CN210725346U - Dual-mode airborne satellite communication modulation-demodulation terminal - Google Patents
Dual-mode airborne satellite communication modulation-demodulation terminal Download PDFInfo
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- CN210725346U CN210725346U CN201922429569.0U CN201922429569U CN210725346U CN 210725346 U CN210725346 U CN 210725346U CN 201922429569 U CN201922429569 U CN 201922429569U CN 210725346 U CN210725346 U CN 210725346U
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Abstract
The utility model discloses a bimodulus machine carries satellite communication modem terminal, including control management unit, network switching unit, modem 1, modem 2, electrical unit, radio frequency switch, radio frequency shunt, control management unit is used for managing entire system, network switching unit exchanges the output to modem 1 and modem 2's data stream, and control management unit also handles through network switching unit to the management data stream of each unit, modem 1 is used for modulating and demodulating communication system 1's signal, modem 2 is used for modulating and demodulating communication system 2's signal. The utility model provides the high equipment integration for satellite terminal can operate under two kinds of satellite communication systems, has effectively solved the roaming problem of current machine year satellite terminal, is favorable to satellite communication technique at aviation internet technical development and popularization.
Description
Technical Field
The utility model relates to a satellite communication technical field specifically is a bimodulus machine carries satellite communication modem terminal.
Background
With the rapid development of the civil aviation industry and the release of relevant policy and regulations, the demand of users on broadband communication in the air and navigation processes is higher and higher, in recent years, with the successful launching of a plurality of high-flux satellites and the construction of a ground ATG network, airborne broadband communication is technically feasible, the cost expectation is greatly reduced, and once an airborne satellite communication system is installed in a large amount, the aviation Internet is rapidly developed.
In the existing broadband satellite communication system, the core component is a modulation and demodulation terminal, and due to the technical barriers of manufacturers of various main airborne modulation and demodulation terminals, the airborne satellite communication modulation and demodulation terminal can only communicate with satellite communication gateway stations produced by the same manufacturer.
In the aspect of airborne application, because flight routes are generally long and are limited by policy and regulations of various countries, a plurality of satellite coverage areas need to be spanned in the flight process, different satellite operators need to be accessed to realize roaming, and at the moment, the existing airborne modem terminal cannot meet the requirement.
The existing onboard satellite modem terminal can only be used for selecting satellite systems of gateway stations of the same manufacturer, is limited by the modem terminal and cannot realize roaming in different satellite systems
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bimodulus machine carries satellite communication modem terminal has improved the equipment integration level for satellite terminal can operate under two kinds of satellite communication systems, has effectively solved the roaming problem of current machine year satellite terminal, is favorable to satellite communication technique at aviation internet technical development and popularization, with the problem of proposing in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a dual-mode airborne satellite communication modulation and demodulation terminal comprises a control management unit, a network switching unit, a modem 1, a modem 2, a power supply unit, a radio frequency switch and a radio frequency shunt circuit;
the control management unit is used for managing the whole system;
the network switching unit switches and outputs data streams of the modem 1 and the modem 2, and the control management unit processes the management data streams of each unit through the network switching unit;
the modem 1 is used for modulating and demodulating signals of the communication system 1;
the modem 2 is used for modulating and demodulating signals of the communication system 2;
the power supply unit is used for converting the input aviation power supply into DC24V and supplying power to equipment;
the radio frequency switch is used for selecting output intermediate frequency signals of the modem 1 and the modem 2;
the radio frequency shunt circuit is used for shunting and outputting the received intermediate frequency signals to the modem 1 and the modem 2.
Preferably, the control management unit is composed of a CPU chip, a memory chip, a Flash chip, an SSD module, and other interface chips, and runs an embedded Linux operating system.
Preferably, the network switching unit uses a Broadcom network switching chip.
Preferably, the control management unit is responsible for loading parameters of the modem 1 and the modem 2, judging the satellite communication system where the modem is currently located, selecting the corresponding modem to work, and enabling the other modem to be in a standby state.
Preferably, an ARINC600 standard MCU chassis is used.
Preferably, the case structure is designed in a plug board manner.
Preferably, the system operation comprises the steps of:
s1: starting up;
s2: controlling the management unit to load a program;
s3: judging a satellite system used;
s4: the modem is determined.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses two kinds of modems of integration switch over according to the satellite communication system of difference to realize the flight in-process, the aircraft roams to another kind of satellite network from a satellite network, adopt ARINC6004MCU machine case, the integration level of equipment has been improved, the equipment integration level has been improved, make satellite terminal can operate under two kinds of satellite communication systems, the problem of current machine year satellite terminal roaming has effectively been solved, be favorable to satellite communication technique at aviation internet technical development and popularization.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 shows the operation flow of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: a dual-mode airborne satellite communication modulation and demodulation terminal is shown in figure 1 and comprises a control management unit, a network switching unit, a modem 1, a modem 2, a power supply unit, a radio frequency switch and a radio frequency shunt circuit;
the control management unit is composed of a CPU chip, a memory chip, a Flash chip, an SSD module and other interface chips, an embedded Linux operating system is operated for managing the whole system, the control management unit is responsible for loading parameters of the modem 1 and the modem 2, judges the current satellite communication system, selects the corresponding modem to work, and the other modem is in a standby state;
the network exchange unit selects a Broadcom network exchange chip, exchanges and outputs data streams of the modem 1 and the modem 2, and controls the management unit to process the management data streams of each unit through the network exchange unit;
the modem 1 is used for modulating and demodulating signals of the communication system 1;
the modem 2 is used for modulating and demodulating signals of the communication system 2;
the power supply unit is used for converting the input aviation power supply into DC24V and supplying power to equipment;
the radio frequency switch is used for selecting output intermediate frequency signals of the modem 1 and the modem 2;
the radio frequency shunt circuit is used for shunting and outputting the received intermediate frequency signals to the modem 1 and the modem 2.
As shown in fig. 2, the system operation includes the following steps:
s1: starting up;
s2: controlling the management unit to load a program;
s3: judging a satellite system used;
s4: the modem is determined.
The ARINC600 standard MCU case is adopted, the integration level of the equipment is improved, and the case structure adopts a plug board type design, so that the integration level of a single machine and the unit replaceability are improved.
The working principle is as follows: the power supply unit converts the input aviation power supply into DC24V to supply power for equipment, then the equipment is started, the management unit is controlled to load position information, a modem is firstly started to be connected with the network according to the position, meanwhile, the radio frequency two-path modem 1 and the modem 2 can receive signals sent by the front end, and the modem equipment for establishing the network connection is adjusted according to the signal-to-noise ratio of the received signals until a network link is established; after the network link is established, the control management unit detects whether the configuration management data is updated or not and determines whether the data is updated or not, when the modem 1 is in a working mode, the modem 2 (including a front-end antenna system) is in a standby mode, when the airplane flies to a switching area, the modem 2 (including the front-end antenna system) is switched to a tracking mode, a receiving antenna is used for tracking a target, the data link is still in the modem 1 at the moment, the network link is switched according to an instruction, the radio frequency switch is switched from the modem 1 to the modem 2 at the moment, the network connection of the modem 2 is established, if the network connection is successful, the modem 1 (including the front-end antenna system) is in the standby state, the method for switching the modem 1 by the modem 2 is similar, and the switching time.
The utility model discloses two kinds of modems of integration switch over according to the satellite communication system of difference to realize the flight in-process, the aircraft roams to another kind of satellite network from a satellite network, adopt ARINC6004MCU machine case, the integration level of equipment has been improved, the equipment integration level has been improved, make satellite terminal can operate under two kinds of satellite communication systems, the problem of current machine year satellite terminal roaming has effectively been solved, be favorable to satellite communication technique at aviation internet technical development and popularization.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A dual-mode airborne satellite communication modulation-demodulation terminal is characterized in that: the system comprises a control management unit, a network switching unit, a modem 1, a modem 2, a power supply unit, a radio frequency switch and a radio frequency shunt circuit;
the control management unit is used for managing the whole system;
the network switching unit switches and outputs data streams of the modem 1 and the modem 2, and the control management unit processes the management data streams of each unit through the network switching unit;
the modem 1 is used for modulating and demodulating signals of the communication system 1;
the modem 2 is used for modulating and demodulating signals of the communication system 2;
the power supply unit is used for converting the input aviation power supply into DC24V and supplying power to equipment;
the radio frequency switch is used for selecting output intermediate frequency signals of the modem 1 and the modem 2;
the radio frequency shunt circuit is used for shunting and outputting the received intermediate frequency signals to the modem 1 and the modem 2.
2. The dual-mode airborne satellite communication modem terminal of claim 1, wherein: the control management unit is composed of a CPU chip, a memory chip, a Flash chip, an SSD module and other interface chips, and runs an embedded Linux operating system.
3. The dual-mode airborne satellite communication modem terminal of claim 1, wherein: the network exchange unit selects a Broadcom network exchange chip.
4. The dual-mode airborne satellite communication modem terminal of claim 1, wherein: and the control management unit is responsible for loading parameters of the modem 1 and the modem 2, judging the current satellite communication system, selecting the corresponding modem to work, and enabling the other modem to be in a standby state.
5. The dual-mode airborne satellite communication modem terminal of claim 1, wherein: an ARINC600 standard MCU chassis is adopted.
6. The dual-mode airborne satellite communication modem terminal of claim 5, wherein: the case structure adopts a plug board type design.
7. The dual-mode airborne satellite communication modem terminal of claim 1, wherein: the system operation comprises the following steps:
s1: starting up;
s2: controlling the management unit to load a program;
s3: judging a satellite system used;
s4: the modem is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922429569.0U CN210725346U (en) | 2019-12-30 | 2019-12-30 | Dual-mode airborne satellite communication modulation-demodulation terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922429569.0U CN210725346U (en) | 2019-12-30 | 2019-12-30 | Dual-mode airborne satellite communication modulation-demodulation terminal |
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| Publication Number | Publication Date |
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| CN210725346U true CN210725346U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083687A (en) * | 2019-12-30 | 2020-04-28 | 北京悦航天翼电子信息技术有限公司 | Dual-mode airborne satellite communication modulation-demodulation terminal |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083687A (en) * | 2019-12-30 | 2020-04-28 | 北京悦航天翼电子信息技术有限公司 | Dual-mode airborne satellite communication modulation-demodulation terminal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220714 Address after: 101520 room 106, building 2, yard 8, Xingsheng South Road, Miyun District, Beijing (centralized office area of business center) Patentee after: China Unicom hangmei Network Co.,Ltd. Address before: 1501, building 1, No. 46, dongzhimenwai street, Dongcheng District, Beijing 100027 Patentee before: Beijing yuehangyi Electronic Information Technology Co.,Ltd. |