85V6-A VEGA 3-D ELINT COMPLEX 58

Igor Peretyagin

Director General of Spez-Radio Research and Production Association, D. Sc. (Technology)

Orion is designed to operate in conjunction with the 85V6-A electronic reconnaissance station or autonomously in EW
and air defense units.

he 85V6-A Vega 3-D ELINT station is designed to operate in electronic warfare (EW), air defense and other units. It can also be used in the early warning, air traffic control, electronic environment monitoring, and jammer locating systems.

Vega detects, identifies, classifies and tracks up to 100 ground, sea and air targets by the emissions of their electronic facilities.
The standard configuration of the 85V6-A station comprises three target acquisition, direction-finding and analysis stations, SOPA 85V6-A ORION, and a control post, 85V6-A.

SOPA 85V6-A Orion mobile automatic direction-finding and electronic signal analysis station

The Orion stations are deployed in the field at a distance of up to 30 km from one another. The control post is normally located together with one of the stations.

Vega complex operation

The target bearing and parametric data are transmitted from the Orion stations to the control post over data channels, where locations of targets are determined by a triangulation method and their paths are drawn. Target locations and paths are then presented on an electronic map of the area.

False trajectories are excluded via the applied software by parametric identification of target bearings. Provision is also made for periodic checkout of the station's equipment and recording of the results of its tests.

The Orion mobile automatic station detects, takes bearings of, and identifies ground, sea and air targets by sensing their electronic emissions.

The Orion station features a fast response achieved through the use of monopulse direction-finding methods and a wide-band acousto-electronic Fourier transform processor.

The high degree of sensitivity and automation enable Orion to intercept momentary electronic emissions and detect composite signals of time-frequency structure and jamming signals.

To identify the sources of electronic emissions and their platforms, the measured vectors of target signal parameters are compared with information contained in the database. In the basic (circular scan) operating mode the station takes bearings of the sources of electronic emissions and measures signal vectors.

Information is supplied to the control post and distributed among other users every 6 to 10 s.

Provision is made for manual pointing of the antenna towards the emitting object and its subsequent automatic tracking.

The station draws power either from a built-in diesel-driven electric generating set or from an industrial line.

**Basic Characteristics**
Operating frequency band, GHz	0.2 to 18.0
Momentary reception band, MHz	500
Frequency resolution, MHz	1.0
Measuring accuracy: pulse duration, ms pulse repetition period, ms	0.1 1.0
azimuth within the range, deg: 0.2 to 2.0 2.0 to 18.0	1.0 to 2.0 0.2
Target detection range (H = 10 km), km,	min 400
Number of targets: designated to users cataloged	up to 100 up to 1,000
Maximum azimuth scan rate, deg/s	180