MULTIBEAM PROFILING SONAR with Optional Internally Integrated Motion Reference Unit & Sound Velocity Sensor

The new DT101Xi Multibeam Profiling Sonar (i.e. Multibeam Echo Sounder) is a single instrument integrating the sonar, motion reference unit (MRU), and sound velocity sensor into one sleek and compact unit. The DT101Xi requires only one cable for operating all three sensors and is a portable solution for any survey. Compatible with the DT100 SIR (Sensor Interface Relay) power supply/timing box, simply connecting a dual antenna GNSS/GPS receiver is all that is required to perform bathymetric surveys.
Brochure

Key Features

Automatic reception, archiving and processing of data from NOAA HRPT and Metop AHRPT polar-orbiting satellites.

Optional USB interface module, additional LRD-100 digital multi-mode receiver and XRIT Ingester software to also allow reception of GOES LRIT and COMS-1 LRIT data between satellite passes, or continuously with an optional dedicated LRIT antenna.

Optional LRD-200B receiver to also allow reception of FengYun-3 L-Band, plus GOES LRIT/HRIT and COMS-1 LRIT between satellite passes, all with one receiver.

Optional L/S-band feed/LNB to allow S-Band DMSP reception.

Will only require firmware and software updates to support LRD.

Optional temperature monitoring with tracking lockout.

Proven, robust, reliable hardware and software, with installations worldwide in all climates, temperatures and environments.

Modular construction for easy maintenance and future upgrades.

Comprehensive hardware and software diagnostics at all levels.

Descriptions

1.2m and radome-enclosed 1.5m antenna options are available for land-based ground stations. Both provide continuous tracking of satellites with no “cone of silence” (data loss at high elevations).

The Dartcom XPA dual-axis rotator controller with PID function and closed-loop feedback gives excellent pointing accuracy and smooth satellite tracking. A high-speed RS-232/RS-422 serial data link allows the ingest PC to control the rotator and provide status information and diagnostics.

The reflector is a prime focus aluminium parabolic dish finished in matt white paint (RAL 9010). An integrated feed/downconverter (IFD) is mounted at the focal point in a hermetically sealed unit.

The 1.5m antenna allows future upgrade to receive X-Band EOS data from Terra, Aqua, Suomi NPP, JPSS-1 and FengYun-3A/B/C.

1.2m parabolic dish and rotator
The 1.2m antenna has a 0.38 F/D ratio and 24.4dBi gain to achieve a system G/T of better than 2.6dBK at 1.7GHz and 5° elevation, and a bit error rate of better than 1:106 from 3.5° elevation.

The dish is mounted on the rotator using a counter-weighted aluminium frame assembly. The rotator is a compact unit with a separate housing for the power supply and controller which is mounted on the pedestal.

The whole dish and rotator assembly is mounted on a galvanised steel pedestal for fixing to a suitable concrete base or steel structure.

1.5m radome-enclosed parabolic dish and rotator
The 1.5m antenna has a 0.36 F/D ratio and 26.0dBi gain to achieve a system G/T of better than 4.3dBK at 1.7GHz and 5° elevation, and a bit error rate of better than 1:106 from 2° elevation.

The dish is mounted on the rotator using a counter-weighted aluminium frame assembly. The rotator is a compact unit with a separate housing for the power supply and controller which is mounted on the pedestal.

The dish and rotator assembly is mounted on a zinc plated, powder coated steel pedestal and enclosed in a two-part (plus base) composite radome with an inspection hatch on the bottom or side. The radome can be fixed to a suitable concrete base or steel structure.

1.5m active-stabilised marine antenna
This antenna is designed to track polar-orbiting satellites on moving vessels using a state-of-the-art active-stabilised X-Y pedestal to compensate for pitch, roll and yaw. It has continuous axis movement to eliminate cable wrap problems without slip-rings or rotary joints. Together with the pedestal’s high speed and accuracy this ensures no “cone of silence” (data loss at high elevations).

The antenna has a 0.35 F/D ratio and 26dBiC gain (S-band 28dBiC) to achieve a system G/T of better than 4.3dBK at 1.7GHz and 6.7dB/K at 2.252GHz, both at 5° elevation, and a bit error rate of better than 1:106 from 2° elevation.

The reflector is a 1.5m diameter prime focus aluminium parabolic dish finished in light grey paint. An integrated feed/downconverter (IFD) is mounted at the focal point in a hermetically sealed unit.

The dish and pedestal assembly is mounted inside a weather-tight glass fibre radome and base with access hatch.

The dish, pedestal assembly and antenna control unit (ACU) are mounted inside a weather-tight composite radome with a hatch in the base or side. The ACU provides fully automatic control of the pedestal with an advanced stabilisation algorithm. Full diagnostics and maintenance facilities are available via the ingest PC.

The equipment rack is located below decks and contains the receiver rack, ingest PC, UPS and network switch.

This antenna is CE certified and has been designed to meet or exceed military standard (MIL-STD) specifications.

The receiver rack is supplied as standard with a single LRD-100 digital multi-mode receiver to provide reception of NOAA HRPT and Metop AHRPT data.

If continuous LRIT reception is also required, an additional LRD-100 receiver and USB interface module can be fitted, together with a dedicated antenna and XRIT Ingester software.

Alternatively a single LRD-200B digital multi-mode receiver can be supplied to provide HRPT, AHRPT and FengYun-3 L-Band reception, with LRIT reception between satellite passes.

If DMSP reception is required, an additional USB interface can be fitted to the receiver rack. However LRIT reception is then not possible unless a separate Dartcom USB LRIT receiver is supplied.

To support the proposed JPSS LRD service the digital multi-mode receivers will require a firmware upgrade, but apart from that the receiver rack is LRD ready.

Features
19” 4U high Eurocard rack.
Plug-in modules for easy maintenance and upgrades.
Desk or rack mount.
USB connection for data, rack control and GPS receiver.
RS-232/422/485 connection for rotator control, or optionally via USB if serial ports are not available on the ingest PC.

Modules
Multi-mode receivers and LNB power supplies module containing up to two digital multi-mode receivers (one as standard).
HRPT USB interface module.
AHRPT/LRD USB interface module.
Optional DMSP or LRIT USB interface module.
USB hub and serial communications module containing 7-port USB hub, USB serial adaptors and RS-232/422/485 rotator interface.
GPS receiver module.
Switch mode rack power supply module.

Land-based antenna specifications

1.2m antenna1.5m antenna
Bit error rate1:106 from 3.5° elevation1:106 from 2° elevation
Azimuth range0° to 359.9° (minimum)0° to 359.9° (minimum)
Elevation range0° to 180° (minimum)0° to 180° (minimum)
Azimuth rate10°/second (±10%)48°/second (±10%)
Elevation rate10°/second (±10%)10°/second (±10%)
Mechanical tolerance±0.15° azimuth
±0.15° elevation
±0.15° azimuth
±0.15° elevation
Tracking accuracy±0.1°±0.1°
Temperature–20°C to +60°C operational–20°C to +60°C operational
(–40°C with optional heater)
Wind speeds85km/h (46kt) operational
145km/h (78kt) survival
185km/h (100kt) operational
240km/h (130kt) survival

Integrated feed/downconverter specifications

Feed:
    Beamwidth3dB at 80°
10dB at 150°
    Gain+4.5dBi
    PolarisationRight-hand circular
Input filter:
    Insertion loss0.3dB maximum
    Bandwidth120MHz maximum
Overall:
    Noise figure1.2dB typical
    Gain60dB minimum
    Converted bandwidth50MHz typical
    Input range1682–1710MHz
    IF output117–145MHz

Marine antenna specifications

Pedestal:
    StabilisationActive, with gyro sensors for pitch, roll and yaw rates
    Azimuth rangeNo limit (continuous)
    Elevation range–10° to 190°
    Pitch rate±15° in 8 seconds
    Roll rate±30° in 8 seconds
    Yaw rate±80° in 50 seconds
    Turn rate10°/second
    Total weight180kg approx
Radome:
    Height1.98m approx
    Diameter1.96m approx
Environment:
    Wind speeds185km/h (100kt) operational
240km/h (130kt) survival
    Temperature–10°C to +70°C operational
(–40°C with optional heater)
    Design specifications:
    EMI/RFIMIL-STD-461
    VibrationMIL-STD-167-1
    ShockMIL-STD-901
Power requirements:
    Voltage115/230V AC @ 50/60Hz
    Power consumption1000VA typical

Receiver rack specifications

Operating temperature0°C to +50°C
Storage temperature0°C to +70°C
Humidity30% to 70% non-condensing
EMC emissionsEN61000-6-4:2007 A1
EMC immunityEN61000-6-2:2005
Electrical safetyLVD 2006/95/EC
EN60950-1:2006
Dimensions (W×H×D)450×180×455mm including connector projections
Weight14.5kg approx
Power requirements110–240V AC @ 50–400Hz
Power consumption150VA
Wild heat100W

Digital multi-mode receiver specifications

LRD-100LRD-200B
Signal input
range
–90dBm to –20dBm–90dBm to –20dBm
IF
conversion
Direct 70MHz, up to 50Msps, 10-bit resolutionDirect 70MHz, up to 50Msps, 10-bit resolution
IF bandwidthProgrammableProgrammable
Supported
symbol rates
0.1–3.5Msps0.1–3.5Msps
Demodulator
modes
BPSK, QPSK, PSKBPSK, QPSK, PSK, 8PSK, 16QAM
BPSK/QPSK
performance
BPSK/QPSK within 1dB of theoretical, 0.5dB typicalBPSK/QPSK within 0.4dB of theoretical, 0.2dB typical
Convolution
decoding
Viterbi, rate ¾Viterbi, rates ½ and ¾
RF inputsSimulator or signal, selectableSimulator or signal, selectable
Outputs50Ω TTL clock and NRZ data50Ω TTL clock and NRZ data
DisplayLCD, 16-character × 2 lineLCD, 16-character × 2 line
Control
interface
RS-232 serial via USB serial adaptorRS-232 serial via USB serial adaptor