Hologram observation method and hologram observation apparatus and multi-dimensional hologram data processing method and multi-dimensional hologram data processing apparatus

摘要

Scanning sensor scans on a circumference and simultaneously a radiation wave is received by scanning sensor to generate received signal S_m(f). A radiation wave is received by a fixed sensor at a position not changed with respect to the center of a circle with the circumference to generate received signal S_r(f). The received signal S_m(f) is made to interfere with the received signal S_r(f) to acquire an interference signal. The interference signal is detected to obtain measured data E(r,&phgr;) at each point on the circumference. Also, evaluation data V(&phgr;′) is calculated to estimate a direction of the radiation wave based on measured data E(r,&phgr;) at each point. A multi-dimensional hologram data processing apparatus consists of N-dimensional data array memory, N-dimensional flag array memory, N-dimensional array address generating unit, and digital signal processing unit. N-dimensional data array memory is written with N-dimensional array data; N-dimensional flag array memory is written with N-dimensional array flag values; N-dimensional array address generating unit generates addresses for the N-dimensional array data; and digital signal processing unit controls N-dimensional array address generating unit, executes an algorithm, and outputs a peak point detection value and an area detection value.