Direction-finger without upper cover
Distortion (1) and fields superposition (2)
of receiving channels compensated for by
a processing scheme to calculate spherical coordinates
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Purpose
Fixing of laser-induced target illumination and determination of angular coordinates of laser sources.
The direction-finger serves for fixing Nd-glass and ytterbium lasers. The direction-finder makes it possible to detect both a single pulse and continuous radiation. Recognition is made by their spatial-temporal characteristics. Information on the target position given in spherical coordinate system is transferred in real time to display with update rate of 50 Hz.
The direction-finder contains 4 receiving channels installed in a circle with a spacing of 900 and turned to 350 about a vertical. Consequently, the device has an all-around looking in azimuth and overlaps most of the upper hemisphere (except for a zenith zone).
Spectral, spatial, amplitude and temporal recognitions are implemented by this direction-finder.
| Technical data |
| FOV in azimuth | 360o |
| FOV in angle of elevation | -5...+75o |
| Angular resolution | 1o |
| Number of receiving channels | 4 |
| Number of registered and tracking targets | up to 16 |
| Length of time for information update | 20 ms |
| Data presentation | serial code
(RS-232/485) |
| Spectral range for operation without filters | 320...1100 nm |
| Operating wavelength | 1060±10 nm |
| Noise equivalent to exposure for pulses from1ns to 2 ms long | <2õ10-8 W/cm2 |
| Noise equivalent to irradiance for repetitively-pulsed and continuous radiation | <10-8 W/cm2 |
| Supply voltage | 12±2 V or 24±4 V |
| Power consumption | <10 W |
| Overall dimensions | Ø150õ100 mm |
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