| 摘要 |
PROBLEM TO BE SOLVED: To effectively perform two-dimensional imaging in an azimuth space especially without unnecessarily increasing the numbers of elements and receivers concerning a Doppler imaging device by an array sensor. SOLUTION: In the projection reconstitution type focal plane array Doppler imaging device, a stripe array converter which can be rotated at least by 180 deg. exists on the focal surface of an image forming system by an acoustic lens. A Doppler receiver is connected to each of the element of the converter, and the received wave signal of each element is coherent-detected to extract Doppler shift components through a Doppler filter. By coherent-detecting its result, the power of the Doppler shift components are evaluated. With the image of the result of power evaluation in an element space as projection data, projection data is collected from multi-directions while rotating. The normal vision image of the Doppler shift components of an object can be obtained on a display device by a CT algorithm by a computer from the set of projection data. A logical aperture utilization factor is 100% concerning both of a spatial axis and a time axis.
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