초록 ▼

A high frequency target seeking device, using a stabilized reflector antenna, performs range search and tracking functions and target angle search and tracking functions. A technique is provided for target range discrimination using several narrow band i.f. filters, also thereby improving signal-to-

A high frequency target seeking device, using a stabilized reflector antenna, performs range search and tracking functions and target angle search and tracking functions. A technique is provided for target range discrimination using several narrow band i.f. filters, also thereby improving signal-to-clutter ratio and signal-to-receiver noise ratio. Target search is accomplished with simultaneous range and antenna azimuth scanning, with the range bins and the antenna beam swept across the target. A multiplexer selects the range bin having signals indicative of the target. Target range tracking is accomplished by the multiplexer additionally automatically selecting range bins adjacent to the target\s range bin and comparing their output signals. Antenna stabilization is accomplished utilizing signals from vehicle pitch, roll, and yaw rate sensors, and antenna elevation and azimuth rate and angle sensors. These signals are processed in the antenna control circuit according to predetermined relationships to provide the desired antenna stabilization.

대표청구항 ▼

High frequency, vehicle coupled, target detecting seeker system having search and track modes and having twist reflector antenna means coupled to receiver means comprising: a high frequency target sensor system having search and track modes coupled to said receiver means for detecting the position a

High frequency, vehicle coupled, target detecting seeker system having search and track modes and having twist reflector antenna means coupled to receiver means comprising: a high frequency target sensor system having search and track modes coupled to said receiver means for detecting the position and range of said target and for providing target range signals, and signals Kee representative of the difference between said antenna\s actual and desired line of sight rates of angular change with respect to a first predetermined reference in a first direction, and signals Kea representative of the difference of said antenna\s actual and desired line of sight rate of angular change with respect to said first predetermined direction in a second direction orthogonal to said first direction, and for further providing signals ldel representative of said antenna\s desired line of sight angle with respect to said first predetermined reference in said first direction and signals ldaz representative of said antenna\s desired line of sight angle with respect to said first predetermined reference in said second direction; antenna drive means coupled to said twist reflector antenna means and coupled to said target sensor system means for positioning said antenna in said first and second directions according to said target sensor system signals; first angle sensor means coupled to said antenna drive means for providing signals byqp representative of the angular rate of change of said vehicle in a third direction with respect to a second predetermined reference; second vehicle rate sensor means coupled to said vehicle for providing signals ffy representative of the angular rate of change of said vehicle in a fifth direction orthogonal to said third and fourth directions, with respect to said second predetermined reference; and antenna control means coupled to said antenna drive means and adapted to receive said signals Kge, Kea, qp, fR, qy, bwldaz and ldel for providing signals in said track mode for controlling said antenna drive means rate of angular change bbKee-qp+2yfR) and for further providing signals in said track mode for controlling said antenna drive means angular rate of change yyKea-qy-2bfR) and for providing signals in said search mode for controlling said antenna drive means angular rate of change bbK(-∫(qp.-2fRydt+ldel-2b)-(qp-2fRyyK(-∫(fy+2bfR)dt+ldaz-2y)-(fy+2bfR)].