| 摘要 |
<p>PURPOSE:To direct a fan beam in a right direction by selecting a phase correction data corresponding to a rolling angle of an antenna. CONSTITUTION:An exciter/receiver 1 radiates a transmission signal at an antenna 2 and the signal reflected from a target is received with the antenna 2 to be inputted into a signal processor 8 through the receiver 1. Then, a beam space stabilization processing circuit 11 outputs a roll angle phi to a data selection circuit 14 besides beam angle data x, y and z of an antenna. Here, a phase correction value data storage circuit 6 stores a phase correction data for formation of a fan beam at each detail rolling angle of the antenna 2 beforehand and the circuit 14 selects the phase correction data corresponding to a rolling angle phi inputted from the circuit 11. Then, a phase shift value computing circuit 5 computes a phase shift value set for a plurality of antenna elements according to the beam angle data x, y and z and an adder 7 adds the phase correction data to the phase shift value to be transferred to the antenna 2. This always enables direction of the fan beam in a right direction regardless of a change in the rolling angle phi.</p> |
