| 摘要 |
PROBLEM TO BE SOLVED: To enhance the reliability of sonar by conjecturing the searchable range of the sonar with high accuracy and to visualize a conjecture pattern to easily grasp the state in the searching spot. SOLUTION: A steady statistic value related to ocean/weather/sound and model data for estimating a non-steady effect factor are acquired from a DB part 10 and an effect factor calculation part 30 collects actual ocean/weather/sound environment data 31 in a field sea area and actually measured data 32 related to the sonar and a platform, and the statistic value and estimate data are subjected to identification processing in an identification processing part 40. A sound factor conversion part 50 and a sound factor calculation part 60 calculate propagation loss, reverberation and noise on the basis of environment data subjected to identification processing and the data 32. A target sound source model 90 inputs the position/depth of a target, and calculates the acoustical feature of the sonar using a model. A three-dimensional searching/conjecturing calculation part 100 conjects and calculates a searching range A from the sound factor, the acoustical feature of the sonar and the data 32 three- dimensionally to display the same. The object in a battlefield is displayed as symbols 130, 140 and 150.
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