Abstract
Optical ray tracing permits realistic simulations of light images to be produced by calculating the intensity and color of each individual light ray that is projected into a predefined scene. This paper presents a similar technique for the simulation of sidescan sonar images of under- water environments that are generated by the use of acoustic signals. The inherent properties of light in air and sound in an underwater envi- ronment produce several fundamental differences between the two tech- niques, mainly as a result of the temporal display of the sonar images. This paper investigates these differences, presents the basic methodol- ogy of the sonar simulation model, and illustrates the techniques used to circumvent the time-based display problems. Finally, some results ob- tained using this technique are presented. © 1997 Society of Photo-Optical Instrumentation Engineers. (S0091-3286(97)02006-0)
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