JP2930478B2 - Infrared guidance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infrared guidance device applied to a flying object flying at high speed.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS.

In FIG. 6, an infrared detector 2 is attached to the front of a casing 3 so as to face forward. A bowl-shaped infrared dome 2 is mounted in front of the infrared detection device 2. In front of the infrared dome 2, a conical infrared dome cover 5 that is separable along a generatrix is attached. Further, a signal processing device 4 connected to the infrared detecting device 2 is provided at a rear portion of the casing 3.

[0004] The body 3 is mounted on the front of a flying object (not shown).

In the above, when the flying object flies toward the target and approaches the target for a predetermined distance, the infrared dome cover 5 is separated by a signal from the signal processing device 4 (FIG. 7). After that, the infrared detection device 2 will fly toward the target while detecting the target.

[0006]

An object flying at a high speed is heated by friction with air to a high temperature. This phenomenon is problematic for flying objects that detect, guide, and hit the infrared radiation emitted by the target. That is, the heat of the infrared dome, which protects the infrared detecting device from the outside air, becomes high due to the heat and emits infrared rays by itself.
This is because infrared rays from the target are buried therein, and the detection performance deteriorates.

In the method of attaching a cover to prevent this, the infrared dome cover is separated near the target, but the scattering direction is not constant due to the influence of external pressure, and the infrared dome is likely to be damaged.

[0008]

The present invention employs the following means to solve the above-mentioned problems.

That is, as an infrared guiding device, a cylindrical housing having a front portion narrowed to an open end, an infrared detecting device mounted coaxially and forward on the front portion of the housing, a flat spherical type A casing that is partially cut out and covers the infrared detection device and is rotatably mounted around the short axis; and an infrared dome that is mounted in the cutout of the casing and has a shape before the cutout. When,
A rotating device around the short axis of the casing, wherein the casing is disposed such that the surface of the equator contacts the open end of the casing.

[0010]

In the above means, the equatorial portion of the casing is exposed at the open end of the casing, that is, the infrared dome is set in the casing. Thereafter, the flying object equipped with this device will fly toward the target. When approaching the target, the rotating device is activated by a predetermined signal, and the infrared dome that transmits infrared rays comes to the open end and stops. After that, the infrared detecting device is activated, the target ahead is detected, and the target flies.

In this manner, until the target is approached,
The infrared dome is prevented from becoming hot due to aerodynamic heating. Therefore, a clearer target can be detected without being affected by thermal noise.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is a front view, and FIGS. 4 and 5 are operation explanatory views. The parts described in the conventional example are assigned the same reference numerals, and the description thereof will be omitted. The parts related to the present invention will be mainly described.

In FIG. 1 to FIG. 3, the casing 3 is cylindrical.
The front part is narrowed, and the front end face is open end a. The infrared detecting device 1 is coaxially attached to the front of the casing 3 toward the front.

The casing 6 has a flat spherical shape and is arranged so as to cover the infrared detecting device 1. Further, a part of the equatorial portion of the casing 6 is cut off in a plane orthogonal to the long axis. Further, the infrared dome 2 having the shape of the cutout portion
However, it is installed instead of the notched part.

The casing 6 is attached via a rotating device 7 so as to be rotatable around the short axis 6. At this time, when the surface of the casing 6 is in contact with the open end a of the casing 3 and the infrared dome 2 is in front, the infrared dome 2 is arranged so as to be exposed to the outside from the casing 3.

In the above, before launching the flying object, FIG.
As shown in FIG. 7, the infrared dome 2 is set rearward.

Thereafter, the flying object equipped with the device flies toward the target, and when approaching the target, the rotating device 7 is activated by a predetermined signal, and the infrared dome 2 comes to the open end and stops. (FIG. 5). Thereafter, the infrared detecting device 1 is operated, and a target ahead is detected.

The rotation operation signal is output from the signal processor 4 based on the relationship between the target position information from the ground and the self-position calculated by the inertial navigation device contained therein.

In this way, until the target is approached,
The infrared dome is prevented from becoming hot due to aerodynamic heating. Therefore, a clearer target can be detected without being affected by thermal noise.

[0020]

As described above, according to the present invention, the infrared dome is used only when the target of the flying object is detected by infrared rays, so that a clear target can be detected. It also solves the problem of damaging the dome.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a front view of the embodiment.

FIG. 4 is an operation explanatory view of the embodiment.

FIG. 5 is an operation explanatory view of the embodiment.

FIG. 6 is a side view of a conventional example.

FIG. 7 is an operation explanatory view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infrared detecting device 2 Infrared dome 3 Housing 4 Signal processing device 6 Casing 7 Rotating device

Claims (1)

(57) [Claims] 1. A cylindrical body having a front end narrowed to an open end, an infrared detecting device mounted coaxially and forwardly on the front of the body, and a flat spherical equatorial part. Part is cut out and covers the infrared detection device, and is mounted rotatably around the short axis; an infrared dome mounted on the cutout part of the casing and having a shape before the notch; A rotating device around a short axis, wherein the casing is arranged so that an equatorial surface is in contact with an open end of the casing.