RU44879U1 - DEVICE FOR TRANSFORMING ANGULAR MOVEMENT OF RADAR ANTENNA - Google Patents

Abstract

The utility model relates to structural elements of radar stations, in particular, to devices for converting an angle into discrete electrical signals associated with a geographic azimuthal coordinate, and can be used in radar systems for converting azimuthal information of a radar and orienting it in azimuth. The technical result of this utility model is to simplify the operation and reduce the time for orienting the radar when it is placed in both prepared and unprepared positions. This technical result is achieved in that in a device for converting the angular displacement of the antenna of a radar station, comprising serially connected sensor unit with an input for connecting the antenna shaft, an angular information converter, an adder and a strobe forming unit, as well as a rotation simulator, the output of which is connected to the second input an angular information converter, an indication unit, the input of which is connected to the output of the adder, and a code sensor are additionally introduced in series static navigation system, calculator and switch, the second input of which is connected to the output of the code sensor, and the output is connected to the second input of the adder.

Description

The utility model relates to structural elements of radar stations, in particular, to devices for converting an angle into discrete electrical signals associated with a geographic azimuthal coordinate, and can be used in radar systems for converting azimuthal information of a radar and orienting it in azimuth.

A device for converting the angular displacement of a radar antenna described in the invention according to USSR author's certificate No. 129123 [1], consisting of a sensor unit, a signal generator of the azimuthal binary code, a simulator of rotation of the antenna and a gate generator. The disadvantage of this device is the low accuracy of the radar orientation, as well as the fact that when orienting the radar, its antenna must be mounted on a previously known azimuth of a local object, i.e. the position at which the radar is installed must be prepared in advance, which in modern conditions is not always possible.

Another disadvantage of this device is the inability to automate the orientation process and, as a consequence, the large time spent on orienting the radar.

Of the known devices for converting the angular displacement of the radar antenna, the closest in technical essence to the proposed one is the prototype device for converting the angular displacement of the radar antenna according to the USSR copyright certificate No. 184203 [2], shown in Fig. 1 and containing a series of sensors 1 connected to the input for antenna shaft connection, angle converter

rotation simulator 3, display unit 6 and code sensor 7, the second input of the angle information converter 4 connected to the output of rotation simulator 3, the second input of adder 5 connected to the output of code 7 sensor, and the output of adder 5 also connected to the input of display unit.

The sensor unit 1 converts the angular displacement of the antenna shaft into azimuthal information in the form of two sequences of pulses: one pulse and 2 ⁿ pulses per revolution of the antenna shaft, where "n" is specified by the required angle conversion accuracy. From these pulse sequences, the angle information converter 4, which is a binary counter with an input signal switching circuit, generates an azimuthal binary code supplied to the adder 5, to the second input of which a binary code is received from the sensor code 7 of the azimuthal orientation correction. The azimuthal code, as amended, is supplied to the gate formation block 2, consisting of a combination of decoders of the code combinations of azimuthal information. The rotation simulator 3 consists of a pulse generator and a binary counter and generates signals similar to the signals of the sensor unit 1.

This device has a higher accuracy of orientation, but otherwise has the same disadvantages as the angular displacement conversion device described in the invention according to the USSR copyright certificate No. 129123.

The technical result of this utility model is to simplify the orientation operation and reduce the orientation time when placing the radar in both prepared and unprepared positions.

To achieve a technical result in a device for converting the angular movement of the radar antenna (prototype),

comprising a series of sensors connected to the input for connecting the antenna shaft, an angular information converter, an adder and a strobe forming unit, as well as a rotation simulator whose output is connected to the second input of the angular information converter, an indication unit, whose input is connected to the adder output, and a code sensor , an automatic navigation system, a calculator and a switch are connected in series, the second input of which is connected to the output of the code sensor, and the output to the second input of the adder.

The essence of the utility model is illustrated by the following description.

Figure 2 presents the structural diagram of the proposed device for converting the angular displacement of the radar antenna, where it is indicated:

1 - sensor block,

2 - block forming gates,

3 - rotation simulator,

4 - Converter angular information

5 - adder

6 - display unit,

7 - code sensor,

8 - automatic navigation system (ASN),

9 - calculator,

10 - switch.

The proposed device contains a series-connected sensor unit 1 with an input for connecting the antenna shaft, an angular information converter 4, an adder 5, a strobe forming unit 2, and a rotation simulator 3, the output of which is connected to the second input of the angular information converter 4, an indication unit 6, an input which is connected to the output

the adder 5, serially connected by the ASN 8, the calculator 9 and the switch 10, the output of which is connected to the second input of the adder 5, and a code sensor 7, the output of which is connected to the second input of the switch 10.

The device operates as follows.

When the antenna shaft rotates, the sensor unit 1 converts the angular displacement of the shaft into discrete information, which is a binary sequential n - bit code, where the number "n" is determined by the specified conversion accuracy.

These signals are fed to the first input of the transducer 4. At the second input of the transducer 4 from the simulator of rotation 3, the same signals are provided, which are necessary for the angular information transducer 4 to operate in the mode of simulating an azimuthal situation. Depending on the selected mode (operation - simulation), the angle information converter 4 carries out the switching of binary codes, and then synchronizes them with a setting pulse. From the output of the angular information converter 4, this code is fed to the first input of the n - bit adder 5. The latter can be performed, for example, according to the scheme given in [3] p. 198, Fig. 3.3.39. The binary correction code generated by either the code 7 sensor (only when manually orienting the radar at the prepared position), where “n” toggle switches, or ASN 8 and calculator 9 (at automatic radar orientation on both prepared and unprepared positions).

The output signals of the adder 5 are fed to the block forming gates 2, generating azimuthal gates of the radar, and to the input of the display unit 6, which can be used as an indicator of all-round visibility according to the scheme given in [3].

An automatic navigation system 8 can be performed, for example, in the form of a device described in [4] p. 185. When orienting the radar using ASN 8, information is received and processed from global GLONASS / GPS satellite systems, and no more than 3, 5 minutes after turning on the power, the true position of the antenna relative to the direction to the geographic North is displayed. The code message at the output of ASN 8 contains a large amount of information, as described in [4] on page 57. For its decryption, a calculator 9 is used, which in the simplest case can be performed according to the structural scheme described in [5] p. 65.

Switch 10 operates in two modes: ASN - manual. In automatic mode, the azimuthal correction arrives at the second input of the adder 5 from the series-connected ASN 8, calculator 9 and switch 10.

After turning on the rotation of the antenna, the angular information from the output of the adder 5, as well as the azimuthal strobes of the strobe forming unit 2 and the sweep of the indicating unit 6 are spatially “tied” to the true geographical coordinates, therefore, the radar using the device for converting the angular displacement of the antenna becomes azimuthally oriented.

Thus, the introduction of an ASN, a computer, and a switch with the above connections allows to significantly reduce the deployment time of the radar when placing it at an unprepared position, which dramatically increases the mobility of the radar and allows you to orient the antenna without human intervention, i.e. automatically.

Information sources.

1. "Device for converting the angle of rotation of the antenna." USSR author's certificate No. 129123, application No. 2232061 with priority of 02/10/1978, IPC G 08 C 9/00;

2. "Device for converting the angular movement of the radar antenna." USSR author's certificate No. 184203, application No. 3041778 with priority of 05/10/1982, IPC G 08 C 9/00;

3. "Microprocessor-based processing and display of information in control and communication systems" edited by I.E. Soloveichik, 1988

4. “GLONASS Global Satellite Radio Navigation System” edited by V.N. Kharisov, A.I. Perov, V.A. Boldin, Moscow IMSPR 1998

5. "Interfaces of data processing systems." A.A. Myachev, V.N. Stepanov, V.K. Scherbo, Moscow "Radio and Communications" 1989

Claims (1)

A device for converting the angular displacement of the antenna of a radar station, comprising a series-connected sensor unit with an input for connecting the antenna shaft, an angular information converter, an adder and a strobe forming unit, and a rotation simulator, the output of which is connected to the second input of the angular information converter, an indication unit, an input which is connected to the output of the adder, and a code sensor, characterized in that it further introduced sequentially connected automatic navigation system , a calculator and a switch, the second input of which is connected to the output of the code sensor, and the output to the second input of the adder.