Onboard satellite communication system with dual-mode and dual-frequency band
A satellite communication system and dual-band technology, which is applied in the field of aviation equipment research, can solve problems such as difficulty in meeting the needs of transoceanic flight operations, and achieve the effect of ensuring service continuity, ensuring service quality, and reducing service costs
Inactive Publication Date: 2018-02-16
CETC AVIONICS
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Problems solved by technology
The ChinaSat 16 satellite communication system has the characteristics of high bandwidth and high transmission rate, which can guarantee the service quality of flights in densely populated areas in China, but it is difficult to meet the global flight requirements of transoceanic routes
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[0020] The invention provides a dual-mode and dual-band airborne satellite communication system, which can switch between the two satellite systems, and realize the use of ChinaSat-16 which can provide higher bandwidth and transmission rate in the coverage area of ChinaSat-16. The six-satellite communication system switches to the Inmarsat Ka or Ku satellite system in areas not covered by ChinaSat's sixteen satellites, thereby expanding the coverage of the airborne satellite communication system based on ChinaSat's sixteen-satellite system, realizing global coverage network services, and satisfying Requirements for the use of mainline aircraft flying across regions and countries.
[0021] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condi...
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The invention discloses an onboard satellite communication system with dual-mode and dual-frequency band. The system comprises an onboard satellite communication antenna, a radio frequency unit, a data unit, a modulation and demodulation unit and a special module for an aircraft, wherein the onboard satellite communication antenna is used for radiating and receiving electromagnetic waves; the radio frequency unit is used for converting frequency; the data unit is used for managing power supply to the onboard satellite communication antenna, controlling and monitoring direction turning of the onboard satellite communication antenna, and controlling and managing the radio frequency unit; the modulation and demodulation unit is used for performing intermediate frequency-base band conversion,signal modulation and demodulation, coding and decoding, encryption and decryption, satellite protocol processing, and interface and data processing; the special module for the aircraft is used for storing related parameters needed by initialization and running of the modulation and demodulation unit; the modulation and demodulation unit supports two different satellite communication protocols. According to the system provided by the invention, the problem that coverage of the onboard satellite communication system based on a zhongxing No.16 is scarce is solved and global coverage is achieved;the satellite communication system which is applicable to two frequency bands and two systems by using a single piece of equipment is achieved, and thus global coverage is achieved.
Description
technical field [0001] The invention relates to the field of aviation equipment research, in particular to a dual-mode and dual-band airborne satellite communication system. Background technique [0002] With the vigorous development of the civil air transport industry, the number of my country's fleet and the rapid growth of air transport volume have put forward higher requirements for the existing ground-air communication technology. On the one hand, air-ground communication technology greatly affects airline operation efficiency, aircraft health management, and status monitoring. On the other hand, with the development of information technology, airlines and passengers have higher and higher demands for high-speed, broadband, and real-time information communication between air and ground. The traditional aviation communication system is limited by factors such as insufficient communication rate, narrow bandwidth, and high cost, so that there are still a large amount of v...
Claims
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Login to View More IPC IPC(8): H04B7/185
CPCH04B7/18508H04B7/18543
Inventor 王洪全刘天华马俊康欧阳承曦
Owner CETC AVIONICS