Design and evaluation of a fast model-based algorithm for ultrasonic range measurements

Raya, Rafael; Frizera, Anselmo; Ceres, R.; Calderón, L.; Rocón, Eduardo

doi:10.1016/j.sna.2008.07.001

Cited by 36 publications

(22 citation statements)

References 7 publications

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“…Correlations of signals modulated by polynomials W1(x), W2(x) and also by assumed modulator parameters were performed according to formulae: (5) and (7)- (10). All correlations, for the first criterion, as well as for the second one, were conducted for 0; L m ∈ , where L = 500 000.…”

Section: Choice Of Parameters Of Modulating Polynomialsmentioning

confidence: 99%

“…However, research have proved that the one-impulse approach is insufficient and does not give satisfying and unequivocal results in cases when the medium parameters are complex or undergo fast changes [9]. The system presented by authors in the earlier article [9] answered the need for a more advanced tool: it emitted a continuous modulated wave signal, instead of a single impulse, and then an analysis of the received continuous superposition of reflections [10] using correlation methods was performed.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Three-Head Ultrasonic System for Distance Measurements Based on the Correlation Method

Gądek

Dudzik

Stręk

2014

Measurement Science Review

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A novel double-emitter ultrasonic system for distance measurements based on the correlation method is presented. The proposed distance measurement method may be particularly useful in difficult conditions, e.g. for media parameters undergoing fast changes or in cases when obstacles and mechanical interference produce false reflections. The system is a development of a previously studied single-head idea. The present article covers a comparison of the two systems in terms of efficiency and precision. Experimental research described in this paper indicated that adding the second head improved the measurement exactness -standard deviation decreased by 40%. The correlation method is also described in detail, also giving the criterion for the quality of the measurement signal.

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Section: Choice Of Parameters Of Modulating Polynomialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Three-Head Ultrasonic System for Distance Measurements Based on the Correlation Method

Gądek

Dudzik

Stręk

2014

Measurement Science Review

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show abstract

“…Eventually, ultrasonic sensors were selected because of their relative simplicity (in terms of system configuration and signal processing capability) and for the intrinsic possibility of obtaining range information to obstacles and the possibility of configuring independent detection lobes without additional angular scanning. The detection principle is based on computing the time of flight between transmitted ultrasonic waves and received echoes, using specific algorithms for detecting the start Concretely, a fast model-based algorithm for ultrasonic range measurements has been designed and evaluated an error estimation lower than 0.5 centimeter, Raya et al (2008). The algorithm is based on the mathematical model of the ultrasonic envelope signal.…”

Section: Fully User Guided (Level 4)mentioning

confidence: 99%

New Strategies of Mobility and Interaction for People with Cerebral Palsy

Raya¹,

Rocón²,

Ceres³

et al. 2012

Assistive Technologies

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“…The former method is not the most appropriate since it depends on the noise level in system which may vary on uncontrollable elements. Many approaches were presented to solve this problem [5][6][7][8]. But purposes were not largely achieved until the cross-correlation method was introduced to the TOF estimation [9,10], which is arguably the optimal TOF estimation method.…”

Section: Introductionmentioning

confidence: 99%