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Communication Dans Un Congrès Année : 2011

Repeater based indoor positioning summary of experimental campaigns of measurements

Résumé

The repeater indoor positioning system is based on the use of GNSS so-called repeaters in order to provide GNSS availability indoors through the way of an amplification of the signals received on an outdoor (typically on the roof) antenna or generated by a signal generator. The complete system, already described in previous conferences, uses four repeaters in order to provide a full 3D indoor positioning. The measurements, at the receiver end, are the pseudo-ranges at the instant of transition from one repeater to the next, the transmission being achieved through a sequential scheme (only one repeater transmitting at any given time). This approach implements a sort of "time differential" approach that provides a good positioning accuracy. The multipath problem is dealt with through the use of the SMICL (Short Multipath Insensitive Code Loop) design, already fully described in previous papers. In addition regulations tend to be provided for both repeaters and pseudolites and must be taken into account. The complete system, including both the infrastructure to be deployed and the various algorithms required at the receiver end (mainly the tracking loops), has been implemented in such a way it is possible to test and evaluate the indoor positioning in all desired environments. Thus, measurement campaigns were performed in Italy and in France in various indoor environments including large halls, classrooms, amphitheatre and car parks. Various receivers were also tested with different receiving bandwidth, ranging from 2 to 30 MHz, using either a standard Delay Locked Loop or the above mentioned SMICL approach. Results are provided concerning of course the accuracy of the achieved positioning, but also a full comparison of the performance of the receivers and associated data processing. All these results are also presented for the various tested environments

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Dates et versions

hal-01302214 , version 1 (13-04-2016)

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  • HAL Id : hal-01302214 , version 1

Citer

Anca Fluerasu, Alexandre Vervisch-Picois, Nel Samama. Repeater based indoor positioning summary of experimental campaigns of measurements. ENC 2011 : European Navigation Conference, Nov 2011, London, United Kingdom. ⟨hal-01302214⟩
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