Single Beidou signal regeneration system
By designing a single BeiDou signal regeneration system, the security threat to the GPS timing system was resolved, single BeiDou timing was achieved, and the security and reliability of timing were improved.
Patent Information
- Application Number
- CN202520268543.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-18
AI Technical Summary
In existing technologies, GPS timing systems are vulnerable to security threats such as being shut down or sending incorrect timing information, and it is impossible to extract BeiDou signals separately for timing through analog filters.
Design a single BeiDou signal regeneration system, including a GNSS antenna, an amplifier, a single BeiDou receiver module, a signal regeneration module, and an output module. The system receives, amplifies, extracts, and regenerates BeiDou signals to generate new BeiDou or GPS signals for output.
It has achieved single-Dou time synchronization, which has improved the security and reliability of domestic time synchronization and ensured the accuracy and reliability of time data.
Smart Images
Figure CN223897781U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to satellite communication technical field, especially a single beidou signal regeneration system. BACKGROUND
[0002] With the rapid development of communication industry, signal transponder system has been more widely applied in the high-precision and high-tech application fields such as communication, deep space exploration, national defense, etc. In the key fields such as electric power, telecommunication and finance, GPS timing has been widely relied on. Since GPS is controlled by other parties, there is a risk of being closed or sending incorrect timing information, which threatens the safety of domestic use.
[0003] Therefore, it is crucial for those skilled in the art to design a single beidou signal regeneration system that can receive beidou satellite signals as a timing source for single beidou timing. CONTENT OF THE UTILITY MODEL
[0004] The technical problem to be solved by the embodiments of the utility model is to provide a single beidou signal regeneration system that can receive beidou satellite signals as a timing source for single beidou timing, to solve the problem of safety threats in the prior art.
[0005] The utility model discloses a single beidou signal regeneration system, and the scheme is that including: GNSS antenna, amplifier, single beidou receiving module, signal regeneration module and output module, the GNSS antenna is used to receive outdoor satellite signal, the input of amplifier is connected with the GNSS antenna, for amplifying outdoor satellite signal, the input of single beidou receiving module is connected with the output of amplifier, for extracting beidou signal in outdoor satellite signal, the input of signal regeneration module is connected with the output of single beidou receiving module, for regenerating the beidou signal of extraction as new beidou signal or GPS signal, the input of output module is connected with the output of signal regeneration module, for outputting new beidou signal or GPS signal.
[0006] Optionally, the signal regeneration module includes a ranging unit, the input of the ranging unit is connected with the output of the single beidou receiving module, for generating a corresponding ranging code signal.
[0007] Optionally, the signal regeneration module further includes a single navigation message unit, the input of the single navigation message unit is connected with the output of the single beidou receiving module, for generating a corresponding navigation message.
[0008] Optionally, the signal regeneration module further includes a carrier unit, the input of the carrier unit is connected with the output of the single beidou receiving module, for generating a corresponding sinusoidal carrier signal.
[0009] Optionally, the signal regeneration module further comprises an FPGA unit, which is connected with the ranging unit, the single navigation message unit and the carrier unit respectively, for modulating the ranging code signal and the navigation message into a sinusoidal carrier to generate a new Beidou signal or a GPS signal.
[0010] Optionally, the new Beidou signal is a Beidou B3i signal.
[0011] Optionally, the GPS signal is a GPS L1 frequency band signal.
[0012] Optionally, the output module is a transmitting antenna.
[0013] Optionally, the output module is a network cable, which is connected with the signal regeneration module and an external BBU device respectively.
[0014] Optionally, the amplifier is an LNA amplifier, which is connected with the GNSS antenna through a radio frequency line.
[0015] Compared with the prior art, the single Beidou signal regeneration system has the advantages that: the single Beidou signal regeneration system is designed, which comprises a GNSS antenna, an amplifier, a single Beidou receiving module, a signal regeneration module and an output module; the GNSS antenna receives an outdoor satellite signal; the amplifier is connected with the GNSS antenna to amplify the outdoor satellite signal; the single Beidou receiving module is connected with the amplifier to extract a Beidou signal in the outdoor satellite signal; the signal regeneration module is connected with the single Beidou receiving module to regenerate the extracted Beidou signal into a new Beidou signal or a GPS signal; and the output module is connected with the signal regeneration module to output the new Beidou signal or the GPS signal; thus, the single Beidou time service is realized, and the safety of domestic time service is higher. BRIEF DESCRIPTION OF DRAWINGS
[0016] The technical solutions of the utility model will be further explained in detail below in combination with the drawings and embodiments, and the drawings are as follows:
[0017] Figure 1 is the system block diagram of the single Beidou signal regeneration system provided by the utility model embodiment. Figure 1 ;
[0018] Figure 2 is the system block diagram of the single Beidou signal regeneration system provided by the utility model embodiment. Figure 2 .
[0019] The reference signs in the drawings are as follows:
[0020] 100, GNSS antenna; 200, amplifier; 300, single Beidou receiving module; 400, signal regeneration module; 500, output module; 410, ranging unit; 420, single navigation message unit; 430, carrier unit; 440, FPGA unit. DETAILED DESCRIPTION
[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The preferred embodiments of the present application will be described in detail with reference to the drawings.
[0022] As shown in Figure 1 and Figure 2 , the present application provides a specific embodiment of a single Beidou signal regeneration system.
[0023] A single Beidou signal regeneration system, referring to Figure 1 , comprises a GNSS antenna 100, an amplifier 200, a single Beidou receiving module 300, a signal regeneration module 400, and an output module 500; the GNSS antenna 100 is used to receive outdoor satellite signals, the input end of the amplifier 200 is connected with the GNSS antenna 100, the output end of the amplifier 200 is connected with the input end of the single Beidou receiving module 300, the output end of the single Beidou receiving module 300 is connected with the input end of the signal regeneration module 400, and the output end of the signal regeneration module 400 is connected with the output module 500.
[0024] Among them, the GNSS antenna 100 receives outdoor satellite signals and transmits the received outdoor satellite signals to the amplifier 200 through a radio frequency line, the amplifier 200 amplifies the outdoor satellite signals transmitted by the GNSS antenna 100, transmits the amplified outdoor satellite signals to the single Beidou receiving module 300, the single Beidou receiving module 300 extracts the Beidou signal in the amplified outdoor satellite signals, further analyzes the Beidou time information in the Beidou signal, and further generates a pulse signal from the reference time information as a second pulse, under the drive of the second pulse of the single Beidou receiving module 300, the signal regeneration module 400 calculates the extracted Beidou signal and generates corresponding ranging code signals and navigation messages, and regenerates new Beidou signals or GPS signals through frequency conversion; finally, the regenerated new Beidou signals or GPS signals are transmitted to the indoor through a wireless manner, or connected to the BBU equipment in the machine room through a wired connection manner, so as to perform single Beidou time service.
[0025] At present, the signal forwarding system is more widely used in the application fields of high-precision technology such as communication, deep space exploration, national defense, etc., especially in the key fields of electric power, telecommunications, finance, etc., which once widely relied on GPS timing, but GPS is controlled by other parties, and there is a risk of being closed or sending incorrect timing information, which threatens the safety of domestic use.
[0026] Since the outdoor Beidou signal and GPS signal cannot be extracted separately by an analog filter to form a single Beidou signal, if the original GPS timing is to be changed to Beidou timing, the Beidou signal in the outdoor satellite signal needs to be extracted by the single Beidou receiving module 300 as a timing source, and through signal regeneration processing, a new Beidou signal or GPS signal is regenerated and provided to the BBU equipment in the indoor environment or machine room for Beidou timing.
[0027] In this embodiment, a single Beidou signal regeneration system is designed, which includes a GNSS antenna 100, an amplifier 200, a single Beidou receiving module 300, a signal regeneration module 400, and an output module 500; the GNSS antenna 100 receives outdoor satellite signals, the amplifier 200 is connected with the GNSS antenna 100 to amplify the outdoor satellite signals, the single Beidou receiving module 300 is connected with the amplifier 200 to extract and analyze the Beidou signal in the outdoor satellite signal and generate a pulse signal based on the Beidou time information, the signal regeneration module 400 is connected with the single Beidou receiving module 300 to regenerate the extracted Beidou signal into a new Beidou signal or GPS signal under the driving of the pulse signal; the output module 500 is connected with the signal regeneration module 400 to output the new Beidou signal or GPS signal; this scheme realizes single Beidou timing, making domestic timing safer.
[0028] In one of the embodiments, referring to Figure 2 The signal regeneration module 400 includes a ranging unit 410, the input end of the ranging unit 410 is connected with the output end of the single Beidou receiving module 300, for generating a corresponding ranging code signal under the driving of the pulse signal.
[0029] Specifically, the ranging unit 410 can measure the distance between the satellite and the ground station, thereby helping to determine the position of the satellite and providing accurate positioning and navigation information; the ranging unit 410 can also be used to calibrate the time delay of signal transmission to ensure the accuracy and reliability of time data; after the single Beidou receiving module 300 generates a pulse signal based on the Beidou time signal, the pulse signal can drive the ranging unit 410 to generate a corresponding ranging code signal, and the ranging code is used to accurately measure the distance between the satellite and the ground station, thereby making the positioning, navigation and time information more accurate and reliable.
[0030] In one of the embodiments, referring to Figure 2The signal regeneration module 400 further comprises a single navigation message unit 420, an input end of the single navigation message unit 420 being connected with an output end of the single Beidou receiving module 300, so as to generate a corresponding navigation message under the driving of the pulse signal.
[0031] Specifically, the single navigation message unit 420 is responsible for generating, storing and broadcasting the navigation message; after the single Beidou receiving module 300 generates the pulse signal based on the Beidou time signal, the pulse signal can drive the single navigation message unit 420 to generate a corresponding navigation message, the navigation message including ephemeris data of the satellite (such as satellite position, velocity, time, etc.), so as to facilitate subsequent calculation of the accurate position of the satellite by using the ephemeris data, and the navigation message further contains an accurate time stamp, for subsequent time synchronization and positioning calculation.
[0032] In one of the embodiments, referring to Figure 2 The signal regeneration module 400 further comprises a carrier unit 430, an input end of the carrier unit 430 being connected with an output end of the single Beidou receiving module 300, so as to generate a corresponding sinusoidal carrier signal under the driving of the pulse signal.
[0033] Specifically, the carrier unit 430 is used for generating, modulating and transmitting the carrier signal, after the single Beidou receiving module 300 generates the pulse signal based on the Beidou time signal, the pulse signal can drive the carrier unit 430 to generate a sinusoidal carrier signal of a specific frequency, as a carrier for information transmission, by modulating the navigation message and the ranging code onto the sinusoidal carrier, a signal available for transmission can be formed.
[0034] In one of the embodiments, referring to Figure 2 The signal regeneration module 400 further comprises an FPGA unit 440, the FPGA unit 440 being connected with the ranging unit 410, the single navigation message unit 420 and the carrier unit 430 respectively, so as to modulate the ranging code signal and the navigation message into the sinusoidal carrier, to generate a new Beidou signal or a GPS signal.
[0035] Specifically, the FPGA unit 440 adopts an integrated circuit form, the FPGA unit 440 is connected with the ranging unit 410 to extract the ranging code signal, the FPGA unit 440 is connected with the single navigation message unit 420 to extract the navigation message, and the FPGA unit 440 is further connected with the carrier unit 430 to obtain the sinusoidal carrier signal, and modulate the extracted ranging code signal and navigation message into the sinusoidal carrier generated by the carrier unit 430, to form a new Beidou signal or a GPS signal.
[0036] The FPGA unit 440 first spreads the ranging code signal and the navigation message, modulates and shifts the frequency to the sinusoidal carrier signal to generate the intermediate frequency signal of the corresponding satellite, and then converts the intermediate frequency signal to form a single new Beidou signal or GPS signal.
[0037] In one embodiment, the new Beidou signal is a Beidou B3i signal, which is a signal in the Beidou satellite navigation system. The Beidou B3i signal has a high frequency to improve the signal penetration ability and anti-interference ability, thereby improving the positioning accuracy and reliability. The Beidou B3i signal supports multi-system integrated navigation and can be integrated with other satellite navigation systems (such as GPS satellite navigation system, GLONASS satellite navigation system, Galileo satellite navigation system, etc.) for positioning, so that the positioning accuracy and reliability are higher.
[0038] In one embodiment, the GPS signal is a GPS L1 frequency band signal, and the frequency of the GPS L1 frequency band signal is 1575.42 MHz, which can be used for civilian positioning and navigation. The GPS signal also supports multi-system integrated navigation and can be integrated with other satellite navigation systems (such as Beidou satellite navigation system, GLONASS satellite navigation system, Galileo satellite navigation system, etc.) for positioning, so that the positioning accuracy and reliability are higher.
[0039] In one embodiment, the output module 500 is a transmitting antenna to realize the purpose of wireless coverage of satellite signals. For some areas that cannot directly receive satellite signals, such as mountainous areas, urban canyons, indoor or underground spaces, etc. The transmitting antenna can receive the new Beidou signal or the GPS signal and transmit it outward to expand the signal coverage range.
[0040] In one embodiment, the output module 500 is a network cable, which is connected to the signal regeneration module 400 and the external BBU device. The new Beidou signal or the GPS signal can be divided into multiple signals by a passive distribution circuit, and then transmitted to multiple external BBU devices through the network cable connection.
[0041] In one embodiment, the amplifier 200 is an LNA amplifier 200, which is connected to the GNSS antenna 100 through a radio frequency line. The LNA amplifier 200 can amplify the outdoor satellite signal from the GNSS antenna 100, and has a low noise level, which can effectively ensure the sensitivity and signal reception performance of the system.
[0042] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit them, and for those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently; all these modifications and replacements should belong to the protection scope of the claims of the present application.
Claims
1. A single BeiDou signal regeneration system, characterized in that, include: GNSS antenna, amplifier, single BeiDou receiver module, signal regeneration module, and output module; The GNSS antenna is used to receive outdoor satellite signals. The input terminal of the amplifier is connected to the GNSS antenna to amplify the outdoor satellite signals. The input terminal of the single BeiDou receiver module is connected to the output terminal of the amplifier to extract the BeiDou signal from the outdoor satellite signals. The input terminal of the signal regeneration module is connected to the output terminal of the single BeiDou receiver module to regenerate the extracted BeiDou signal into a new BeiDou signal or GPS signal. The input terminal of the output module is connected to the output terminal of the signal regeneration module to output the new BeiDou signal or GPS signal.
2. The single BeiDou signal regeneration system according to claim 1, characterized in that, The signal regeneration module includes a ranging unit, the input of which is connected to the output of the single Beidou receiver module to generate a corresponding ranging code signal.
3. The single BeiDou signal regeneration system according to claim 2, characterized in that, The signal regeneration module further includes a single navigation message unit, the input of which is connected to the output of the single Beidou receiver module to generate a corresponding navigation message.
4. The single BeiDou signal regeneration system according to claim 3, characterized in that, The signal regeneration module further includes a carrier unit, the input of which is connected to the output of the single Beidou receiver module to generate a corresponding sinusoidal carrier.
5. The single BeiDou signal regeneration system according to claim 4, characterized in that, The signal regeneration module further includes an FPGA unit, which is connected to the ranging unit, the single navigation message unit and the carrier unit respectively, to modulate the ranging code signal and the navigation message onto a sinusoidal carrier to generate a new BeiDou signal or GPS signal.
6. The single BeiDou signal regeneration system according to claim 1, characterized in that, The new BeiDou signal is the BeiDou B3i signal.
7. The single BeiDou signal regeneration system according to claim 1, characterized in that, The GPS signal is a GPS L1 band signal.
8. The single BeiDou signal regeneration system according to claim 1, characterized in that, The output module is a transmitting antenna.
9. The single BeiDou signal regeneration system according to claim 1, characterized in that, The output module is a network cable, which is connected to the signal regeneration module and the external BBU device.
10. The single BeiDou signal regeneration system according to claim 1, characterized in that, The amplifier is an LNA amplifier, which is connected to the GNSS antenna via an RF line.