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A Physical Model-Based Analysis of Heterogeneous Environments Using Sonar-ENDURA Method
May 1994 (vol. 16 no. 5)
pp. 497-506

A physical model-based analysis of unstructured environments is presented using sonar as a sensing device. Previous methods have relied only on time-of-flight (TOF) methods and have examined only homogenous environments consisting of either smooth or rough surfaces. In this paper, a forward model for the reflection from a class of surfaces with varying degrees of roughness is presented based on the Kirchhoff approximation method. This model integrates different types of environments into a single analytical framework. The echo intensity is parametrized in terms of its energy content and duration, which are functions of the surface roughness, distance, and orientation. The echo-energy and echo-duration maps are introduced to display these parameters. A systematic and robust procedure (ENDURA method) is presented to analyze the reflections and to differentiate and localize the reflecting surfaces. The methodology is verified with experimental results obtained in our laboratory. The results indicate a significant improvement over conventional TOF systems.

[1] B. Barshan and R. Kuc, "Differentiating sonar reflections from corners and planes by employing an intelligent sensor,"IEEE Trans. Pattern Anal. Machine Intell., vol. 12, no. 6, pp. 560-569, June 1990.
[2] B. Barshan and R. Kuc, "A bat-like sonar system for obstacle localization,"IEEE Trans. Syst., Man Cybern., vol. 22, no. 4, pp. 636-646, July-Aug. 1991.
[3] P. Beckman and A. Spizzichino,Electromagmetic Waves. New York: MacMillan, 1963.
[4] J. Borenstein and Y. Koren, "Histogramic in-motion mapping for mobile robot obstacle avoidance,"IEEE Trans Robotics Automat., vol. 7, no. 4, pp. 535-539, Aug. 1991.
[5] Ö. Bozma and R. Kuc, "Building a sonar map in a specular environment using a single mobile transducer,IEEE Trans. Pattern Anal. Machine Intell., vol. 13, no. 12, pp. 1260-1269, Dec. 1991.
[6] Ö. Bozma and R. Kuc, "Characterizing Pulses reflected from rough surfaces using ultrasound,"J. Acous. Soc. Am., vol. 89, no. 6, pp. 2519-2531, June 1991.
[7] Ö. Bozma, "A physical model-based approach to analysis of environments using sonar," Ph.D. thesis, Yale Univ., 1992.
[8] M. K. Brown, "Feature extraction techniques for recognizing solid objects with an ultrasonic range sensor,"IEEE J. Robotics Automat., pp. 191-205, Dec. 1985.
[9] J. L. Crowley, "Navigation for an intelligent mobile robot,"IEEE J. Robotics Automat., pp. 31-41, Mar. 1985.
[10] C. Eckart, "The scatteting of sound from the sea surface,"J. Acoust. Soc. Am., vol. 25, no. 3, pp. 566-570, May 1953.
[11] A. Elfes, "Sonar based real-world mapping and navigation,"IEEE J. Robotics Automat., vol. 3, pp. 249-265, 1987.
[12] E. P. Gulin, "Reflection of pulse signals from a rough surface,"Am. Inst. Phys., vol. 20, no. 4, pp. 332-337, 1975.
[13] R. Kuc, "A spatial sampling criterion for sonar obstacle detection,"IEEE Trans. Pattern Anal. Machine Intell., vol. 12, no. 7, pp. 686-690, July 1990.
[14] R. Kuc and M. W. Siegel, "Physically based simulation model for acoustic sensor robot navigation,"IEEE Trans. Patt. Anal. Machine Intell., vol. PAMI-9, pp. 766-778, Nov. 1987.
[15] R. Kuc and V. B. Viard, "A physically based navigation strategy for sonar-guided vehicles,"Int. J. Robotics Res., vol. 10, pp. 75-87, Apr. 1991.
[16] A. Papoulis,Probability, Random Variables and Stochastic Processes, 2nd ed. New York: McGraw-Hill, 1984.
[17] A. Rosenfeld and A. Kak,Digital Picture Processing, New York: Academic, 1976.
[18] H. L. Van Trees,Detection, Estimation, and Modulation Theory, Vol. I. New York: Wiley, 1968.

Index Terms:
acoustic signal processing; sonar; physical model-based analysis; heterogeneous environments; sonar; ENDURA method; unstructured environments; time-of-flight methods; Kirchhoff approximation method; echo intensity parametrization; energy content; energy duration; surface roughness; distance; orientation; echo-energy maps; echo-duration maps
Citation:
Ö. Bozma, R. Kuc, "A Physical Model-Based Analysis of Heterogeneous Environments Using Sonar-ENDURA Method," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 16, no. 5, pp. 497-506, May 1994, doi:10.1109/34.291448
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