JPH02279995A - Control device - Google Patents

Abstract

PURPOSE:To extend the beam-scanning range and improve in the efficiency of following a fast flying fast gyrating target by mounting a phased array antenna on a projectile with an inclination from its body axis, by forming a beam-scanning angle ranging asymmetrically around the body axis, and by controlling the roll of the projectile. CONSTITUTION:A phased array antenna is mounted on a projectile with an inclination from its body axis. A target 6 is picked up in a range 5 of a beam-scannng angle of the projectile. A single-processing device 9 calculates and presumes the projectile to fly to the target 6; if the projectile is judged to be mixing the target, the signal- processing device 9 transmits to a beam-control device 10 a signal respecting the direction of radiowave transmission compensated for the roll angle of the flight. A roll control device 11 according to a command signal from a signel-processing device 9 produces a roll-control signal respecting the rolling direction, angular velocity, and angle of the roll on the basis of targeted motion such as a rate of change to the target 6'. A autopilot 12 inputs signals for controlling the pitch, yaw, and roll, and outputs steering signals to the steering device 13. The projectile 1 rolls so that a widened range compensates a narrowing of the beam-scanning range due to inclination of the antenna.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a beam scanning angle range that is asymmetrical about the aircraft axis by mounting a phased e-array antenna inclined from the aircraft axis of the flying body. This invention relates to a control device that uses this biased beam scanning angle range in combination with a function for controlling the roll of a flying object to apparently expand the beam scanning angle range and improve the ability to capture a target.

[Conventional technology]

FIG. 4 is a diagram showing a conventional control device.

In the figure, (1) is the flyball body, (2) is the flywheel plate axis, (3) is the phased array antenna, and (5) is the flyball plate axis.
) is the beam scanning angle range, (6) and t61 are the target, (7)
is the transmitter.

(8) is a receiver, (9) is a signal processing unit, and 00 is a beam control unit.

aZ represents an autorot), (11 represents a steering device).

In the conventional model, the phased array antenna (3) was mounted perpendicularly to the flying body axis (2).

The flying object sends the transmitted waves generated by the transmitter (7) towards the target (6) within the beam scanning angle range using a phased array ψ.
The antenna (3) emits radiation, the reflected wave from the target (6) is received by the antenna (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 section (9). The signal processing unit (9) calculates and estimates information regarding the target motion from the input target signal, outputs a beam control unit α0 heavy beam scanning angle command signal, and sends a guidance signal to the steering device a:1 via the autopilot α3. Output. In the conventional method.

Even if it were calculated and estimated that the target (6) would shift to j6f, there was no way to deal with it if it exceeded the beam scanning angle range. However, although the problem could be solved if the beam scanning angle range could be made wider than the current one, this range could not be easily expanded because many of the other performances related to the antenna would deteriorate.

In other words, in order to maintain the performance related to transmission and reception of phased array antennas above a certain level, conventional technology has a beam scanning angle range that is smaller than that of gimbaled antennas, and targets with high speed and high turning ability can be targeted within this range. There was a high risk of it being removed.

[Problem to be solved by the invention]

When a flying object attempts to target a high-speed, high-turning target, there is a high risk of lock-off if the antenna's beam scanning range is narrow. Ideally, therefore, it would be desirable to be able to widen the beam scanning angle range, but this cannot be done casually because many of the other performances of the antenna would deteriorate. Therefore, the scanning angle range of conventional antennas is narrower than that of antennas with gimbal mechanisms, and the risk of lock-off described above is low.

This invention was made to solve this problem, and it expands the beam scanning angle range without sacrificing other performance, and eliminates the risk of lock-off when dealing with high-speed, high-turning targets. The aim is to reduce the The control device according to the present invention is equipped with a 7-sided array antenna tilted from the axis of the flying body.

By making the beam scanning angle range asymmetric around the aircraft axis, the scanning angle range will be wide and narrow from the aircraft axis, and the flying object will be able to capture the target within this wide scanning angle range. Roll control is performed by a roll control device.

[Effect]

In this invention, the phased array antenna is mounted at an angle from the axis of the flying body, and the flying body is appropriately controlled in roll.

The beam scanning angle range can be expanded and the risk of target lock-on can be reduced without degrading the performance of the phased array antenna.

〔Example〕

Figures 1 to 3 are diagrams showing one embodiment of the present invention, in which (1) in Figure 1 is the main body of the flying bowl, (2) is the axis of the flying body, and (3) is the 7 aided array. ·antenna.

(4) is the antenna axis, (5) is the beam scanning angle range, (6
) and (6f is the target, (7) is the transmitter, (8) is the receiver,
(9) represents a signal processing unit, H represents a beam control unit, 011 represents a roll control device, Saba represents an autopilot, and αJ represents a steering device. (1) to α2 in FIGS. 2 and 3 correspond to the same symbols in FIG. 1.

Here, an example will be shown in which the target is about to deviate from a narrow beam scanning angle range. In FIG. 1, the target (6) is captured within the beam scanning angle range (5) of the flying object.

The flying object inputs the reflected waves from the target of the radio waves irradiated from the phased array antenna (3) to the target (6) through the antenna (3) and receives them at the receiver (8). The signal processing unit (9) calculates or estimates the movement of the target from the received signal. Target (6) by signal processing unit (9)
As a result, it calculates and estimates that 6f will shift to +61, and as a result, if it is determined that 6f is out of the beam scanning angle range, or has reached the level just before it goes out, beam control sends a roll command signal to the roll control device α1. A signal related to the transmission direction of radio waves that compensates for the roll angle of the aircraft is sent to part a1. The roll control device aυ is controlled by a command signal from the signal processing section (9).

A roll control signal regarding the roll rotation direction, angular velocity, and angle based on the target movement such as the rate of change of target (6) to (6r) is generated and output to the autopilot az.

Autopilot a2 controls pitch and yaw motion,
It inputs a roll control signal and outputs a steering signal to the steering device o:1. The steering device αJ inputting the steering signal steers the steering blade to a rudder angle commensurate with the signal, so that the flying object (1
) rolls. Figure 2 shows a state in which the target was rolled 181f from the state shown in Figure 1, and the target +61. (6f is captured well within the beam scanning range in FIG. 2).

In addition, although Figures 1 and 2 show an example in which the antenna is tilted to compensate for the narrowed beam scanning range with a wider range, Figure 3 uses the same operating principle as in Figures 1 and 2. This shows that the widened beam scanning range is effective in any direction.

〔Effect of the invention〕

The present invention can expand the beam scanning range of a projectile having one or more of the above-described configurations, and can improve tracking performance for high-speed, high-turning targets.

[Brief explanation 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 example shown in FIGS. 1 and 2, and FIG. The figure is a diagram showing the configuration of a conventional technique. In the figure, (1) is the flying bowl body, (2) is the flying body axis, (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, +IQ+ is a beam control unit, αυ is a roll control device, az is an autopilot, and αJ is a steering system. In the two figures, the same or corresponding parts are designated by the same reference numerals.

Claims (1)

[Claims] a transmitter that generates a transmission wave and a transmission signal to irradiate the target;
A phased array antenna that emits a transmitted wave toward a target and receives a reflected wave from the target, a receiver that generates a target information signal from the received signal received by the antenna, and a guidance signal that is generated from the target information signal. A signal processing section that generates a beam scanning angle command signal, a beam control section that controls the direction in which the transmitted wave is radiated using the beam scanning angle command signal, and a roll control section of the flying object so as not to remove the target from the beam scanning range. an autopilot that generates a steering angle command signal that controls the motion of the flying object based on the roll control signal from the roll control device and a guidance signal from the signal processing section; By mounting the above-mentioned phased array antenna at an angle with respect to the aircraft axis of the flying object, the beam scanning angle range is made to have a wide range and a narrow range around the aircraft axis. A control device characterized in that the beam scanning angle range is apparently expanded by using both the biased distribution of the beam scanning range and the function of controlling the roll of the flying object.