JPS63238578A - Transmitter receiver - Google Patents

Abstract

PURPOSE:To easily constitute both transmission and reception systems for a radio wave and a light wave by providing a space part at the center position of an arrays antenna for the radio wave which is arranged in a plane, and arranging an optical system at and in front of the space part. CONSTITUTION:A signal which is the radio wave such as radar generated by a transmitter 3 is supplied to the array antenna 1 by a transmission/reception switch 2 and radiated in the space by plural radiation elements 11. A reflected signal from a target, on the other hand, travels in the opposite path from that in the transmission and is sent by the transmission/reception switch 2 to a receiver 4 and a signal processor 5 detects a target signal. A light wave such as infrared rays radiated from the target, on the other hand, is passed through the optical system 6 provided in front of the space part 10 in the center of the array antenna and converted by a detector 7 for the light wave into an electric signal. The light signal from the target is amplified by an amplifier 8 and a signal processor 9 detects the target signal. The optical system 6 is provided in front of the center part of the antenna 1, so the adjustment, maintenance, etc., of the optical system 6 such as alignment are easily performed. Further, the lens, etc., of the optical system 6 is a derivative and transmits the radio wave that the rear antenna 1 uses to eliminate adverse influence upon an antenna beam.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmitting and receiving device that uses both radio waves and light waves.

[Conventional technology]

Transmitting/receiving devices that use radio waves such as radar and infrared rays radiated from heating elements have been known for a long time, and these devices have both an all-weather target detection function using radio waves and a highly accurate target detection function using infrared rays. and can be widely used.

Therefore, such a device is characterized in that both functions can be used simultaneously or selectively, and it is desirable that the device be configured to fully satisfy this feature.

For this reason, Japanese Patent Publication No. 53-15094 (Japanese Patent Publication No. 59-4
No. 9554) as shown in the publication.

An antenna for transmitting and receiving radio waves such as radar has a space in the center and has a configuration in which a plurality of antenna elements are arranged in a planar manner, and an optical system that performs a target detection function using infrared rays is added to the space. Proposed.

[Problem that the invention seeks to solve]

In the conventional transmitting/receiving device as described above, the function of the light wave system is significantly reduced due to the restriction that the optical system must be housed within a predetermined size and shape. Conversely, if the dimensions of the space are increased in order to improve the functionality of the light wave system, the functionality of the radio wave system will be significantly reduced. In addition, since the optical system is installed in the central space of the antenna, there are many problems such as difficulty in adjusting and maintaining the optical system, etc., when installing two systems that operate on completely different frequency bands in parallel. was there.

This invention was made to solve this problem, and provides a transmitter/receiver that is suitable for simultaneous use and switching of radio waves and light waves with a simple configuration without deteriorating the functions of both radio wave and light wave systems. The purpose is to obtain.

[Failure to solve the problem]

The transmitting/receiving device according to the present invention has a space in the center of a radio wave array antenna arranged in one plane.

An optical system that transmits radio waves is provided in front of this space, and a light wave detector is arranged on the same axis as the optical system and in the space of the array antenna.

[Effect]

In this invention, providing an optical system that transmits radio waves in front of the central space of the radio wave array antenna facilitates adjustment and maintenance of the device, and also reduces the gain of the radio wave array antenna and reduces the side rope performance. The effects on the performance of radio wave systems, such as deterioration, can be minimized, and even if both radio wave and light wave systems are installed in parallel, the functional deterioration of both systems can be suppressed.

〔Example〕

FIG. 1 and FIG. 2 are diagrams showing one embodiment of the present invention. In the figure, (1) is an array antenna composed of multiple radiating elements αυ and feeding circuit α2, (2) is a transmitter/receiver switch, (3) is a transmitter, (4) is a receiver, and (5) is a signal processing (6) is an optical system installed in front of the space α1 formed in the center of the array antenna (11), and (7) is a light wave detector installed in the array antenna (space Ql of 11). , (8) is an amplifier, and (9) is a signal processor.

Radio wave signals such as radar are generated by the transmitter (3).

The signal is supplied to the shear antenna (1) by the transmitter/receiver switcher (2) and radiated into space. Conversely, the reflected signal from the target.

The signal is passed through the reverse route to the transmission path, and is sent to the receiver (41) by the transmission/reception switch (2), and the target signal is detected by the signal processor (5).

On the other hand, infrared-only light waves are radiated from the target.

The light passes through an optical system (6) provided in front of the central space αG of the array antenna, and is converted into an electrical signal by a light wave detector (7). Of course, the light detected by the light wave detector (7) may be visible light, infrared light, or ultraviolet light, and in either case, optical information from the target can be detected. The optical signal from the target detected by the light wave detector (71) and converted into an electrical signal is amplified by the amplifier (8) and sent to the signal processor (9).
Detection of the target signal is performed.

Since the optical system (6) is provided at the front of the center of the array antenna (1), adjustments such as axis alignment and maintenance of the optical system (6) can be easily performed. In addition, since the lenses and the like constituting the optical system (6) are usually dielectrics, they transmit the radio waves used by the array antenna (1) located behind this optical system (6), which has an adverse effect on the antenna beam. , gain reduction and sidelobe increase can be reduced.

Moreover, since the radio wave system and the light wave system function independently of each other and there is little mutual interference, there are great practical benefits.

In the example shown in FIG. 1, the central space of the array antenna (11) and the array antenna (1) are circular.

It is necessary that the optical system (6) be located at the center of the array antenna (11), and it does not necessarily have to be circular in shape, but can also be configured in a polygonal shape.

In addition, in the above explanation, the light waves detected by the light wave detector (7) not only receive light waves directly radiated from the target, but also receive reflected light from the target emitted from a light transmitter installed at another position. It may also be one that receives light.

〔Effect of the invention〕

As described above, according to the present invention, the optical system is rearranged in front of the space provided in the center of the array antenna for radio waves arranged in one plane, and the detector for light waves is arranged in the space. With this simple configuration.

This has the effect of providing a transmitter/receiver that can operate both radio wave and light wave systems in parallel without deteriorating their full functionality.

[Brief explanation of drawings]

FIGS. 1 and 2 are diagrams showing an embodiment of a transmitting/receiving device according to the present invention. In the figure, (1) is an array antenna, and (2) is a transmitter/receiver switch. (31 is a transmitter, (4) is a receiver, (5) is a signal processor, (6) is an optical system, (7) is a light wave detector, (8) is an amplifier, and (9) is a signal processor. Ql is a space, αυ is a radiating element, and Z is a power supply circuit. In Figure 1, the same or corresponding parts are designated by the same reference numerals.

Claims (1)

[Claims] an array antenna having a space in the center and having a plurality of radiating elements arranged in a planar manner; a transceiver connected to the antenna for transmitting and receiving radar signals; and a transmitter/receiver connected to the antenna and provided in front of the space of the antenna. an optical system that transmits radio waves transmitted through the
A transmitting/receiving device comprising: a detector disposed on the same axis as the optical system and in the space of the antenna to detect light waves received via the optical system.