CN111953404A - Communication positioning system and method based on skyton, iridium satellite and Beidou satellite - Google Patents
Communication positioning system and method based on skyton, iridium satellite and Beidou satellite Download PDFInfo
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- CN111953404A CN111953404A CN202010817912.3A CN202010817912A CN111953404A CN 111953404 A CN111953404 A CN 111953404A CN 202010817912 A CN202010817912 A CN 202010817912A CN 111953404 A CN111953404 A CN 111953404A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
Abstract
The invention discloses a communication positioning system based on an skynet, an iridium satellite and a Beidou/GPS satellite, which comprises a communication positioning triple antenna device, a satellite positioning triple antenna device and a satellite positioning triple antenna device, wherein the communication positioning triple antenna device is used for providing a signal receiving and transmitting function of the skynet antenna and the iridium satellite/Beidou/GPS antenna; the antenna interface is used for communicating the communication positioning three-in-one antenna device and the communication positioning equipment for positioning and signal transmission; the communication positioning equipment is used for providing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning, configuring a signal receiving and sending rule, controlling the signal transmission of the communication positioning triple antenna device through the antenna interface, and realizing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning based on the signal receiving and sending rule; the antenna device with the three-in-one functions of antenna communication, iridium satellite communication and Beidou/GPS positioning is constructed, and the communication positioning function is realized through an antenna interface; the underwater communication positioning device is beneficial to making up the deficiency of insufficient communication coverage or reliability when the communication positioning device is installed on the underwater device, reduces the technical difficulty and cost of installation and construction, and is suitable for popularization.
Description
Technical Field
The invention relates to the technical field of satellite communication positioning, in particular to a communication positioning system and method based on skyton, iridium and Beidou satellites.
Background
The existing sky leads to satellite communication antenna, iridium communication antenna, big dipper GPS orientation antenna and is independent 3 antennas, is connected with the antenna interface of sky leads to communication module, the antenna interface of iridium communication module, the antenna interface of big dipper GPS orientation module through 3 radio frequency cables respectively. Because the weight and the quantity of underwater equipment such as an underwater glider, an AUV (autonomous underwater vehicle) and the like have very strict requirements on the weight and the quantity of external equipment, communication and positioning antennas and radio frequency cables of the underwater glider and the AUV need to have the water pressure prevention and seepage prevention capability under water and the requirements on watertight penetration. The more the number of the external antennas is, the heavier the weight is, the more difficult the technical problems are, the higher the cost is, and even the normal operation is seriously influenced. Meanwhile, underwater equipment such as an underwater glider, an AUV and the like is sometimes a necessary choice for solving the problem of communication coverage or the problem of communication reliability and installing weather communication, iridium satellite communication and Beidou/GPS positioning.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a communication positioning system and method based on skyton, iridium and Beidou satellites, which are beneficial to reducing the technical difficulty and cost of underwater equipment in installing communication positioning equipment.
In order to achieve the purpose, the technical scheme of the invention comprises the following steps:
a communication positioning system based on Tiantong, Iridium and Beidou satellite comprises
The communication positioning triple-antenna device is used for providing a signal receiving and transmitting function of an antenna and an iridium satellite/Beidou/GPS antenna;
the antenna interface is used for providing an antenna interface to communicate the communication positioning triple antenna device and the communication positioning equipment for positioning and signal transmission;
the communication positioning equipment is used for providing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning, configuring a signal receiving and sending rule, controlling the signal transmission of the communication positioning triple antenna device through the antenna interface, and realizing the functions of antenna communication, iridium satellite communication and Beidou/GPS positioning based on the signal receiving and sending rule.
Furthermore, in the communication positioning system based on skywalking, iridium satellite and Beidou satellite, the communication positioning triple-antenna device comprises
The antenna is at least used for receiving the antenna communication signal and transmitting the output signal of the communication positioning equipment;
the iridium satellite/Beidou/GPS antenna is at least used for receiving iridium satellite communication signals, receiving Beidou/GPS positioning signals and transmitting output signals of the communication positioning equipment;
and the duplexer is used for providing a communication isolation channel so as to synthesize the receiving signals of the skynet antenna and the iridium satellite/Beidou/GPS antenna into input signals, transmit the input signals to the communication positioning equipment through the antenna interface, and send the signals output by the communication positioning equipment through the antenna interface to a corresponding antenna for transmission.
Further, foretell communication positioning system based on sky leads to and iridium satellite and big dipper satellite, communication positioning three-in-one antenna device still includes trinity antenna physical channel for construct the accommodation space setting the sky leads to the antenna iridium satellite/big dipper GPS antenna and duplexer.
Further, in the above communication positioning system based on skytom, iridium satellite and Beidou satellite, the communication positioning device includes:
the first communication positioning control module is used for controlling iridium satellite communication and Beidou/GPS positioning;
the second communication positioning control module is used for controlling the communication and Beidou/GPS positioning;
the main control module is used for controlling the first communication positioning control module and the second communication positioning control module to work; configuring a signal receiving and sending rule, transmitting an external input signal to the first communication positioning control module and the second communication positioning control module, and controlling the working signals of the first communication positioning control module and the second communication positioning control module to be processed so as to be sent to the communication positioning three-in-one antenna device for transmission;
and the first radio frequency switch is used for switching two paths of signals under the control of the main control module.
Further, the communication positioning system based on skyton, iridium and Beidou satellite is characterized in that: the first communication positioning control module comprises:
the first Beidou/GPS positioning module is used for carrying out Beidou/GPS positioning;
the iridium communication module is used for carrying out iridium communication;
the first control module is used for controlling the first Beidou/GPS positioning module and the iridium communication module to work, transmitting an external input signal to the iridium communication module or the first Beidou/GPS positioning module according to the signal receiving and transmitting rule, and controlling the working signal of the iridium communication module or the first Beidou/GPS positioning module to be processed under the driving of the main control module so as to be sent to the communication positioning three-in-one antenna device for transmitting;
and the second radio frequency switch is used for switching two paths of signals under the control of the first control module.
Further, in the above communication positioning system based on skytom, iridium satellite and Beidou satellite, the second communication positioning control module includes:
the second Beidou/GPS positioning module is used for carrying out Beidou/GPS positioning;
the antenna communication module is used for carrying out antenna communication;
the second control module is used for controlling the second Beidou/GPS positioning module and the antenna communication module to work, transmitting external input signals to the second Beidou/GPS positioning module and the antenna communication module according to the signal receiving and transmitting rules, and controlling working signals of the second Beidou/GPS positioning module and the antenna communication module to be processed under the driving of the main control module so as to be transmitted to the communication positioning three-in-one antenna device for transmitting;
and the third radio frequency switch is used for switching two paths of signals under the control of the second control module.
Further, in the communication positioning system based on skytechnical commission, iridium satellite and Beidou satellite, the signal receiving and transmitting rules configured by the main control module include:
the first radio frequency switch is controlled to receive an input signal of the communication positioning three-in-one antenna device and distribute the input signal to the first communication positioning control module or the second communication positioning control module, the antenna communication module, the iridium communication module or the corresponding Beidou/GPS positioning module is controlled to be started, and the received input signal is processed to execute a communication or positioning function; wherein the input signal is: when the communication positioning triple-antenna device is in a receiving state, a path of signal is synthesized by signals received by an antenna and an iridium satellite/Beidou/GPS antenna through a duplexer;
and controlling working signals of the first communication positioning control module and the second communication positioning control module to be output to a duplexer of the communication positioning triple-antenna device through the first radio frequency switch, and transmitting signals through an antenna or an iridium satellite/Beidou/GPS antenna.
The invention also provides a communication positioning method based on the skyton satellite, the iridium satellite and the Beidou satellite, which comprises the following steps:
constructing a communication and positioning three-in-one antenna device integrating skynet, iridium satellite communication and Beidou positioning into a whole, so as to provide the signal receiving and transmitting functions of a skynet antenna and an iridium satellite/Beidou/GPS antenna, and carry out signal transmission through an antenna interface;
setting a function switching rule for performing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning through switching of a radio frequency switch;
and configuring a signal receiving and sending rule, wherein the signal receiving and sending rule is used for correspondingly transmitting an input signal sent by the communication positioning three-in-one antenna device to the antenna communication module, the iridium communication module or the Beidou/GPS positioning module when performing antenna communication, iridium communication and Beidou/GPS positioning according to the function switching rule, and controlling to process a working signal of the antenna communication module, the iridium communication module or the Beidou/GPS positioning module so as to send the working signal to the communication positioning three-in-one antenna device for transmitting.
Further, in the above communication positioning method based on skyton, iridium satellite and Beidou satellite, a communication positioning triple antenna device integrating skyton, iridium satellite communication and Beidou positioning is constructed to provide the signal receiving and transmitting functions of skyton antenna and iridium satellite/Beidou/GPS antenna, and to transmit signals through an antenna interface, which specifically includes:
setting an antenna for at least receiving antenna communication signals and transmitting output signals of the communication positioning equipment;
an iridium satellite/Beidou/GPS antenna is arranged and at least used for receiving an iridium satellite communication signal, receiving a Beidou/GPS positioning signal and transmitting an output signal of communication positioning equipment;
the duplexer is used for providing a communication isolation channel, synthesizing the receiving signals of the skynet antenna and the iridium satellite/Beidou/GPS antenna into input signals, transmitting the input signals to the communication positioning equipment through the antenna interface, and sending the signals output by the communication positioning equipment through the antenna interface to the corresponding antenna for transmission.
Further, in the above communication positioning method based on skyton, iridium satellite and Beidou satellite, construct a communication positioning triple antenna device that is trinity of skyton communication and Beidou positioning to be used for providing the signal receiving and dispatching function of skyton antenna and iridium satellite/Beidou/GPS antenna, and carry out signal transmission through an antenna interface, still include:
set up trinity antenna physical channel for construct the accommodation space setting sky leads to antenna, iridium satellite/big dipper GPS antenna and duplexer.
Compared with the prior art, the invention has the beneficial effects that:
in the communication positioning system and method based on the skyton, the iridium and the Beidou satellite, an antenna device with three functions of skyton communication, iridium communication and Beidou/GPS positioning is constructed, and a skyton communication signal, an iridium communication signal and a Beidou/GPS positioning signal can be synthesized and sent to communication positioning equipment through an antenna interface, so that the skyton communication function, the iridium communication function and the Beidou/GPS positioning function are realized; when being favorable to for being at underwater devices such as glider, AUV under water installation communication positioning device, compensate communication coverage not enough or the not powerful not enough of reliability when only the communication of heaven leads to, and the communication of heaven leads to, iridium star communication and big dipper GPS location only need one set of antenna assembly, three sets of antenna assembly that need reach underwater pressure prevention, prevention of seepage and watertight and wear the cabin requirement among the traditional art are satisfied the problem that corresponds communication positioning function, this system passes through one set of antenna assembly, greatly reduced the installation construction technology degree of difficulty, also reduced installation heaven leads to communication simultaneously, iridium star communication and big dipper GPS positioning device cost, be suitable for the popularization.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a logic block diagram of a communication positioning system based on skyton and Iridium satellites and Beidou satellites according to an embodiment of the present invention;
fig. 2 is a flowchart of function switching control performed by the communication positioning apparatus shown in fig. 1;
FIG. 2-1 shows a switching process of the main control module performing skyward communication and iridium communication; fig. 2-2 is a switching flow of the first beidou/GPS positioning module and the second beidou/GPS positioning module;
fig. 3 is a step diagram of a communication positioning method based on skyton, iridium and Beidou satellites.
In the drawings:
100-a radome; 200-radio frequency line
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Furthermore, the terms "first", "second", or different numbers of the same term are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example 1
As shown in FIG. 1, a communication positioning system based on skyton, Iridium and Beidou satellite comprises
The communication positioning triple-antenna device is used for providing a signal receiving and transmitting function of an antenna and an iridium satellite/Beidou/GPS antenna;
the antenna interface is used for providing an antenna interface to communicate the communication positioning triple antenna device and the communication positioning equipment for positioning and signal transmission;
the communication positioning equipment is used for providing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning, configuring a signal receiving and sending rule, controlling the signal transmission of the communication positioning triple antenna device through the antenna interface, and realizing the functions of antenna communication, iridium satellite communication and Beidou/GPS positioning based on the signal receiving and sending rule.
Aiming at underwater equipment such as an underwater glider, an AUV and the like, the invention changes the technical current situation that three sets of antennas (including an antenna, a radio frequency cable and a watertight cabin penetrating piece) are used for space satellite communication, iridium satellite communication and Beidou/GPS positioning into the situation that the space satellite communication, iridium satellite communication and Beidou/GPS positioning can be realized by only using one set of three-in-one antennas, thereby reducing the technical and working difficulties of the underwater equipment such as the underwater glider, the AUV and the like, and simultaneously reducing the cost.
Specifically, in an embodiment of the present invention, the communication positioning triple-antenna apparatus includes
The antenna is at least used for receiving the antenna communication signal and transmitting the output signal of the communication positioning equipment;
the iridium satellite/Beidou/GPS antenna is at least used for receiving iridium satellite communication signals, receiving Beidou/GPS positioning signals and transmitting output signals of the communication positioning equipment;
and the duplexer is used for providing a communication isolation channel so as to synthesize the receiving signals of the skynet antenna and the iridium satellite/Beidou/GPS antenna into input signals, transmit the input signals to the communication positioning equipment through the antenna interface, and send the signals output by the communication positioning equipment through the antenna interface to a corresponding antenna for transmission.
Further, among the foretell communication positioning system based on sky expert and iridium satellite and big dipper satellite, communication location three-in-one antenna device still includes trinity antenna physical channel for construct the accommodation space setting sky expert antenna, iridium satellite/big dipper GPS antenna and duplexer. As a preferred embodiment, the three-in-one antenna physical channel is an antenna housing 100 with an accommodating cavity, and the antenna housing 100 serves as a protection shell to meet the pressure-proof and permeation-proof requirements of underwater work; the radome 100 encapsulates the skywalking communication antenna radiator, the iridium satellite/big dipper/GPS antenna radiator and the duplexer, and an antenna interface is reserved outside and connected to the duplexer by an antenna interface circuit. The antenna interface of the communication positioning three-in-one antenna device is connected to the antenna interface of the communication positioning device through the radio frequency wire 200, so that signal transmission is realized.
Further, in the above communication positioning system based on skytom, iridium satellite and Beidou satellite, the communication positioning device includes:
the first communication positioning control module is used for controlling iridium satellite communication and Beidou/GPS positioning;
the second communication positioning control module is used for controlling the communication and Beidou/GPS positioning;
the main control module is used for controlling the first communication positioning control module and the second communication positioning control module to work; configuring a signal receiving and sending rule, transmitting an external input signal to the first communication positioning control module and the second communication positioning control module, and controlling the working signals of the first communication positioning control module and the second communication positioning control module to be processed so as to be sent to the communication positioning three-in-one antenna device for transmission;
and the first radio frequency switch is used for switching two paths of signals under the control of the main control module.
Wherein the first communication positioning control module comprises:
the first Beidou/GPS positioning module is used for carrying out Beidou/GPS positioning;
the iridium communication module is used for carrying out iridium communication;
the first control module is used for controlling the first Beidou/GPS positioning module and the iridium communication module to work, transmitting an external input signal to the iridium communication module or the first Beidou/GPS positioning module according to the signal receiving and transmitting rule, and controlling the working signal of the iridium communication module or the first Beidou/GPS positioning module to be processed under the driving of the main control module so as to be sent to the communication positioning three-in-one antenna device for transmitting;
and the second radio frequency switch is used for switching two paths of signals under the control of the first control module.
The second communication positioning control module comprises:
the second Beidou/GPS positioning module is used for carrying out Beidou/GPS positioning;
the antenna communication module is used for carrying out antenna communication;
the second control module is used for controlling the second Beidou/GPS positioning module and the antenna communication module to work, transmitting external input signals to the second Beidou/GPS positioning module and the antenna communication module according to the signal receiving and transmitting rules, and controlling working signals of the second Beidou/GPS positioning module and the antenna communication module to be processed under the driving of the main control module so as to be transmitted to the communication positioning three-in-one antenna device for transmitting;
and the third radio frequency switch is used for switching two paths of signals under the control of the second control module.
An antenna interface is arranged outside the communication positioning equipment and is connected with an antenna interface of the communication positioning three-in-one antenna device through a radio frequency wire 200; in specific implementation, the second radio frequency switch of the first communication positioning control module and the third radio frequency switch of the second communication positioning control module are respectively connected with the first radio frequency switch circuit; the radio frequency ports of the first Beidou/GPS positioning module and the iridium communication module are respectively connected with a second radio frequency switch circuit; and the radio frequency ports of the second Beidou/GPS positioning module and the skynet communication module are respectively connected with a third radio frequency switch circuit.
The first radio frequency switch receives an input signal entering from an antenna interface of the communication positioning device, and as shown in fig. 2-1, the main control module controls and drives the first radio frequency switch to switch, and controls the two communication positioning control modules to work:
the main control module controls the third radio frequency switch according to task requirements when the antenna communication is needed, the radio frequency signal of the antenna communication module is connected to the first radio frequency switch, the first radio frequency switch is controlled by the main control module, the signal is output to the antenna interface, and then the antenna interface is connected to the communication positioning three-in-one antenna device through the radio frequency wire, so that the receiving and the transmitting of the antenna communication are achieved.
When iridium communication is needed, the first control module controls the second radio frequency switch, the radio frequency signal of the iridium communication module is connected to the first radio frequency switch, the main control module controls the first radio frequency switch, the signal is output to the antenna interface, and the antenna interface is connected to the communication positioning triple antenna device through the radio frequency line, so that iridium communication receiving and transmitting are achieved.
Referring to fig. 2-2, when the big dipper/GPS positioning (skyward integrated module) is required, the second control module controls the third radio frequency switch, connects the radio frequency signal of the second big dipper/GPS positioning module to the first radio frequency switch, is controlled by the main control module to connect the signal to the antenna interface through the first radio frequency switch, and then is connected with the communication positioning three-in-one antenna device through the radio frequency line, thereby realizing the big dipper/GPS positioning.
When Beidou/GPS positioning (iridium satellite integrated module) is needed, the first control module controls the second radio frequency switch, radio frequency signals of the first Beidou/GPS positioning module are connected to the first radio frequency switch, the main control module controls the signals to be connected to the antenna interface through the first radio frequency switch, and then the signals are connected with the communication positioning three-in-one antenna device through the radio frequency wire, so that Beidou/GPS positioning is achieved.
When the switching operation is performed, the main control module further configures a signal transceiving rule, which specifically includes:
the first radio frequency switch is controlled to receive an input signal of the communication positioning three-in-one antenna device and distribute the input signal to the first communication positioning control module or the second communication positioning control module so as to drive the sky communication module, the iridium communication module or the corresponding Beidou/GPS positioning module to start, and the received input signal is processed to execute a communication or positioning function; wherein the input signal is: when the communication positioning triple-antenna device is in a receiving state, a signal is synthesized by a signal received by an antenna communication antenna and a signal received by an iridium satellite/Beidou/GPS antenna through a duplexer;
and controlling the working signal of the first communication positioning control module or the second communication positioning control module to be output to a duplexer of the communication positioning three-in-one antenna device through the first radio frequency switch, and carrying out signal transmission through the antenna.
When the communication positioning triple-antenna device works in a receiving state, a signal received by the antenna communication antenna and a signal received by the iridium satellite/Beidou/GPS antenna are combined into a signal through the duplexer and output through an antenna interface, and the output signal is connected to the antenna interface of the communication positioning device through the radio frequency wire 200 and serves as an input signal of the device; at the moment, according to the working requirement, the main control module enables the first communication positioning control module or the second communication positioning control module to be started, and correspondingly enables the second radio frequency switch or the third radio frequency switch to switch the working state (communication or positioning state) to send the input signal to the corresponding working module to complete the communication receiving or positioning receiving work; the antenna communication module can complete a communication receiving function based on a signal obtained by an antenna; the iridium communication module can complete a communication receiving function based on signals obtained by the iridium antenna; the Beidou/GPS positioning module can realize target positioning based on signals obtained by the Beidou/GPS antenna.
When the communication positioning triple-antenna device works in a transmitting state, a radio frequency signal (a signal connected to an antenna interface of the communication positioning triple-antenna device through a radio frequency wire 200) from the communication positioning device is transmitted to an antenna through a duplexer or an iridium satellite/Beidou/GPS antenna to complete signal transmission; the iridium satellite/Beidou/GPS antenna is an integrated antenna with the functions of signal transceiving such as iridium satellite communication and Beidou/GPS positioning.
The receiving and sending states of the communication and positioning three-in-one antenna device are reciprocal, and under the switching control of a control module of the communication and positioning device on the communication and positioning functions, signal receiving and sending rules are configured to carry out signal transmission with the communication and positioning three-in-one antenna device, so that the functions of antenna communication and Beidou/GPS positioning are realized.
In the communication positioning system based on the skyton, the iridium and the Beidou satellite, an antenna device with three functions of skyton communication, iridium communication and Beidou/GPS positioning is constructed, and a skyton communication signal, an iridium communication signal and a Beidou/GPS positioning signal can be synthesized and sent to communication positioning equipment through an antenna interface, so that the skyton communication function, the iridium communication function and the Beidou/GPS positioning function are realized; when being favorable to for being at underwater devices such as glider, AUV under water installation communication positioning device, compensate communication coverage not enough or the not powerful not enough of reliability when only the communication of heaven leads to, and the communication of heaven leads to, iridium star communication and big dipper GPS location only need one set of antenna assembly, three sets of antenna assembly that need reach underwater pressure prevention, prevention of seepage and watertight and wear the cabin requirement among the traditional art are satisfied the problem that corresponds communication positioning function, this system passes through one set of antenna assembly, greatly reduced the installation construction technology degree of difficulty, also reduced installation heaven leads to communication simultaneously, iridium star communication and big dipper GPS positioning device cost, be suitable for the popularization.
Example 2
As shown in fig. 3, the present invention further provides a communication positioning method based on skyward, iridium and Beidou satellites, which specifically includes:
constructing a communication and positioning three-in-one antenna device integrating skynet, iridium satellite communication and Beidou positioning into a whole, so as to provide the signal receiving and transmitting functions of a skynet antenna and an iridium satellite/Beidou/GPS antenna, and carry out signal transmission through an antenna interface;
setting a function switching rule for performing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning through switching of a radio frequency switch;
and configuring a signal receiving and sending rule, wherein the signal receiving and sending rule is used for correspondingly transmitting an input signal sent by the communication positioning three-in-one antenna device to the antenna communication module, the iridium satellite module or the Beidou/GPS positioning module when performing antenna communication, iridium satellite communication and Beidou/GPS positioning according to the function switching rule, and controlling to process a working signal of the antenna communication module, the iridium satellite module or the Beidou/GPS positioning module so as to send the working signal to the communication positioning three-in-one antenna device for transmitting.
In the method, a communication and positioning three-in-one antenna device integrating sky communication, iridium satellite communication and Beidou positioning is constructed to reduce the installation difficulty and cost in the process of installing the communication and positioning equipment on the underwater equipment, and two functions of communication and positioning are realized through one set of antenna device.
Specifically, as shown in fig. 1, the communication and positioning triple antenna device with three functions of skynet, iridium satellite communication and Beidou positioning is configured to provide a signal receiving and transmitting function of a skynet antenna and an iridium satellite/Beidou/GPS antenna, and perform signal transmission through an antenna interface, and specifically includes:
setting an antenna for at least receiving antenna communication signals and transmitting output signals of the communication positioning equipment;
an iridium satellite/Beidou/GPS antenna is arranged and at least used for receiving an iridium satellite communication signal, receiving a Beidou/GPS positioning signal and transmitting an output signal of communication positioning equipment;
the duplexer is used for providing a communication isolation channel, synthesizing the receiving signals of the skynet antenna and the iridium satellite/Beidou/GPS antenna into input signals, transmitting the input signals to the communication positioning equipment through the antenna interface, and sending the signals output by the communication positioning equipment through the antenna interface to the corresponding antenna for transmission.
The antenna and the iridium satellite/Beidou/GPS antenna are connected with the duplexer, the duplexer can synthesize the antenna, the iridium satellite/Beidou/GPS antenna and a receiving signal into a signal, the signal is output through an antenna interface, the output signal is transmitted to the antenna interface of the antenna communication, iridium satellite communication and Beidou/GPS positioning equipment (namely the communication positioning equipment), and the signal is used as an input signal of the equipment to carry out corresponding communication or positioning work.
Furthermore, the invention also comprises a three-in-one antenna physical channel for constructing a containing space for arranging the skynet antenna, the iridium satellite/Beidou/GPS antenna and the duplexer. As a preferred embodiment, the three-in-one antenna physical channel is an antenna housing 100 with an accommodating cavity, and the antenna housing 100 serves as a protection shell to meet the pressure-proof and permeation-proof requirements of underwater work; the radome 100 encapsulates a skywalking communication antenna radiator, an iridium satellite/compass/GPS antenna (i.e., compass/GPS antenna) radiator and a duplexer, and an antenna interface is reserved outside and connected to the duplexer through an antenna interface circuit. The antenna interface of the communication positioning three-in-one antenna device is connected to the antenna interface of the communication positioning device through the radio frequency wire 200, so that signal transmission is realized.
The method of the present invention further includes setting a function switching rule and configuring a signal transceiving rule in the communication positioning device, where the management of the function switching and the signal transceiving is implemented by the communication positioning device of the present invention, and the implementation principle thereof may be correspondingly described with reference to the foregoing embodiment 1.
In the method of the invention, an antenna interface is arranged outside the communication positioning equipment and is connected with the antenna interface of the communication positioning triple antenna device through a radio frequency wire 200; in specific implementation, the second radio frequency switch of the first communication positioning control module and the third radio frequency switch of the second communication positioning control module are respectively connected with the first radio frequency switch circuit; the radio frequency ports of the first Beidou/GPS positioning module and the iridium communication module are respectively connected with a second radio frequency switch circuit; and the radio frequency ports of the second Beidou/GPS positioning module and the skynet communication module are respectively connected with a third radio frequency switch circuit.
The first radio frequency switch receives an input signal entering from an antenna interface of the communication positioning device, and as shown in fig. 2, the main control module controls and drives the first radio frequency switch to switch, and controls the two communication positioning control modules to work:
the main control module controls the third radio frequency switch according to task requirements when the antenna communication is needed, the radio frequency signal of the antenna communication module is connected to the first radio frequency switch, the first radio frequency switch is controlled by the main control module, the signal is output to the antenna interface, and then the antenna interface is connected to the communication positioning three-in-one antenna device through the radio frequency wire, so that the receiving and the transmitting of the antenna communication are achieved.
When iridium communication is needed, the first control module controls the second radio frequency switch, the radio frequency signal of the iridium communication module is connected to the first radio frequency switch, the main control module controls the first radio frequency switch, the signal is output to the antenna interface, and the antenna interface is connected to the communication positioning triple antenna device through the radio frequency line, so that iridium communication receiving and transmitting are achieved.
When Beidou/GPS positioning (space-through integrated module) is needed, the second control module controls the third radio frequency switch, the radio frequency signal of the second Beidou/GPS positioning module is connected to the first radio frequency switch, the main control module controls the signal to be connected to the antenna interface through the first radio frequency switch, and then the signal is connected with the communication positioning three-in-one antenna device through the radio frequency wire, so that Beidou/GPS positioning is achieved.
When Beidou/GPS positioning (iridium satellite integrated module) is needed, the first control module controls the second radio frequency switch, radio frequency signals of the first Beidou/GPS positioning module are connected to the first radio frequency switch, the main control module controls the signals to be connected to the antenna interface through the first radio frequency switch, and then the signals are connected with the communication positioning three-in-one antenna device through the radio frequency wire, so that Beidou/GPS positioning is achieved.
When the switching operation is performed, the main control module further configures a signal transceiving rule, which specifically includes:
the first radio frequency switch is controlled to receive an input signal of the communication positioning three-in-one antenna device and distribute the input signal to the first communication positioning control module or the second communication positioning control module so as to drive the sky communication module, the iridium communication module or the corresponding Beidou/GPS positioning module to start, and the received input signal is processed to execute a communication or positioning function; wherein the input signal is: when the communication positioning triple-antenna device is in a receiving state, a signal is synthesized by a signal received by an antenna communication antenna and a signal received by an iridium satellite/Beidou/GPS antenna through a duplexer;
and controlling the working signal of the first communication positioning control module or the second communication positioning control module to be output to a duplexer of the communication positioning three-in-one antenna device through the first radio frequency switch, and carrying out signal transmission through the antenna.
In particular, implementation of the invention and all of the functional operations provided herein may be implemented in computer software, firmware, or hardware, including the structures disclosed in this specification and their structural equivalents, or in combinations of one or more of them. Implementations of the present invention can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer-readable medium; the computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more of them.
A computer program (also known as a program, software application, script, or code) can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code).
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. The utility model provides a communication positioning system based on sky leads to and iridium and big dipper satellite which characterized in that: comprises that
The communication positioning triple-antenna device is used for providing a signal receiving and transmitting function of an antenna and an iridium satellite/Beidou/GPS antenna;
the antenna interface is used for providing an antenna interface to communicate the communication positioning triple antenna device and the communication positioning equipment for positioning and signal transmission;
the communication positioning equipment is used for providing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning, configuring a signal receiving and sending rule, controlling the signal transmission of the communication positioning triple antenna device through the antenna interface, and realizing the functions of antenna communication, iridium satellite communication and Beidou/GPS positioning based on the signal receiving and sending rule.
2. The system of claim 1, wherein the system is adapted for skytunning, iridium and Beidou satellites based communication positioning, and comprises: the communication positioning three-in-one antenna device comprises
The antenna is at least used for receiving the antenna communication signal and transmitting the output signal of the communication positioning equipment;
the iridium satellite/Beidou/GPS antenna is at least used for receiving iridium satellite communication signals, receiving Beidou/GPS positioning signals and transmitting output signals of the communication positioning equipment;
and the duplexer is used for providing a communication isolation channel so as to synthesize the receiving signals of the skynet antenna and the iridium satellite/Beidou/GPS antenna into input signals, transmit the input signals to the communication positioning equipment through the antenna interface, and send the signals output by the communication positioning equipment through the antenna interface to a corresponding antenna for transmission.
3. The skytyport and iridium and Beidou satellite based communication and positioning system as claimed in claim 2, wherein: the communication positioning triple-antenna device further comprises a three-in-one antenna physical channel for constructing the accommodating space for setting the antenna, the Iridium/Beidou/GPS antenna and the duplexer.
4. The skytyport and iridium and Beidou satellite based communication and positioning system as claimed in claim 2, wherein: the communication positioning device includes:
the first communication positioning control module is used for controlling iridium satellite communication and Beidou/GPS positioning;
the second communication positioning control module is used for controlling the communication and Beidou/GPS positioning;
the main control module is used for controlling the first communication positioning control module and the second communication positioning control module to work; configuring a signal receiving and sending rule, transmitting an external input signal to the first communication positioning control module and the second communication positioning control module, and controlling the working signals of the first communication positioning control module and the second communication positioning control module to be processed so as to be sent to the communication positioning three-in-one antenna device for transmission;
and the first radio frequency switch is used for switching two paths of signals under the control of the main control module.
5. The skytyport and iridium and Beidou satellite based communication and positioning system as claimed in claim 4, wherein: the first communication positioning control module comprises:
the first Beidou/GPS positioning module is used for carrying out Beidou/GPS positioning;
the iridium communication module is used for carrying out iridium communication;
the first control module is used for controlling the first Beidou/GPS positioning module and the iridium communication module to work, transmitting an external input signal to the iridium communication module or the first Beidou/GPS positioning module according to the signal receiving and transmitting rule, and controlling the working signal of the iridium communication module or the first Beidou/GPS positioning module to be processed under the driving of the main control module so as to be sent to the communication positioning three-in-one antenna device for transmitting;
and the second radio frequency switch is used for switching two paths of signals under the control of the first control module.
6. The skytyport and iridium and Beidou satellite based communication and positioning system as claimed in claim 5, wherein: the second communication positioning control module comprises:
the second Beidou/GPS positioning module is used for carrying out Beidou/GPS positioning;
the antenna communication module is used for carrying out antenna communication;
the second control module is used for controlling the second Beidou/GPS positioning module and the antenna communication module to work, transmitting external input signals to the second Beidou/GPS positioning module and the antenna communication module according to the signal receiving and transmitting rules, and controlling working signals of the second Beidou/GPS positioning module and the antenna communication module to be processed under the driving of the main control module so as to be transmitted to the communication positioning three-in-one antenna device for transmitting;
and the third radio frequency switch is used for switching two paths of signals under the control of the second control module.
7. The skytyport and iridium and Beidou satellite based communication and positioning system as claimed in claim 6, wherein: the signal transceiving rules configured by the main control module comprise:
the first radio frequency switch is controlled to receive an input signal of the communication positioning three-in-one antenna device and distribute the input signal to the first communication positioning control module or the second communication positioning control module, the antenna communication module, the iridium communication module or the corresponding Beidou/GPS positioning module is controlled to be started, and the received input signal is processed to execute a communication or positioning function; wherein the input signal is: when the communication positioning triple-antenna device is in a receiving state, a path of signal is synthesized by signals received by an antenna and an iridium satellite/Beidou/GPS antenna through a duplexer;
and controlling working signals of the first communication positioning control module and the second communication positioning control module to be output to a duplexer of the communication positioning triple-antenna device through the first radio frequency switch, and transmitting signals through an antenna or an iridium satellite/Beidou/GPS antenna.
8. A communication positioning method based on skyton, iridium and Beidou satellites is characterized by comprising the following steps: the method comprises the following steps:
constructing a communication and positioning three-in-one antenna device integrating skynet, iridium satellite communication and Beidou positioning into a whole, so as to provide the signal receiving and transmitting functions of a skynet antenna and an iridium satellite/Beidou/GPS antenna, and carry out signal transmission through an antenna interface;
setting a function switching rule for performing the functions of sky communication, iridium satellite communication and Beidou/GPS positioning through switching of a radio frequency switch;
and configuring a signal receiving and sending rule, wherein the signal receiving and sending rule is used for correspondingly transmitting an input signal sent by the communication positioning three-in-one antenna device to the antenna communication module, the iridium communication module or the Beidou/GPS positioning module when performing antenna communication, iridium communication and Beidou/GPS positioning according to the function switching rule, and controlling to process a working signal of the antenna communication module, the iridium communication module or the Beidou/GPS positioning module so as to send the working signal to the communication positioning three-in-one antenna device for transmitting.
9. The communication positioning method based on skyton and iridium and Beidou satellites as set forth in claim 8, characterized in that: construct three-in-one communication location three-in-one antenna device of sky expert, iridium satellite communication and big dipper location to be used for providing the signal transceiver function of sky expert antenna and iridium satellite/big dipper GPS antenna, and carry out signal transmission through an antenna interface, specifically include:
setting an antenna for at least receiving antenna communication signals and transmitting output signals of the communication positioning equipment;
an iridium satellite/Beidou/GPS antenna is arranged and at least used for receiving an iridium satellite communication signal, receiving a Beidou/GPS positioning signal and transmitting an output signal of communication positioning equipment;
the duplexer is used for providing a communication isolation channel, synthesizing the receiving signals of the skynet antenna and the iridium satellite/Beidou/GPS antenna into input signals, transmitting the input signals to the communication positioning equipment through the antenna interface, and sending the signals output by the communication positioning equipment through the antenna interface to the corresponding antenna for transmission.
10. The communication positioning method based on skyton and iridium and Beidou satellites as set forth in claim 9, characterized in that: construct three-in-one communication location three-in-one antenna device of sky expert communication, iridium satellite communication and big dipper location to be used for providing the signal transceiver function of sky expert antenna and iridium satellite big dipper GPS antenna, and carry out signal transmission through an antenna interface, still include:
set up trinity antenna physical channel for construct the accommodation space setting sky leads to antenna, iridium satellite/big dipper GPS antenna and duplexer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737664A (en) * | 2020-12-23 | 2021-04-30 | 中电科航空电子有限公司 | Communication module switching method, device, equipment and readable storage medium |
| CN112954794A (en) * | 2021-03-31 | 2021-06-11 | 天津大学 | Full-sea-depth, modularized and multi-mode communication positioning device |
| CN114237132A (en) * | 2022-02-23 | 2022-03-25 | 中国海洋大学 | Redundant satellite positioning communication system for wave glider |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2760701A1 (en) * | 2009-05-01 | 2011-02-10 | Coherent Navigation, Inc. | Practical method for upgrading existing gnss user equipment with tightly integrated nav-com capability |
| US20120008463A1 (en) * | 2010-04-19 | 2012-01-12 | University Of Delaware | High data rate acoustic multiple-input/multiple-output (mimo) communication apparatus and system for submersibles |
| EP2781447A1 (en) * | 2011-10-18 | 2014-09-24 | Consejo Superior De Investigaciones Científicas (CSIC) | Method for transferring data between at least one lagrangian buoy for measuring currents for ocean and coastal environments and a base station, and lagrangian buoy for measuring currents for ocean and coastal environments |
| CN104683019A (en) * | 2013-11-30 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Wireless communication system and method for underwater robot |
| US20180212320A1 (en) * | 2016-06-29 | 2018-07-26 | Changzhou Ctw Electronics Co., Ltd. | A GPS/BDS Vehicle Antenna with Dual Output Port LNA |
| CN108609135A (en) * | 2018-04-25 | 2018-10-02 | 华中科技大学 | A kind of hybrid drive-type underwater glider having multi-operation mode |
| CN108832988A (en) * | 2018-05-28 | 2018-11-16 | 成都市精准时空科技有限公司 | A kind of method and communication terminal controlling multi-mode satellite serial communication |
| CN110161578A (en) * | 2019-06-18 | 2019-08-23 | 中国地震局地球物理研究所 | A kind of backdeeps convected curvilinear coordinate system and method |
| CN110401034A (en) * | 2019-08-13 | 2019-11-01 | 中国电子科技集团公司第五十四研究所 | A kind of integrated antenna of communication and navigation |
-
2020
- 2020-08-14 CN CN202010817912.3A patent/CN111953404B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2760701A1 (en) * | 2009-05-01 | 2011-02-10 | Coherent Navigation, Inc. | Practical method for upgrading existing gnss user equipment with tightly integrated nav-com capability |
| US20120008463A1 (en) * | 2010-04-19 | 2012-01-12 | University Of Delaware | High data rate acoustic multiple-input/multiple-output (mimo) communication apparatus and system for submersibles |
| EP2781447A1 (en) * | 2011-10-18 | 2014-09-24 | Consejo Superior De Investigaciones Científicas (CSIC) | Method for transferring data between at least one lagrangian buoy for measuring currents for ocean and coastal environments and a base station, and lagrangian buoy for measuring currents for ocean and coastal environments |
| CN104683019A (en) * | 2013-11-30 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Wireless communication system and method for underwater robot |
| US20180212320A1 (en) * | 2016-06-29 | 2018-07-26 | Changzhou Ctw Electronics Co., Ltd. | A GPS/BDS Vehicle Antenna with Dual Output Port LNA |
| CN108609135A (en) * | 2018-04-25 | 2018-10-02 | 华中科技大学 | A kind of hybrid drive-type underwater glider having multi-operation mode |
| CN108832988A (en) * | 2018-05-28 | 2018-11-16 | 成都市精准时空科技有限公司 | A kind of method and communication terminal controlling multi-mode satellite serial communication |
| CN110161578A (en) * | 2019-06-18 | 2019-08-23 | 中国地震局地球物理研究所 | A kind of backdeeps convected curvilinear coordinate system and method |
| CN110401034A (en) * | 2019-08-13 | 2019-11-01 | 中国电子科技集团公司第五十四研究所 | A kind of integrated antenna of communication and navigation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737664A (en) * | 2020-12-23 | 2021-04-30 | 中电科航空电子有限公司 | Communication module switching method, device, equipment and readable storage medium |
| CN112954794A (en) * | 2021-03-31 | 2021-06-11 | 天津大学 | Full-sea-depth, modularized and multi-mode communication positioning device |
| CN112954794B (en) * | 2021-03-31 | 2021-11-05 | 天津大学 | Full-sea-depth, modularized and multi-mode communication positioning device |
| CN114237132A (en) * | 2022-02-23 | 2022-03-25 | 中国海洋大学 | Redundant satellite positioning communication system for wave glider |
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| Publication number | Publication date |
|---|---|
| CN111953404B (en) | 2022-06-17 |
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