DE2251295A1 - PROCEDURES FOR FRIEND / FEE IDENTIFICATION - Google Patents

Description

P 72/5

Ma / Fs

received 4

ELTEO GMBH & CO., GESELLSCHAFT FÜR STRAHLIMGSTECHNIK, -6900 Heidelberg, Kurpfalzring 106

Procedure for friend / foe identification

With the "known" identification of friend / foe on radio technology Path is a selective query of the tracked target because of the limited possibility of bundling the radio waves not possible. The wide interrogation lobe is also too exposed to electronic countermeasures on the enemy side.

In DT-OS 2 026 020 there is also an on the distance measurement with the help of laser beams based proximity warning system for aircraft described. For this is a first Airplane with a laser transmitter, a laser receiver as well a display device, and a second aircraft with a reflector device for reflecting the laser radiation of the first aircraft equipped. Transmitter, receiver and the device indicating the distance over the transit time must matched to each other with regard to the wavelength used be.

Finally, although it is also known to use the laser beam as a pulse searchlight for selective vision, it is lacking So far, the properties of the laser have been used for friend / foe identification.

The invention specified in claim 1 is based on the object to ensure perfect identification of the target day and night by means of an exact target selection.

In the embodiment of the device according to claim 1, a targeted identification of an object with minimal disclosure of your own location »If the querying side is already with a laser rangefinder or a

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Laser pulse headlights and the opposite side with a headlight laser warning device are equipped, these devices can be used for the inventive method, so that the effort remains relatively low.

An embodiment of the invention is based on the drawing explained in more detail.

In Fig. 1, an armored vehicle 1 is indicated, which with a Laser rangefinder or a laser pulse searchlight. The laser beam 3, which is thus present in any case can be expanded to, for example, 2.5 x 2.5 mrad for the purpose of a complete target broadcast and then additionally can be used as a laser interrogation transmitter. -A quick pulse train A pulse train coding 4, which can be set in the coder 5, allows for example 10 to 20 pps.

The vehicle 6 to be identified has an interrogation receiver Equipped in the form of a headlight laser warning device 7, which, for example, in a manner not shown can be divided into twelve individual channels of 30 ° each and thus has a dog reception. Unless this device is present, it can be used as a laser response transmitter in a manner analogous to the transmitter. For this purpose, the Receiver laser transmitter diodes placed, which emit a coded response signal in the direction of the query. In such a case, the receiver delivers a symbolized by the arrow 8, the pulse train coding 4 of the laser interrogation transmitter 2 corresponding signal to a decoder 9 * where the same is checked and the test result of the crew in a display device 10 consisting, for example, of a rosette or a monitor. The arrow 11 symbolizes the command to be given afterwards whether to fire or not. With the help of a also in the vehicle 6 provided encoder 12, the coding of the response can be set, which is then transmitted via the laser transponder such as indicated by the arrow 13 - is returned to the querying vehicle 1. The latter receives the answer with the help of its laser design that looks in the same direction

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rangefinder 2, checks it in a decoder 14 for correctness and shows the crew in a display device 15 "whether it is your own or an enemy vehicle. The arrow 16 again symbolizes the command whether firing should be or not.

A variant of the response provides that a punk transmitter 17 ″ is used instead of a laser response transmitter finds. Here, the interrogating vehicle 1 receives the response signal 18 via a radio receiver 19 - the reference number 20 shows that the decoder 9 can also be addressed via radio!

Vehicles 1 and 6 must - if they belong to the same side - each with a laser interrogator 7 and a laser transponder 13. First this Measure ensures correct information and the even more important reaction in the case of itself within a few seconds processing query. A missing or wrong answer can lead to the destruction of the requested vehicle Have consequence. Laser interrogation receivers are shown in the drawing and laser transponders are only shown in vehicle 6 for the sake of clarity.

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Claims (7)

Claims received Method for friend / foe identification, characterized by the use of an in the vehicle (l) installed laser range finder or laser pulse headlight as an interrogator (2) and a laser interrogator (7) installed in the vehicle (1) and (6) and laser transponder (13) 2. The method according to claim 2, characterized by one of the interrogator (2) with adjustable Coding (4) emittable laser (3) 3. The method according to claim 1 and 2, characterized that the interrogation receiver (7) of the vehicle (6) received encoded laser beam (4) in one Decoder (9) and decoded by a laser transponder (13) is re-broadcast in a coded manner adjustable via a coder (12). 4. The method according to claim 1, characterized in that the from the vehicle (6) radiated back encoded laser beam is received and decoded by the receiver of the laser rangefinder (2). 5. The method according to claim I _1, characterized in that the query is carried out with a laser range finder or a laser pulse headlight and the response (18) with the aid of a radio transmitter (17). 6. The method according to one or more of the preceding claims, characterized in, that the display of the direction from which the query is made and the decodability on a rosette or through Reflection in a monitor takes place. 40981 8/0096 7. Method according to one or more of the preceding ones Claims characterized by the Possibility of combining this procedure with already existing fire! control systems. 40981 8/0096 Lee on the side