CN216122446U - Reverse test station based on electric power big dipper satellite time service system - Google Patents
Reverse test station based on electric power big dipper satellite time service system Download PDFInfo
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- CN216122446U CN216122446U CN202122113764.XU CN202122113764U CN216122446U CN 216122446 U CN216122446 U CN 216122446U CN 202122113764 U CN202122113764 U CN 202122113764U CN 216122446 U CN216122446 U CN 216122446U
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Abstract
The utility model discloses a reverse test station based on an electric Beidou satellite time service system, which comprises a signal processing unit, a data transmission unit design unit, a power supply unit and an LED lamp, wherein the signal processing unit comprises a FLASH, an ADC, a DAC, an ADC, an EEPROM and a DDR which are sequentially connected with a digital processing chip capable of processing active antenna transmission signals; the data transmission unit design unit comprises a 4G module and a CP 2105; the power supply unit comprises a synchronous buck converter and a current source with a voltage stabilizing function; the utility model has the advantages that (1) BDS/GPS signals are accurately received; (2) wirelessly transmitting the signals to a data processing center through 4G signals; (3) displaying and observing signal conditions through an LED; (4) has the function of adjusting the external interface.
Description
Technical Field
The utility model relates to a test station, in particular to a reverse test station based on an electric Beidou satellite time service system.
Background
The Beidou satellite navigation system is independently developed by China, is not controlled and limited by other countries, and has better availability, dependence and safety. It has three functions of quick positioning, short communication and precise time service. The big dipper time service system's advantage does: the Beidou time service precision is better than 20-100 ns, and the precision is high; the time service system and the equipment work stably and reliably with small interference; the system has a plurality of output modes; the whole device is portable and low in consumption.
Satellite navigation is widely applied to various fields of social life, and satellite navigation receivers are often influenced by various interference signals in actual life. These interference signals are mixed with the navigation signal and the terrestrial receiver cannot receive the desired signal. After the satellite navigation signals are transmitted to the ground from the outer space by about 20000km, the power is as small as-160 dBm, and the satellite navigation signals are submerged in noise. The presence of interference has for a long time seriously threatened the stability and reliability of navigation systems. At present, the electromagnetic environment is increasingly complex, and L frequency band signals of the defense system are continuously increased.
For example, a "satellite interference source proximity verification system" disclosed in chinese patent literature, whose publication number "CN 201621181166.9" includes an auxiliary station receiving subsystem and a portable terminal proximity verification subsystem, and the position of the interference source is determined by the portable subsystem, but there is a problem that the single-dimensional subsystem is not accurate enough for determining the interference source.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reverse test station based on an electric power Beidou satellite time service system, which can position an interference source and carry out 4G signal transmission and aims to solve the problem that the interference source cannot be rapidly collected in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a reverse test station based on an electric Beidou satellite time service system comprises a signal processing unit, a data transmission unit design unit, a power supply unit and an LED lamp, wherein the signal processing unit comprises a FLASH, an ADC, a DAC, an ADC, an EEPROM and a DDR which are sequentially connected with a digital processing chip capable of processing active antenna transmission signals; the data transmission unit design unit comprises a 4G module and a CP 2105; the power supply unit comprises a synchronous buck converter and a current source with a voltage stabilizing function. The GPS signal is received through the signal processing module, the power supply unit supplies power to the signal processing unit, the LED display lamp and the data transmission system, and meanwhile the data transmission unit is supplied with power. The data transmission unit transmits the received information to a data processing central station for centralized processing through 4G mobile communication data, and the signal is received and sent through the integral test station to complete the preprocessing of the signal.
Preferably, the signal processing unit is provided with a feed network connected with the ADC and the DAC through a receiving channel. The feed network can receive BDS/GPS signals from the outside through the active antenna, and process and transmit the signals through the receiving channel.
Preferably, the signal processing unit is provided with a current detection and power switch connected to supply power to the feed network. The secondary active power supply can improve the power supply efficiency.
Preferably, the data transmission unit 4G module adopts a WH-LTE-7S4V2 chip which can be quickly integrated into a system. The transparent transmission is taken as a core, so that the bidirectional transparent data transmission between the serial port and the network can be easily realized, and the functions of a custom registration packet and a heartbeat packet are supported.
Preferably, the CP2105 of the data transfer unit has a USB debug port connectable to the outside. The purpose of the serial port can be customized.
Preferably, the WH-LTE-7S4V2 chip of the data transmission unit is provided with a fast integration module. The data transmission unit can be quickly integrated into the system of the data transmission unit.
Preferably, the power supply unit comprises a main control loop controlled in a D-CAP2 mode. A fast transient response can be provided without the need for external compensation elements.
Preferably, the LED lamp is connected with the data transmission unit in a wired mode. And outputting a signal at the LED display data transmission unit.
Therefore, the utility model has the following beneficial effects: (1) accurately receiving the signal; (2) wirelessly transmitting the signals to a data processing center through 4G signals; (3) displaying and observing signal conditions through an LED; (4) has an external interface and has an adjusting function.
Drawings
Fig. 1 is a schematic structural diagram of a signal processing unit of the present invention.
Fig. 2 is a schematic structural diagram of the data transmission unit of the present invention.
Fig. 3 is a schematic structural diagram of a power supply unit of the present invention.
Fig. 4 is a schematic product view of the LED lamp of the present invention.
Detailed Description
A reverse test station based on an electric Beidou satellite time service system is characterized by comprising a signal processing unit, a data transmission unit design unit, a power supply unit and an LED lamp, wherein the signal processing unit comprises a FLASH, an ADC, a DAC, an ADC, an EEPROM and a DDR which are sequentially connected with a digital processing chip capable of processing active antenna transmission signals; the data transmission unit design unit comprises a 4G module and a CP 2105; the power supply unit comprises a synchronous buck converter and a current source with a voltage stabilizing function. And the inlet of the active antenna receives the signal processing, supplies power to the active antenna through a feed network, and generates a local oscillation signal required by a frequency converter in a receiving channel through a frequency synthesizer. The receiving channel performs amplification, frequency conversion and filtering processing on the received Beidou satellite signals to obtain analog complex baseband signals, and the gain of the receiving channel is controlled by the output voltage of the serial DAC. And then the analog complex baseband signal output by the receiving channel is converted into a digital complex baseband signal through the ADC. And respectively converting the analog frequency difference signals generated by the frequency conversion module into digital signals through two ADCs. The data transmission unit design unit comprises a 4G module and a CP2105, and the data transmission unit is wirelessly transmitted to the data processing center through 4G. The power supply unit comprises a synchronous buck converter and a current source with a voltage stabilizing function, and supplies power to the data transmission unit, the signal processing unit and the LED lamp through the synchronous buck converter and the continuous load current. The LED lamp is connected with the signal processing unit in a wired mode. The processing condition of each unit is judged by the color or state of different lamps.
As shown in fig. 1, the signal processing unit includes a digital processing chip that can be reported to the data transmission unit. Tracking and PVT settlement are carried out on the captured satellite signals through a digital processing chip, found deception jamming signals are reported to a data transmission unit, and the signals are transmitted for the second time through the data transmission unit. As shown in fig. 2, the data transmission unit 4G module adopts a WH-LTE-7S4V2 chip that can be quickly integrated into the system. The chip has small volume and complete functions, and is suitable for various network conditions. The CP2105 of the data transfer unit has a USB debug port connectable to the outside. The USB interface can be connected with various external expansion units containing USB. The WH-LTE-7S4V2 chip of the data transmission unit is provided with a quick integration module. So that the data transmission unit can be quickly integrated on a chip. As shown in fig. 3, the power supply unit includes a main control loop controlled in D-CAP2 mode. The fast transient response can be performed without the aid of other circuits. As shown in fig. 4, the LED lamp is wired to the data transmission unit. The LED lamp is used for reflecting the signal transmitted by the data transmission unit.
The above-described embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (7)
1. A reverse test station based on an electric Beidou satellite time service system is characterized by comprising a signal processing unit, a data transmission unit design unit, a power supply unit and an LED lamp, wherein the signal processing unit comprises a FLASH, an ADC, a DAC, an ADC, an EEPROM and a DDR which are sequentially connected with a digital processing chip capable of processing active antenna transmission signals; the data transmission unit design unit comprises a 4G module and a CP 2105; the power supply unit comprises a synchronous buck converter and a current source with a voltage stabilizing function.
2. The reverse test station based on the electric Beidou satellite time service system according to claim 1, wherein the signal processing unit is provided with a feed network connected with the ADC and the DAC through a receiving channel.
3. The reverse test station based on the electric Beidou satellite time service system according to claim 1, wherein the signal processing unit is provided with a current detection and power switch which is connected with a power supply network to supply power.
4. The reverse test station based on the electric Beidou satellite time service system as claimed in claim 1, wherein the data transmission unit 4G module adopts a WH-LTE-7S4V2 chip capable of being rapidly integrated into the system.
5. The reverse test station based on the electric Beidou satellite timing system as set forth in claim 1, wherein the CP2105 of the data transmission unit is provided with a USB debugging port which can be connected with the outside.
6. The reverse test station based on the electric Beidou satellite time service system as claimed in claim 1, wherein the power supply unit comprises a main control loop controlled by a D-CAP2 mode.
7. The reverse test station based on the electric Beidou satellite time service system according to claim 1, wherein the LED lamp is in wired connection with the data transmission unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122113764.XU CN216122446U (en) | 2021-09-02 | 2021-09-02 | Reverse test station based on electric power big dipper satellite time service system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122113764.XU CN216122446U (en) | 2021-09-02 | 2021-09-02 | Reverse test station based on electric power big dipper satellite time service system |
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| Publication Number | Publication Date |
|---|---|
| CN216122446U true CN216122446U (en) | 2022-03-22 |
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| CN202122113764.XU Active CN216122446U (en) | 2021-09-02 | 2021-09-02 | Reverse test station based on electric power big dipper satellite time service system |
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| CN (1) | CN216122446U (en) |
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2021
- 2021-09-02 CN CN202122113764.XU patent/CN216122446U/en active Active
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