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0.9m Mid profile STOM system

System composition

1. Antenna feed sub system: Prime focus parabolic antenna ( the reflector is carbon fiber material),corrugated horn, Rx-Tx duplexer and filter etc.    

2. Servo control sub-system: AZ,EL,POL motor ,servo driver.  

3. Digital tracking sub-system: Inertial navigation system, GPS/BD(optional ),beacon receiver, AZ,EL .POL angle sensor, main control board etc.  


System feature

1. The antenna adopts carbon fiber material with light weight, high gain and low side lobe.  

2. Fast initial pointing.  

3. Auto tracking of polarization, the low frequency slip ring and high frequency joint are used to assure continuous rotation of azimuth of antenna.    

4. High automation, the work can be performed automatically by only selecting the tracked satellite without manual intervention. 


Technical data


Name

0.9m Mid profile STOM system 

Feed form

Prime focus 

Type

SOMA-900-A

Equivalent aperture

0.9m

POL

Linear

Frequency

Rx12.2512.75 GHz

Gain

Rx≥38.4+20lgf/12.50dBi

Tx14.0014.50 GHz

Tx≥39.5+20lgf/14.25dBi

Port isolation

Rx-Tx ≥ 85 dB

VSWR

Rx≤1.5

Tx-Rx ≥ 40dB

Tx≤1.5

Across polarization isolation

≥35dBaxial

1st side lobe 

AZ ≤ -14 dB

Interface form

RxN-50K TxWR75

Power capacity

100 W

Steady type

2 axis

Radome insertion   loss 

≤ 0.3dB

Motion range

AZ

360° continuous   

Revolution

AZ

≤ 60 °/s

Angular acceleration

AZ

≥ 200   °/s2

EL

10°~90°

EL

≤ 60 °/s

EL

≥ 200   °/s2

POL

± 90°

POL

≤ 40 °/s



Auto acquisition time

Initial acquisition time  

≤ 3min

Tracking accuracy

≤ 0.5dBR.M.S

Blockage recovery   time  Blockage 20min

≤ 5 s

Pointing method

Automatic

Controller type 

19inch 1U case 

Positioning mode

GPS+BD

Operating   temperature 

-40°C+60°C

Operating wind velocity   

21 m/s

Storage temperature 

-50°C+70 °C

Survival wind velocity   

35 m/s

Humidity requirement

95%20 °C

Protection grade 

IP65

Power

220V/AC50Hz

System power consumption   

≤300 Wexclusing   BUC

Selection of BUC

Recommend to use  MITECWavestream series   

Selection of LNB

Norsat HS1057B

System weight

≤ 75Kgexcluding BUC, LNB, case, packaging and   accessories etc