JPH0784996B2 - Control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention mounts a phased array antenna tilted from the axis of a flying object so that the beam scanning angle range is asymmetrical about the axis. The present invention relates to a control device in which the biased beam scanning angle range and the function of roll control of a flying object are used together to apparently expand the beam scanning angle range and improve the ability to capture a target.

[Prior Art] FIG. 4 is a diagram showing a conventional control device.

In the figure, (1) is the flying body, (2) is the flying machine axis, (3) is the phased array antenna,
(5) is a beam scanning angle range, (6) and (6) 'are targets,
(7) is a transmitter, (8) is a receiver, (9) is a signal processing unit, (10) is a beam control unit, (12) is an auto pilot, and (13) is a steering device.

In the conventional type, the phased array antenna (3) is mounted perpendicular to the flight aircraft axis (2). The flying object radiates the transmitted wave generated by the transmitter (7) toward the target (6) within the beam scanning angle range from the phased array antenna (3) and the reflected wave from the target (6) to the antenna. The signal is received at (3) and the received signal is output to the receiver (8). The receiver (8) generates a target signal from the received signal and sends it to the signal processing unit (9). The signal processing unit (9) calculates and estimates information regarding the target motion from the input target signal, outputs a beam scanning angle command signal to the beam control unit (10), and outputs a guidance signal to the autopilot (12). The autopilot (12) calculates a steering signal from the guidance signal and outputs it to the steering device (13). In the conventional method, even if the calculation and estimation that the target (6) shifts to (6) ′ is beyond the beam scanning angle range, there is no way to handle it. It was However, if the beam scanning angle range can be made wider than the current one, the problem can be solved,
Many of the other antenna performances are degraded,
It was not possible to easily expand this range.

In other words, the conventional technology has a beam scanning angle range smaller than that of the gimbal mechanism antenna in order to maintain various performances related to transmission / reception of the phased array antenna above a certain level, and the target of high-speed / high-turnability is from this range. There was a high risk of removing it.

[Problems to be Solved by the Invention]

When the flying object tries to cope with a target of high speed and high turning performance, there is a high risk of locking off if the beam scanning range of the antenna is narrow. Therefore, ideally, it would be preferable if the beam scanning angle range could be expanded, but this cannot be expanded in a random manner because many other performances of the antenna deteriorate. Therefore, the conventional antenna has a narrower scanning angle range than the antenna of the gimbal mechanism, and the risk of the lock-off is high.

The present invention has been made to solve such a problem, and expands the beam scanning angle range without sacrificing other performances, and reduces the risk of locking off when dealing with high speed / high turning target. It is the one to try.

[Means for Solving the Problems]

The control device according to the present invention mounts the phased array antenna at an angle from the aircraft axis of the flying body, and makes the beam scanning angle range asymmetrical about the axis of the aircraft. Area and narrow area,
The projectile is roll-controlled by a roll controller so as to capture the target in this wide scanning angle range.

[Action]

In the present invention, a phased array antenna is mounted by inclining it from the axis of the flying body and appropriately controlling roll of the flying body.
The beam scanning angle range can be expanded and the risk of target lock-off can be reduced without degrading the antenna performance.

〔Example〕

1 to 3 are views showing an embodiment of the present invention. In FIG. 1, (1) is a flying body main body, (2) is a flying body axis, and (3) is a phased array. Antenna, (4) antenna axis, (5) beam scanning angle range, (6) and (6) 'target, (7) transmitter, (8) receiver,
(9) is a signal processing unit, (10) is a beam control unit, (11) is a roll control device, (12) is an auto pilot, and (13) is a steering device. (1) to (12) in FIGS. 2 and 3 correspond to the same reference numerals in FIG.

Here, an example is shown in which the target is trying to deviate from the narrow range of the beam scanning angle. In FIG. 1, the target (6) is captured in the beam scanning angle range (5) of the projectile.
The flying object inputs the reflected wave from the target of the radio wave radiated from the phased array antenna (3) to the target (6) by the antenna (3) and receives by the receiver (8). A signal processing unit (9) calculates or estimates a target motion from the received signal. The signal processing unit (9) allows the target (6)
Is calculated and estimated to move to (6) ', and as a result, it is determined that the target (6)' is out of the beam scanning angle range or has reached a level just before it is out of the beam scanning angle range, to the roll control device (11). The roll command signal is sent to the beam control section (10) in a direction of radio wave transmission in which the roll angle of the machine body is compensated. The roll control device (11), in response to a command signal from the signal processing unit (9), performs rolls relating to the roll rotation direction, angular velocity, and angle based on the target motion such as the rate of change of the target (6) to (6) ′. Generates a control signal and outputs it to the auto pilot (12). The auto pilot (12) receives the pitch / yaw motion control and the roll control signal, and outputs the steering signal to the steering device (13). The steering device (13), which receives the steering signal, steers the steering blade at a steering angle corresponding to the signal, and thus the flying body (1) rolls. FIG. 2 shows the state of 180 ° rolling from the state of FIG. 1, and the targets (6) and (6) ′ in FIG. 1 which are out of the beam scanning range of the flying object are shown in FIG. Captured well within the beam scan range.

In addition, FIGS. 1 and 2 show an example in which the antenna is tilted and the narrowed beam scanning range is compensated for by a widened range, but FIG. 3 shows the same operating principle of FIGS. 1 and 2. It is shown that a wide beam scanning range works effectively in an arbitrary direction.

[Advantages of the Invention] With the configuration described above, the present invention can expand the beam scanning range of a flying object and improve the tracking performance for a high-speed / high-turn target.

[Brief description of drawings]

1 and 2 are diagrams showing the configuration and operating principle of an embodiment of the present invention, FIG. 3 is a diagram showing an embodiment different from the examples shown in FIGS. 1 and 2, and FIG. FIG. 4 is a diagram showing a configuration of a conventional technique. In the figure, (1) is the body of the flying body, (2) is the axis of the flying body, (3) is the phased array antenna, (4) is the antenna reference line, (5) is the antenna beam scanning range,
(6) is the target, (7) is the transmitter, (8) is the receiver,
(9) is a signal processing unit, (10) is a beam control unit, (11) is a roll control device, (12) is an auto pilot, and (13) is a steering device. In the drawings, the same or corresponding parts are designated by the same reference numerals.

Claims (1)

[Claims] 1. A transmitter for irradiating a target with a transmission wave and a transmission signal, a phased array antenna for radiating the transmission wave toward the target and receiving a reflected wave from the target, and the antenna for receiving. A receiver that generates a target information signal from a received signal, a signal processing unit that generates a guidance signal and a beam scanning angle command signal from the target information signal, and a direction in which a transmission wave is emitted is controlled by the beam scanning angle command signal. The beam control unit, the roll control device that roll-controls the flying object so that the target does not fall outside the beam scanning range, and the motion of the flying object based on the roll control signal from the roll control device and the guidance signal from the signal processing unit. The above-mentioned phased array antenna is skipped by an auto pilot that generates a steering angle command signal to control and a steering device that drives a steering wing from the steering angle command signal. By mounting the body tilted with respect to the machine axis, a wide range and a narrow range can be generated around the machine axis in the beam scanning angle range, and the uneven distribution of the beam scanning range and the flying body can be roll-controlled. A control device that apparently expands the beam scanning angle range by using the function of