Key features:
The satellite communication modem is the core component of the airborne satellite communication terminal. The airborne satellite communication modem developed by the company has the ability to automatically detect the rotor and transmit the data rotor gap, and is in the leading position among similar products in China. The time occupied by the burst transmission of data is short, and the probability of being blocked by the rotor of the helicopter is low. By rationally designing the frame structure and retransmission mechanism, the transmission efficiency can be improved under the premise of ensuring the reliability of communication.
On-board modems range in data rates from 32kbps to 50Mbps and use a variety of forward error correction (FEC) methods, including Turbo Product Code (TPC) and LDPC.
The device adopts modular hardware, which can support a variety of different data interfaces according to the requirements of service loads, and can adapt to various application scenarios.
Customized and developed according to different models and different business needs. Depending on the caliber, the weight varies from 8kg~25kg.
Airborne dynamic mid-pass antenna parameter table
Antenna metrics |
Antenna size
|
0.3m
|
0.45m
|
0.6m
|
WORKING FREQUENCY
|
TRANSMIT: 14.25~14.5GHZ, RECEIVE: 12.25~12.75GHZ
|
RF Gain
|
RX: 31.5dB
|
RX: 32.5dB
|
RX: 35.5dB
|
Send：32.5dB
|
Send：33.5dB
|
Send：36.5dB
|
Cross-polarization
| ＞30dB | ＞30dB | ＞30dB |
Voltage-resident ratio
| ＜2.0 | ＜2.0 | ＜2.0 |
Polarization method
|
Linear polarization
|
Linear polarization
|
Linear polarization
|
Angular velocity
|
Azimuth 40°/s
|
Azimuth 40°/s
| Azimuth 40°/s
|
Pitch angle 40°/s
|
Pitch angle 40°/s
|
Pitch angle 40°/s
|
Polarization angle 25°/s
|
Polarization angle 25°/s
|
Polarization angle 25°/s
|
Angular acceleration
|
Azimuth 40°/s²
|
Azimuth 40°/s²
|
Azimuth 40°/s²
|
Pitch angle 40°/s²
|
Pitch angle 40°/s²
|
Pitch angle 40°/s²
|
Polarization angle 25°/s²
|
Polarization angle 25°/s²
|
Polarization angle 25°/s²
|
G/T | 8dB/K | 11dB/K | 14dB/K |
Power supply
| ＜450w 28v DC | ＜500w 28v DC | ＜550w 28v DC |
Ambient temperature
|
Operating：-45~55℃
|
Operating：-45~55℃
|
Operating：-45~55℃
|
Storage：-45~85℃
|
Storage：-45~85℃
|
Storage：-45~85℃
|
Physical size
| 450×350mm | 600×430mm | 700×800mm |
Weight
| 16KG | 18KG | 20KG |