Multifunctional satellite signal forwarding device and method

Abstract

The invention belongs to the technical field of satellite navigation, particularly relates to a multifunctional satellite signal forwarding device and method, and aims to solve the problem that a common satellite receiver is used for receiving satellite signals indoors. The device comprises an outdoor receiving antenna, an indoor forwarding antenna, a forwarding amplification module, a power divider, an attenuator, a satellite receiving module and a display screen. The method comprises the following steps: receiving an outdoor satellite signal; amplifying the received outdoor satellite signal through a two-stage amplification circuit to obtain a two-stage amplified satellite signal; dividing the two-stage amplified satellite signal into a first path of signal and a second path of signal; and performing power adjustment on the first path of signal to obtain a satellite signal after power adjustment, transmitting the satellite signal after power adjustment indoors, and outputting positioning display data and a time synchronization signal according to the second path of signal. According to the invention, satellite signals can be led from the outdoor to the indoor or other places where the satellite signals cannot be received.

Description

Background Art

[0002] Satellite signal forwarding devices are widely used in indoor satellite receiving scenarios: aviation manufacturing, aviation maintenance, laboratories, building parking lots, GPS stores, indoor demonstration halls, etc. Satellite signal forwarding devices lock satellite signals in the sky through receiving antennas, and lead satellite signals from outdoors to indoors or other places where satellite signals cannot be received. Satellite signals can be received indoors with ordinary satellite receivers, and various tasks that should be completed outdoors can be completed indoors.

[0003] The following documents are technical background materials related to the present invention:

[0004] The patent name is "Satellite Signal Forwarding Device" (Announcement No. CN110730016B). The device includes 2 receiving antennas, 2 forwarding antennas, RF front-end module, GLONASS direct amplification module, signal regeneration module, directional module, control module, RF control module and power module; the 2 receiving antennas feed the received satellite signals to the RF front-end module through RF cables; the 2 forwarding antennas transmit the satellite signals output by the RF control module; the RF front-end module divides the received satellite signals into three paths; the GLONASS direct amplification module amplifies and controls the power of the GLONASS signals; the regeneration module regenerates and controls the power of the GPS / BD signals. Although the classification of the received satellite navigation signals, the amplification and power control of the GLONASS signals, and the regeneration and power control of the GPS / BD signals can effectively improve the signal-to-noise ratio and quality of the satellite navigation signals, it fails to lead the satellite signals from outdoors to indoors or other places where satellite signals cannot be received. Summary of the invention

[0005] In order to solve the above-mentioned problem in the prior art, namely, the problem of receiving satellite signals indoors with an ordinary satellite receiver, the present invention provides a multifunctional satellite signal repeater, which can receive satellite signals indoors with an ordinary satellite receiver, and complete various tasks that should be completed outdoors indoors.

[0006] In one aspect of the present invention, a multifunctional satellite signal forwarding device is provided, comprising an outdoor receiving antenna, an indoor forwarding antenna, a forwarding amplification module, a power divider, an attenuator, a satellite receiving module and a display screen; wherein:

[0007] The outdoor receiving antenna is used to receive outdoor satellite signals and send them to the forwarding and amplifying module via cables;

[0008] The forwarding and amplifying module is used to amplify the received outdoor satellite signal through a two-stage amplifying circuit to obtain a two-stage amplified satellite signal;

[0009] The power splitter is used to split the satellite signal power of the two-stage amplification into two signals, wherein the first signal is directly input into the attenuator, and the second signal is transmitted to the satellite receiving module;

[0010] The attenuator is used to adjust the power of the first signal to obtain a satellite signal after power adjustment;

[0011] The satellite receiving module is used to output the positioning display data and the timing signal of the display screen based on the second signal;

[0012] The indoor repeater antenna is used to transmit the satellite signal with adjusted power indoors.

[0013] Preferably, the satellite receiving module includes an OEM module, a plurality of RS232 communication interfaces and an ARM processor;

[0014] The OEM module is used to calculate the second signal to obtain forwarding positioning status data and time information;

[0015] The ARM processor is used to perform data conversion on the forwarded positioning status data to obtain the positioning display data for transmission to the display screen for display.

[0016] Preferably, the multiple RS232 communication interfaces include a first RS232 communication interface, a second RS232 communication interface, a third RS232 communication interface and a reserved RS232 communication interface; wherein,

[0017] The first RS232 communication interface is used to transmit the forwarding positioning status data to the ARM processor;

[0018] The second RS232 communication interface is used to transmit the positioning display data to the display screen of the external serial port;

[0019] The third RS232 communication interface is used to convert the time information into a timing signal according to the RS232 protocol, and send out the timing signal in an optically isolated manner.

[0020] Preferably, the outdoor receiving antenna is capable of receiving satellite signals of three systems: GPS L1, BDS B3 and GLONASS L1.

[0021] Preferably, the outdoor receiving antenna and the indoor receiving antenna both adopt six-band omnidirectional antennas, whose frequency band range is set to 1555MHz~1615MHz and / or 1198MHz~1268MHz, and whose polarization mode is right-hand circular polarization.

[0022] Preferably, the display screen is used to display the positioning display data including satellite type, number of satellites, satellite number, signal-to-noise ratio and positioning position coordinate information in real time.

[0023] Preferably, the indicators of the display screen are: CPU main frequency 400 MHz, RAM 64 MB, FLASH 128 MB, response time 25 ms and backlight power consumption 1.96 W.

[0024] Preferably, the attenuator is a passive knob attenuator, and its indicators are: power 2W, power attenuation dynamic adjustment range 0-31dB, adjustment step 1dB and frequency <2.7GHz.

[0025] Preferably, the AC-DC module is used to convert an external 220V voltage into a DC voltage to provide power for each module of the multifunctional satellite signal forwarding device.

[0026] Another aspect of the present invention provides a forwarding method applied to the multifunctional satellite signal forwarding device, the method comprising:

[0027] Receive outdoor satellite signals;

[0028] Amplifying the received outdoor satellite signal through a two-stage amplifier circuit to obtain a two-stage amplified satellite signal;

[0029] The satellite signal power of the two-stage amplification is divided into a first signal and a second signal;

[0030] The first signal is power-adjusted to obtain a power-adjusted satellite signal, and the power-adjusted satellite signal is transmitted indoors, while positioning display data and a timing signal are output according to the second signal.

[0031] Beneficial effects of the present invention:

[0032] The present invention locks the sky satellite signal through the receiving antenna, and leads the satellite signal from outdoor to indoor or other places where the satellite signal cannot be received. The satellite signal can be received indoors by using an ordinary satellite receiver, and various tasks that should be completed outdoors can be completed indoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0034] Figure 1 It is a structural block diagram of a multifunctional satellite signal forwarding device;

[0035] Figure 2 It is the structural block diagram of the satellite receiving module;

[0036] Figure 3 The present invention is a flow chart of a multifunctional satellite signal forwarding method. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the relevant invention are shown in the accompanying drawings.

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] The present invention provides a multifunctional satellite signal forwarding device, which guides satellite signals from outdoors to indoors or other places where satellite signals cannot be received. Satellite signals can be received indoors by using an ordinary satellite receiver, and various tasks that should be completed outdoors can be completed indoors.

[0040] A multifunctional satellite signal forwarding device of the present invention comprises an outdoor receiving antenna, an indoor forwarding antenna, a forwarding amplification module, a power divider, an attenuator, a satellite receiving module and a display screen; wherein:

[0041] The outdoor receiving antenna is used to receive outdoor satellite signals and send them to the forwarding and amplifying module via cables;

[0042] The forwarding and amplifying module is used to amplify the received outdoor satellite signal through a two-stage amplifying circuit to obtain a two-stage amplified satellite signal;

[0043] The power splitter is used to split the satellite signal power of the two-stage amplification into two signals, wherein the first signal is directly input into the attenuator, and the second signal is transmitted to the satellite receiving module;

[0044] The attenuator is used to adjust the power of the first signal to obtain a satellite signal after power adjustment;

[0045] The satellite receiving module is used to output the positioning display data and the timing signal of the display screen based on the second signal;

[0046] The indoor repeater antenna is used to transmit the satellite signal with adjusted power indoors.

[0047] In order to more clearly explain the multifunctional satellite signal forwarding device of the present invention, Figure 1 Each module in the embodiment of the present invention is described in detail.

[0048] The multifunctional satellite signal forwarding device of the first embodiment of the present invention is as follows: Figure 1 As shown, it includes an outdoor receiving antenna 101, an indoor forwarding antenna 102, a forwarding amplifier module 103, a power divider 104, an attenuator 105, a satellite receiving module 106 and a display screen 107. Each module is described in detail as follows:

[0049] The outdoor receiving antenna 101 is used to receive outdoor satellite signals and send them to the forwarding and amplifying module 103 via cables;

[0050] The forwarding and amplifying module 103 is used to amplify the received outdoor satellite signal through a two-stage amplifying circuit to obtain a two-stage amplified satellite signal;

[0051] The power divider 104 is used to divide the satellite signal power after the two-stage amplification into two signals, wherein the first signal is directly input into the attenuator 105, and the second signal is transmitted to the satellite receiving module 106;

[0052] The attenuator 105 is used to adjust the power of the first signal to obtain a satellite signal after power adjustment;

[0053] The satellite receiving module 106 is used to output the positioning display data and the timing signal of the display screen 107 based on the second signal;

[0054] The indoor repeater antenna 102 is used to transmit the satellite signal with adjusted power indoors.

[0055] Specifically, the GNSS signal forwarding test equipment receives outdoor satellite signals through an active antenna, amplifies the satellite signals through the signal forwarding module, then uses an attenuator to adjust the power, and then provides the satellite signals to indoor devices through the transmitting antenna; the forwarding equipment is equipped with a forwarding device that can receive GPS L1, BDS B1 and GLONASS L1 signals, and the positioning and satellite capture status of the forwarding equipment can be displayed in real time through the display screen. When forwarding outdoor satellite signals, the power attenuation can be adjusted from 0 to 30dB; the system power gain is not less than 40dB.

[0056] The present invention locks the sky satellite signal through the receiving antenna, and leads the satellite signal from outdoor to indoor or other places where the satellite signal cannot be received. The satellite signal can be received indoors by using an ordinary satellite receiver, and various tasks that should be completed outdoors can be completed indoors.

[0057] It should be noted that the multifunctional satellite signal forwarding device provided in the above embodiment is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be decomposed or combined. For example, the modules in the above embodiment can be combined into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not regarded as improper limitations of the present invention.

[0058] Based on the above embodiments, Figure 2 As shown, the satellite receiving module 106 includes an OEM module 201, a plurality of RS232 communication interfaces and an ARM processor 202;

[0059] The OEM module 201 is used to calculate the second signal to obtain forwarding positioning status data and time information;

[0060] The ARM processor 202 is used to perform data conversion on the forwarded positioning status data to obtain the positioning display data for transmission to the display screen for display.

[0061] It should be noted that the satellite receiving module (OEM) technology is quite mature, with high sensitivity and low power consumption, and comes with at least 4 RS232s to facilitate communication with ARM. In other words, the positioning status data calculated by the satellite receiving module is transmitted to ARM via RS232 for data conversion and then transmitted to the external serial port display screen through the RS232 interface.

[0062] Based on the above embodiment, the multiple RS232 communication interfaces include a first RS232 communication interface, a second RS232 communication interface, a third RS232 communication interface and a reserved RS232 communication interface; wherein,

[0063] The first RS232 communication interface is used to transmit the forwarding positioning status data to the ARM processor;

[0064] The second RS232 communication interface is used to transmit the positioning display data to the display screen of the external serial port;

[0065] The third RS232 communication interface is used to convert the time information into a timing signal according to the RS232 protocol, and send out the timing signal in an optically isolated manner.

[0066] Specifically, the interface performance indicators are as follows:

[0067] Frequency: GPS L1, 1575.42MHz, C / A;

[0068] GLONASS L1, 1602MHz, C / A;

[0069] BD B1, 1561.098MHz, C / A;

[0070] Channels: 220;

[0071] Refresh rate: 1Hz, 2Hz, 5Hz, 10Hz, 20Hz;

[0072] Start-up time: hot start: <30s;

[0073] Cold start: <45s.

[0074] 1PPS signal output:

[0075] The communication interface adopts RS232 protocol, and the transmission and reception are optically isolated.

[0076] Based on the above embodiment, the outdoor receiving antenna is capable of receiving satellite signals of three systems: GPS L1, BDS B3 and GLONASS L1.

[0077] Specifically, the outdoor receiving antenna is capable of receiving satellite navigation signals from three systems: GPS L1, BDS B3 and GLONASS L1, so as to calculate the location and positioning of the forwarding equipment in real time.

[0078] Based on the above embodiment, the outdoor receiving antenna and the indoor receiving antenna both adopt six-band omnidirectional antennas, whose frequency band range is set to 1555MHz~1615MHz and / or 1198MHz~1268MHz, and their polarization mode is right-hand circular polarization.

[0079] That is to say, both the outdoor receiving antenna and the indoor receiving antenna adopt six-band omnidirectional antennas, and the technical indicators are as follows:

[0080] Frequency range: 1555MHz~1615MHz / 1198MHz~1268MHz;

[0081] Polarization: right-hand circular polarization;

[0082] Direction circle: Omnidirectional.

[0083] Based on the above embodiment, the display screen is used to display the positioning display data including satellite type, number of satellites, satellite number, signal-to-noise ratio and positioning position coordinate information in real time.

[0084] Specifically, the device has its own display screen that can display the satellite type, number of satellites, satellite number and signal-to-noise ratio in real time, and has a touch screen function that can switch to display the positioning location coordinate information.

[0085] Based on the above embodiment, the indicators of the display screen are: CPU main frequency 400 MHz, RAM 64 MB, FLASH 128 MB, response time 25 ms and backlight power consumption 1.96 W.

[0086] Specifically, the display screen displays the positioning data of the navigation module and the selected indicators are as follows:

[0087] a)CPU frequency: 400 MHz RAM 64 MB:

[0088] b) FLASH: 128MB;

[0089] c) Response time: 25ms;

[0090] d) Backlight power consumption: 1.96W.

[0091] Based on the above embodiment, the attenuator is a passive knob attenuator, and its indicators are: power 2W, power attenuation dynamic adjustment range 0-31dB, adjustment step 1dB and frequency <2.7GHz.

[0092] Based on the above embodiment, the device further includes an AC-DC module;

[0093] The AC-DC module is used to convert the external 220V voltage into a DC voltage to provide power for each module of the multifunctional satellite signal forwarding device.

[0094] The multifunctional satellite signal forwarding method of the second embodiment of the present invention is based on the multifunctional satellite signal forwarding device described above. The method includes steps S301 to S304. Figure 3 As shown, each step is described in detail as follows:

[0095] Step S301, receiving outdoor satellite signals;

[0096] Step S302, amplifying the received outdoor satellite signal through a two-stage amplifier circuit to obtain a two-stage amplified satellite signal;

[0097] Step S303, splitting the satellite signal after the two-stage amplification into a first signal and a second signal;

[0098] Step S304, power-adjusting the first signal to obtain a power-adjusted satellite signal, transmitting the power-adjusted satellite signal indoors, and outputting positioning display data and a timing signal according to the second signal.

[0099] Although the various steps in the above embodiment are described in the above-mentioned order, those skilled in the art can understand that in order to achieve the effect of this embodiment, different steps do not have to be executed in such an order. They can be executed simultaneously (in parallel) or in a reverse order. These simple changes are within the scope of protection of the present invention.

[0100] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process and related instructions of the system described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0101] Those skilled in the art should be able to appreciate that the modules and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software or a combination of the two, and the programs corresponding to the software modules and method steps can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the technical field. In order to clearly illustrate the interchangeability of electronic hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0102] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the device and method according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the module, the program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0103] The terms "first", "second", etc. are used to distinguish similar objects rather than to describe or indicate a particular order or sequence.

[0104] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0105] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A multifunctional satellite signal forwarding device, characterized in that: It includes an outdoor receiving antenna, an indoor forwarding antenna, a forwarding amplifier module, a power divider, an attenuator, a satellite receiving module and a display screen; among which, The outdoor receiving antenna is used to receive outdoor satellite signals and send them to the forwarding and amplifying module via cables; The forwarding and amplifying module is used to amplify the received outdoor satellite signal through a two-stage amplifying circuit to obtain a two-stage amplified satellite signal; The power splitter is used to split the satellite signal power of the two-stage amplification into two signals, wherein the first signal is directly input into the attenuator, and the second signal is transmitted to the satellite receiving module; The attenuator is used to adjust the power of the first signal to obtain a satellite signal after power adjustment; The satellite receiving module is used to output the positioning display data and the timing signal of the display screen based on the second signal; The indoor repeater antenna is used to transmit the satellite signal with adjusted power indoors.

2. The multifunctional satellite signal forwarding device according to claim 1, characterized in that: The satellite receiving module includes an OEM module, multiple RS232 communication interfaces and an ARM processor; The OEM module is used to calculate the second signal to obtain forwarding positioning status data and time information; The ARM processor is used to perform data conversion on the forwarded positioning status data to obtain the positioning display data for transmission to the display screen for display.

3. The multifunctional satellite signal forwarding device according to claim 2, characterized in that: The multiple RS232 communication interfaces include a first RS232 communication interface, a second RS232 communication interface, a third RS232 communication interface and a reserved RS232 communication interface; wherein, The first RS232 communication interface is used to transmit the forwarding positioning status data to the ARM processor; The second RS232 communication interface is used to transmit the positioning display data to the display screen of the external serial port; The third RS232 communication interface is used to convert the time information into a timing signal according to the RS232 protocol, and send the timing signal in an optically isolated manner.

4. The multifunctional satellite signal forwarding device according to claim 1, characterized in that: The outdoor receiving antenna is capable of receiving satellite signals of three systems: GPS L1, BDS B3 and GLONASS L1.

5. The multifunctional satellite signal forwarding device according to claim 1, characterized in that: The outdoor receiving antenna and the indoor receiving antenna both adopt six-band omnidirectional antennas, whose frequency band range is set to 1555MHz-1615MHz and / or 1198MHz-1268MHz, and whose polarization mode is right-hand circular polarization.

6. The multifunctional satellite signal forwarding device according to claim 1, 2 or 3, characterized in that: The display screen is used to display the positioning display data including satellite type, satellite quantity, satellite number, signal-to-noise ratio and positioning position coordinate information in real time.

7. The multifunctional satellite signal forwarding device according to claim 6, characterized in that: The indicators of the display screen are: CPU main frequency 400 MHz, RAM 64 MB, FLASH 128 MB, response time 25 ms and backlight power consumption 1.96 W.

8. The multifunctional satellite signal forwarding device according to claim 1, characterized in that: The attenuator is a passive knob attenuator, and its indicators are: power 2W, power attenuation dynamic adjustment range 0-31dB, adjustment step 1dB and frequency <2.7GHz.

9. The multifunctional satellite signal forwarding device according to any one of claims 1 to 8, characterized in that: Also includes AC-DC modules; The AC-DC module is used to convert the external 220V voltage into a DC voltage to provide power for each module of the multifunctional satellite signal forwarding device.

10. A forwarding method applied to the multifunctional satellite signal forwarding device according to any one of claims 1 to 9, characterized in that: The method comprises: Receive outdoor satellite signals; Amplifying the received outdoor satellite signal through a two-stage amplifier circuit to obtain a two-stage amplified satellite signal; The satellite signal power of the two-stage amplification is divided into a first signal and a second signal; The first signal is power-adjusted to obtain a power-adjusted satellite signal, and the power-adjusted satellite signal is transmitted indoors, while positioning display data and a timing signal are output according to the second signal.

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