Shipboard C TV antenna st-x3r180

external dimensions	2.3m x2.3m x2.5m
weight	120Kg
packing	wooden case
Antenna diameter	1.80m
Antenna type	ring focus
VSWR	1.25
Receiving gain	35.5dBi@3.95GHz
Receiving frequency	3.70ghz ~ 4.20ghz
Polarization	linear polarization
Cross-polarization discrimination	axis 32dB (1dB point 30dB)
Side lobe (first)	-14db
Interface	WR75
stabilization mode	triaxial stabilization (azimuth, pitch, roll) + polarization adjustment
stability principle	inertial navigation attitude stability;Cone scanning extreme tracking;Adaptive temperature drift compensation algorithm;
Orientation	infinite rotation
Pitch	0 ~ 115 °
Roll	plus or minus 30 °
Polarization	+ 90 °
Maximum speed	60 ° / s (shaft)
Maximum acceleration	60 ° / s2
Stable accuracy	+ / – 0.2 °
Working environment temperature	– 40 ℃ ~ 85 ℃

The antenna has a built-in high-precision inertial navigation module to measure the attitude of the ship. The attitude stability algorithm with independent intellectual property rights is operated by DSP, which ensures that the antenna can be aimed at the target satellite in real time in any situation.In the aspect of target recognition, in order to improve the reliability of satellite signal recognition, a signal plus beacon recognition method is specially designed.In terms of electronic components, industrial-grade components are adopted to ensure the reliability of components (military-grade components can also be provided).The reliability of electrical components is guaranteed by long time high and low temperature aging test.
In terms of software, it adopts high-speed DSP calculation, built-in coordinate transformation module, PID stability module and other core modules, and its control frequency is greater than 500Hz.
Mechanical aspects, using the mechanical structure of the triaxial stability, ensure the control accuracy, stable platform of pointing accuracy of + / – 0.2 °).
When searching for a satellite, the elevation Angle of the target satellite is calculated according to the geographical position obtained by GPS, and the target is searched directly on the basis of triaxial stability, so the target can be acquired quickly.

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