Aquazond Doppler Log LD-75
The Doppler log LD-75 is an absolute acoustic Doppler log designed to measure the velocity of a vessel relative to the seabed at distances from 4.5 meters up to 1000 meters. When the distance to the seabed exceeds 15 meters, the device can also measure velocity relative to the water layer.
It is suitable for installation on both surface ships and various types of underwater vehicles.
The LD-75 is a software and hardware system designed for real-time marine object positioning. Upon request, the software can be equipped with a module for autonomous trajectory calculation.
Specifications | |
| Maximum operating depth | up to 1000 m |
| Velocity measurement range | 0,01m/s to 5m/s |
| Operating frequency | 75 kHz |
| Minimum distance to the seabed | 4.5 m |
| Nominal operating range | up to 900-1000 m |
| Antenna system type | two independent phased antenna arrays (each with 4 tilted beams, beam width <3°) |
| Beam angle offset | two orthogonal beams tilted at 30° from the vertical |
| Measurement range for horizontal velocity components | -10 knots to 20 knots |
| Distance measurement range to the seabed | 5 m to 1200 m |
| Magnetic сompass | available |
| Magnetic сompass measurement range | 0° to 360° |
| Pitch and roll sensor | available |
| Accuracy of horizontal velocity vector measurement | ±0.5% ±0.5 cm/s at distances greater than 8 m from the seabed ±1% ±1.25 cm/s at distances from 4 m to 8 m from the seabed |
| RMS error at the minimum distance from the seabed | ±1.25 cm/s |
| Instrumental error in pitch and roll measurement | ±0.5° |
| Pitch and roll angular resolution | 0.01° |
| Magnetic heading accuracy | ± 2.5° |
| Magnetic heading angular resolution | 1° |
| Communications | Fast Ethernet |
| External power | 220V AC / 300V DC |
| Power | 1400 W |
| Construction | Stainless steel/Titanium |
| Antenna system weight (excluding frame) | 65 kg |
| Electronics unit weight | 45 kg |
| Weight in air | no more than 22 kg |
| Temperature | -5°C … +35°C |
| Warranty period | 12 months |
347913, Rostov Region, Taganrog
Bolshaya Bulvarnaya St., 13-11, Russian Federation
Bolshaya Bulvarnaya St., 13-11, Russian Federation
tel: +7(8634) 47-77-20
Fax: +7(8634) 33-46-62
Fax: +7(8634) 33-46-62
info@aquazond.ru