsov I. M.***, Tchernodoubov A. Y.****

,

*e-mail: oxface@yandex.ru
**e-mail: mv_zharkov@mai.ru
***e-mail: im_kuznetsov@mai.ru
****e-mail: andy.g.tch@gmail.com

Abstract

The main source of navigation information of most known intelligent transportation system (ITS) projects is an on-board satellite navigation system (SNS) GPS-GLONASS receiver. The key feature of SNS consists in positioning accuracy and noise immunity level decreasing in case of operation in compact urban planning due to multipath. The paper analyses the requirements for a vehicle navigation system application as a part of ITS, and estimates functional limitations caused by the features operation specifics in urban environment conditions. Techniques of multipath occurring in dense urban conditions mitigation are also presented.

Today lots of satellite navigation system (as a part of ITS) accuracy and noise immunity improvement techniques exist and being researched at various levels. One of the most prospective approach is an on-board vehicle navigation system design, functioning in ITS, as navigation complex using cooperative information processing techniques form SNS receiver, inertial sensors, odometer measurements and other sensors and vehicle systems. The advantage of this approach is not only the accuracy of vehicle movement parameters improvement but also the possibility to improve fault tolerance by timely detection and exclusion of abnormal measurements from navigation solution, which oftenly occurs in compact urban planning conditions.

The paper discusses accuracy and noise immunity of vehicle navigation system improvement techniques using algorithmic and hardware/software approaches, including complex information processing algorithms. Based on current and prospective requirements to vehicle navigation system accuracy and the existing accuracy and noise immunity improvement techniques analysis, the recommendations for complex fault-tolerant vehicle navigation system design are formulated.

The study was performed under the financial support of Russian Foundation for Basic Research and The government of Moscow as a part of the research project No 15-38-70055. The main part of the research consists in recommendations on complex fault-tolerant vehicle navigation system design formation which should allow system design with declared specification at the next stage of the project using world experience in this area of research.

Keywords:

intelligent transportation system, inertial navigation system, MEMS inertial sensors, satellite navigation system, multipath, optimal information processing, integrated navigation system

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