General Dynamics Model 950 Antenna Control System

General Dynamics Model 950 Antenna Control System

The Model 950 Control Systems can be used with almost any limited motion antenna for precision satellite tracking applications.

• Tracking, Pointing, and Acquisition modes
• Ideal for single AC motor (per axis) antennas
• Single, Dual, or Multi-speed antenna motor drives
• Stable or inclined GEO targets
• Flexible receiver options
• Designed to minimize site cabling

System
The system comprises an Antenna Control Unit (ACU), Tracking Receiver Unit (TRU) and a Power Drive Unit (PDU) which are linked via dedicated Ethernet connections. This provides flexibility in locating the key system components, allows for variable separation distances and provides immunity to electrical ground plane transients.

Tracking Accuracy - Optrack
Normally better than 5% of the receive beamwidth in winds of 30 mph gusting to 45 mph, satellite inclination of up to 15º and signal scintillation of up to 2 dB.

Pointing Accuracy
Normally better than 0.05º RMS in winds of 30 mph gusting to 45 mph. This includes all drive train errors, but excludes structural errors between the position transducers and RF beam.

Features of the ACU are:
• Optrack, which provides high performance tracking of stable or inclined orbit satellites with an adaptive, self-learning ephemeris modeling mode
• Easy touch screen operation
• Informative display with full text color readouts
• Extensive diagnostic monitoring and test capabilities
• Antenna and satellite simulators
• Supervisory Control Link (Ethernet; TCP/IP or RS-232/422).
• Fully software field upgradable

Portable Maintenance Unit

The Portable Maintenance Unit (PMU) provides manually commanded, bi-directional control of all axes. It has the following features:

• Hand held ruggedized unit with a 10-ft pendant cable and 40-ft extension cable for convenient local operation at the antenna

• Backup means of moving antenna and is ACU independent

• Four line, 20 character display for axis positions, tracking signal strength, and scrolling status messages

• Modes include position jog and Hi/Lo speed

• Optional weather proof access junction boxes at convienient antenna locations

• Enable/Disable per axis

InterStellar Technologies Co., Ltd. is one of the pioneers of satellite application system service company in China. Taking “ Service Creates Value” as the company image, Interstellar has grown up to be a comprehensive satellite solution service provider with 15 years working experience together with Chinese Satellite market and customer.

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