DME795 DME Ground Transponder

Brand:

Aerospace Industry organization

Category:

Aviation

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Additional information

INTRODUCTION

The DME Ground Station is a wide band navigation aid system which provides range information. It is compatible with all existing Airborne DME interrogators. The system is designed and manufactured to meet the requirements laid down in EUROCAE ED-57, RTCA DO-189 and ICAO Annex 10. In addition, all devices, material and tests are in accordance with above standards. The DME Ground Station is comprised of two sections: Transponder and Antenna. The DME Ground Station is fully solid state with state-of-the-art technology using reliable FPGA based digital control loop for transmitter pulse shaping. In order to achieve high reliability, the redundancy is considered in system architecture. The modularity of the system is the important criterion that decreases diagnostic time. This system has 252 channels from 962 to 1213 MHz frequency range. This system operates in two modes, “X” and “Y” with 200 nautical miles coverage and capability to handle 200 aircrafts simultaneously.

FEATURES

Built in Test
Extremely high system reliability thanks to full redundancy and low repair time
Simple maintenance and low life cycle costs
Fully solid-state microprocessor controlled dual beacon equipment
Modular Tuneless Solid State Power Amplifier
Proven, time-tested antenna technology;

EUROCAE and ICAO flight certified.

SPECIFICATIONS

High capacity system managing over 200 aircraft interrogators simultaneously
With both full local and remote, for PC control and status indication
Easy collocation with all types of VOR (DVOR) equipment.
User-friendly interface that allows easy full control of DME Ground Station System.
Supporting SNMP, UDP and TCP/IP

Accuracy: ±50 m

TRANSMITTER

Transmitter Frequency Range: 962 MHz to 1213 MHz
X - Channel Pulse Pair Spacing: 12 µs
Y - Channel Pulse Pair Spacing: 30 µs
Pulse Shape and Spectrum: According to ICAO Annex 10
Rise time: less than 3 µs (10% to 90%)
Fall time: 2.5 µs (90% to 10%)
Pulse Spacing: According to ICAO Annex 10
Peak Output Power: Max up to 1.5KW

ANTENNA

Antenna Gain: 8.0 dBi main beam
Gain, horizon: 6 dBi
Circularity: ± 1 dB max on horizon
Antenna Azimuth Coverage: Omni directional
Antenna Polarization: Vertical
VSWR: Less than 2 with respect to 50 ohm input.
Power Rating: 10kW input power with 4% duty cycle
Reply Delay: 50 µs nominal in X mode, 56 µs nominal in Y mode Programmable from 40 µs to 75 µs