RF Replay System for Narrowband GNSS IF Signals

Backén, Staffan; Akos, Dennis; Wilson, Steven G.

doi:10.1109/taes.2011.5705693

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…With the replay option it is possible to adjust receiver hardware and see how it affects the performance on the complex scenario. This method has become increasingly popular, and equipment now exists for easy data recording capability [2,3].…”

Section: B Record and Replay Methodsmentioning

confidence: 99%

Faster than real-time GNSS receiver testing

Paakki

Nurmi

2014

International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)

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The new GNSS systems available present possibilities and chaUenges in the design of modern GNSS receivers. As a part of this challenge, receiver testing is always very important aspect.Careful testing procedures tend to be slow and tedious. In this paper we present a method for speeding up the test process without limiting the testing capabilities. The proposed method is only applicable to testing performed on recorded GNSS data. In this method the recorded data is streamed as fast as possible, without being bound by normal GNSS data rates. Utilizing this kind of architecture on a GNSS receiver can cut the time spent in the testing process by 70% or more, depending on the computational performance of the GNSS receiver platform.Speeding up the test phase of a GNSS receiver is beneficial for both academic and commercial entities, allowing time to be spent on other tasks.

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Section: B Record and Replay Methodsmentioning

confidence: 99%

Faster than real-time GNSS receiver testing

Paakki

Nurmi

2014

International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)

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“…The whole system, denoted as record and replay, has gained much attention in recent years, and the design and the implementation are available in the literature. In [ 19 ], the authors present a detailed description of the design of a system capable of replaying narrowband GNSS IF signals. They also compare the performance of a replayed data set with its live counterpart with regards to position, timing, and signal-to-noise ratio (SNR).…”

Section: Test Record and Replay Approachmentioning

confidence: 99%

Benefits and Limitations of the Record and Replay Approach for GNSS Receiver Performance Assessment in Harsh Scenarios

Cristodaro

Ruotsalainen

Dovis

2018

Sensors

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Global navigation satellite systems play a significant role in the development of intelligent transport systems, where the estimation of the vehicle’s position is a key element. However, in strongly constrained environments such as city centers, the definition of quality metrics and the assessment of positioning performances are challenges to be addressed. Due to the variability of different urban scenarios, the modeling of the dynamics as well as the architecture of the positioning platform, which might embed other sensors and aiding means to the GNSS unit, make it hard to define unambiguous positioning metrics. Performance assessment through analytical models and simulators can be ineffective in terms of cost, complexity, and general validity and scalability of the results. This paper shows how a record and replay approach can be an efficient solution to grant fidelity to a realistic scenario. This work discusses advantages and disadvantages with emphasis on the case study of harsh scenarios. Such an approach requires proper data collections that allow the replay phase to test the GNSS-based positioning terminals. This paper presents the results obtained on a set of field tests related to different scenarios, selected as representative for the key performance indicators assessment.

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