| 摘要 |
<p>PROBLEM TO BE SOLVED: To separate a radiation phase from a phased array in every radiator to measure it quickly. SOLUTION: A point (a) on a complex plane determined by an amplitude and a phase measured by an echo sounder receiver while setting all the N pieces of variable phase shifters to a prescribed value, and points (b), (c) determined by amplitudes and phases measured by the echo sounder receiver when the first and second values different from the prescribed value are set only in the m-th phase shifter are found, a center (o) of a circumscribed circle is found based on the three points (a), (b), (c), and the complex amplitude of a wave radiated from the m-th radiator is determined to be a value provided by subtracting the complex amplitude of the point (o) from the complex amplitude of the point (a).</p> |
