Device for processing location signals

FIELD: radio engineering.

SUBSTANCE: device has receiver, distance converter, synchronizer, azimuth and location angle transducer unit, indicator unit, TV distance transducer, TV coordinator unit, secondary processing unit and unit composed of two adders.

EFFECT: high accuracy in determining angular coordinates in optical visibility zone.

1 dwg

 

The invention relates to the field of radar technology and can be used in radio systems.

A device processing radar signals, described in the book Umetaliev. - M.: Radio system, High school, 1990, str. It is part of the radar and is able to determine the distance to objects in the visual field pattern of the antenna, regardless of its width. However, the accuracy of determining the angular coordinates depends on the antenna rotation.

A device processing radar signals described in the above-mentioned source on page 195, included in the single-band radar. With the help of receiver converts reflected from objects electromagnetic energy into electrical energy and release signals on respective characteristics. Next, the selected signals in the Converter range, which defines the distance to all objects in the field of view of the pattern regardless of its width in the form of temporary mismatches between pulses from the synchronizer and the moments of arrival of the reflected signals. The distance shown on the display together with the angular coordinate of the sensor's azimuth and elevation. However, the accuracy of the angular coordinates, including to places of interest in the optical zone is likely also depends on the antenna rotation.

Using the proposed device increases the accuracy of determining the angular coordinate in the optical zone visibility without introducing additional radar sites. This is achieved by the introduction of the television sensor range of the secondary processing, television coordinator and block of two adders, the first, second, third and fourth group of inputs of the first and second groups of outputs of the secondary processing respectively connected: with a group of outputs of the Converter range, with a group of outputs of the television sensor, with the first and second groups of outputs TV coordinator, with the first and second groups of inputs of the block of two adders, with the third and fourth group of inputs, and first and second groups of outputs respectively connected to the first and second groups of outputs of the block from sensor azimuth and elevation, and with the second and third group of inputs of the indicator.

In the drawing and in the text the following notation:

1 receiver;

2 - Converter-range;

3 - synchronizer;

4 - TV sensor range;

5 is a block secondary treatment;

6 is a block of two adders;

7 - indicator;

8 - TV coordinator;

9 is a block from sensor azimuth and elevation,

the first, second, third and even the fourth group of inputs, the first and second groups of outputs of the secondary treatment unit 5, respectively, are connected: with a group of outputs of the Converter range 2, with a group of outputs of the television sensor range 4, with the first and second groups of outputs TV coordinator 8, with the first and second groups of inputs of the block of two adders 6, with the third and fourth group of inputs, the first and second groups of outputs respectively connected to the first and second groups of outputs unit of the sensor azimuth and elevation 9 and the second and third group of inputs of the indicator 7, the first group of inputs of which are connected with the above group of outputs of the Converter range 2, having first and second inputs respectively connected to the output of receiver 1 with the output of the synchronizer 3.

The operation of the device is as follows.

Using receiver 1 converts reflected from objects electromagnetic energy into electrical energy and the selection signals characteristic of the expected objects. The selected signals in the Converter range 2, which defines the distance to all objects in the field of view of antenna directional diagram of the receiver in the form of temporary mismatches between pulses from the synchronizer 3 and the signals from the receiver 1. The value ranges enters the secondary unit is th processing 5.

An example of execution of the transducer range is represented, for example, in the book Vasin V.V. and Stepanov BN. "A reference book on radar", 1977, str. In the secondary treatment unit 5 also receives information about the distance to objects from the television sensor range 4 with two lenses separated by a baseline distance, field of view which is in the same direction with the directional diagram of the antenna of the receiver 1. In the secondary treatment unit simultaneously with the distance from the television sensor range comes azimuth and elevation coordinates with television coordinator 8. This is done by simultaneously determining range and angle coordinates simultaneous scanning of two television sweeps.

An example of a specific implementation of the television sensor range, which can operate in the infrared spectrum that presents, for example, in the patent author No. 2105994 called "Rangefinder"that determines the distance to all objects in the field of view of lenses that can be increased. An example of a specific implementation television coordinator presented, for example, in the book of badgers and other TV system aerial vehicles", 1979, str, where lowercase and personnel coordinates of selected objects correspond to the azimuth and plumes is the number of coordinates in the field of view of one of the television sensor. Moreover, the accuracy of determining the angular coordinate is higher than the radar. In the secondary treatment unit 5 compares the distances from the transducer range 2 and the television sensor range 4 and the identification information belonging to the same object, but different from each other in size, not exceeding a specific value. Such actions are the same, when accompanied by a range of moving objects. Thus, each azimuth and elevation coordinate of the object with the television coordinator 8 corresponds to a certain information about the distance from the transducer range 2. Therefore, after receiving information about the distance to the object from the transducer range 2, the secondary treatment unit 5 returns information about its azimuth and elevation coordinate in a block of two adders 6. And in the first adder unit 6 receives the azimuthal coordinate, and the second elevation. In the first and second adders receives information about the azimuth and an angle designated with a block of sensor azimuth and elevation 9 corresponding to the position of the Central axis of the antenna. However, information from the secondary treatment unit 5 may have a positive or negative value, depending on the location of the selected object relative to the coordinate of inate the Central axis of the antenna.

In summation of the above-mentioned azimuth and elevation coordinates of the two groups of outputs of the block of two adders 6, the indicator 7 to display the data received about the azimuth and elevation angles of all objects in the field of view of the television sensor range 4. Simultaneously with the angular data of an object is also provided in the indicator 7 and the data range of the Converter range 2.

An example of execution of the secondary processing 5 presents, for example, in the above-mentioned main counterpart. In the same source on str presents an example of the execution unit of the sensor azimuth and elevation 9.

Using the proposed device are provided accuracy characteristics over the angular coordinates in the absence of rotation of the antenna directional diagram.

The device can be used in systems of multi-tracking and search for the protection of objects, collision avoidance and air traffic control.

Device processing radar signals, consisting of a receiver, transducer range synchronizer block from sensor azimuth and elevation and indicator, where the receiver is connected to the first input of the Converter range, having a second input and a group of outputs respectively connected to the output of the synchronizer and the first is the group of inputs of the indicator, characterized in that you enter the television sensor range, TV coordinator, secondary treatment unit and a block of two adders, the first, second, third and fourth group of inputs of the first and second groups of outputs of the secondary processing respectively connected to the group of outputs of the Converter range, with a group of outputs of the television sensor, with the first and second groups of outputs TV coordinator, with the first and second groups of inputs of the block of two adders, with the third and fourth group of inputs, and first and second groups of outputs respectively connected to the first and second groups of outputs of the sensor unit azimuth and elevation, and with the second and third group of inputs of the indicator.



 

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