CN215375758U

CN215375758U - Electromagnetic spectrum monitoring facilities based on anti-interference TDOA location technique

Info

Publication number: CN215375758U
Application number: CN202120556265.5U
Authority: CN
Inventors: 龚晓峰; 许涛; 蔡钦
Original assignee: Chengdu Dagong Bochuang Information Technology Co ltd
Current assignee: Chengdu Dagong Bochuang Information Technology Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-31
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses an electromagnetic spectrum monitoring device based on an anti-interference TDOA (time difference of arrival) positioning technology, which relates to the technical field of electromagnetic spectrum management and comprises an electromagnetic spectrum sensor and an antenna group used in a matched mode, wherein the electromagnetic spectrum sensor comprises an alternating current filter, a switching power supply, a direct current filter, a taming crystal oscillator, a positioning module, a signal acquisition and processing unit, a radio frequency module, a radio frequency switcher, a network filter, a router, a self-checking module, a self-checking signal source, a power supply port, a grounding column, a switch, an intermediate frequency monitoring port, a network port and connectors of all the connectors; the antenna group comprises: the monitoring antenna, the networking antenna and the positioning antenna can realize networking work of a plurality of monitoring devices, can collect and position the air interference electromagnetic signals in a monitoring area by utilizing the self frequency spectrum sensing capability, the positioning capability and the high-precision timing capability and combining the arrival time difference positioning technology of the plurality of devices, and has the characteristics of strong anti-interference capability, high positioning precision and the like.

Description

Electromagnetic spectrum monitoring facilities based on anti-interference TDOA location technique

Technical Field

The utility model relates to the technical field of electromagnetic spectrum management, in particular to electromagnetic spectrum monitoring equipment based on an anti-interference TDOA (time difference of arrival) positioning technology.

Background

Under most conditions, the time, place and capacity requirements of people on communication application cannot be predicted, the radio communication is not limited by space and time, corresponding radio services are developed in a blowout mode, flexible and various means and methods can be adopted, and comprehensive high efficiency of communication scene contact and smooth and unimpeded comprehensive transmission of various information such as voice, data, images and the like are guaranteed. Meanwhile, various radio networks for civil use, military use, national defense and the like bring about complicated electromagnetic environments and accompanying problems of signal interference, frequency band occupation and the like, and how to investigate and position interference sources becomes a difficult problem in supervision. The existing frequency spectrum receiver generally has the defects of independent work, incapability of positioning interference or great positioning error, poor anti-interference capability and the like. Therefore, it is required to develop an electromagnetic spectrum monitoring device based on an anti-interference TDOA positioning technology, which has the capabilities of electromagnetic spectrum acquisition, remote networking, strong anti-interference, high-precision positioning, standard time synchronization, device clock synchronization, self-checking, and the like, so as to realize synchronous acquisition and analysis of the same interference signal source in a multi-device networking manner, and realize a positioning function according to TDOA.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides electromagnetic spectrum monitoring equipment based on an anti-interference TDOA (time difference of arrival) positioning technology.

The purpose of the utility model is realized by the following technical scheme:

an electromagnetic spectrum monitoring device based on an anti-interference TDOA (time difference of arrival) positioning technology is characterized by comprising an electromagnetic spectrum sensor and an antenna group which is matched with the electromagnetic spectrum sensor, wherein the electromagnetic spectrum sensor comprises an alternating current filter, a switching power supply, a direct current filter, a taming crystal oscillator, a positioning module, a signal acquisition and processing unit, a radio frequency module, a radio frequency switcher, a network filter, a router, a self-checking module, a self-checking signal source, a power supply port, a grounding column, a switch, an intermediate frequency monitoring port, a network port and connectors of all the circuits; the antenna group comprises: monitoring antennas, networking antennas and positioning antennas;

the monitoring antenna and the self-checking signal source are respectively connected with the radio frequency switcher; the radio frequency switcher and the taming crystal oscillator are respectively connected with the radio frequency module, and the radio frequency module is connected with the intermediate frequency monitoring port;

the positioning antenna is connected with the positioning module, and the positioning module is connected with the taming crystal oscillator;

the self-checking signal source is connected with the self-checking module, and the self-checking module and the networking antenna are respectively connected with the router; the router is connected with the network filter, and the network filter is connected with the network port;

the positioning module, the tame crystal oscillator, the self-checking module, the router and the radio frequency module are respectively connected with the signal acquisition and processing unit, the switching power supply is respectively connected with the alternating current filter and the direct current filter, and the alternating current filter is connected with the power supply port and the grounding column; the switch is connected with the switching power supply.

Preferably, the monitoring antenna is an integrated monitoring antenna within a frequency range of 20MHz-8000 MHz.

Preferably, the positioning antenna is a GPS/BD/GLO/GAL multimode combined antenna.

Preferably, the networking antenna is a 2G/3G/4G full-network antenna.

Preferably, the router comprises 2G, 3G, 4G communication modules, and the 2G, 3G, 4G communication modules are all connected to the networking antenna.

Preferably, the positioning module comprises a Beidou, GPS, GLONASS and Galileo positioning satellite unit.

Preferably, the ac filter, the dc filter and the network filter are all EMI filters.

The utility model has the beneficial effects that:

1. the router can be used for carrying out remote portable rapid networking through mobile communication networks such as 2G, 3G, 4G and the like, and data interaction is safe and stable;

2. the alternating current filter, the direct current filter and the network filter are matched with each other, so that the electromagnetic compatibility can be met, and the anti-interference capability of equipment is improved;

3. the self-checking network consisting of the radio frequency switcher, the self-checking signal source, the self-checking module and the signal acquisition and processing unit can independently judge and store self-checking data of the digital link, judge the state of the analog link and diagnose faults so as to ensure maintainability;

4. the high-precision positioning module can provide stable second-level time synchronization, and the high-precision second pulse signal provided by matching with the tame crystal oscillator can ensure the ten-nanosecond time synchronization among remote devices, so that the positioning error is reduced;

5. the high-precision frequency source after taming provided by the taming crystal oscillator can ensure the clock synchronization among the remote devices, thereby reducing the system error.

Drawings

Fig. 1 is a schematic structural diagram of an electromagnetic spectrum monitoring apparatus provided in the present invention;

in the figure: 10. monitoring an antenna; 20. positioning an antenna; 30. networking antennas; 40. a power port; 50. a ground post; 60. a switch; 70. a medium frequency monitoring port; 80. a network port; 90. an AC filter; 100. a switching power supply; 110. a DC filter; 120. domesticating crystal oscillators; 130. a positioning module; 140. a signal acquisition processing unit; 150. a radio frequency module; 160. a radio frequency switch; 170. a network filter; 180. a router; 190. a self-checking module; 200. and (4) self-checking a signal source.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

As shown in fig. 1, the present invention provides an electromagnetic spectrum monitoring device, which includes an electromagnetic spectrum sensor and an antenna set used in cooperation, wherein the electromagnetic spectrum sensor includes: the system comprises an alternating current filter 90, a switching power supply 100, a direct current filter 110, a tame crystal oscillator 120, a positioning module 130, a signal acquisition and processing unit 140, a radio frequency module 150, a radio frequency switch 160, a network filter 170, a router 180, a self-test module 190, a self-test signal source 200, a power supply port 40, a grounding pole 50, a switch 60, an intermediate frequency monitoring port 70, a network port 80 and connectors of various connectors.

The antenna group comprises: the monitoring antenna 10, the networking antenna 20 and the positioning antenna 30 are respectively used for acquiring radio signals, remote communication, satellite synchronization and positioning information and other different aspects in a detection range;

the rf switch 160 is connected to the monitoring antenna 10 and the self-checking signal source 200, and is configured to switch one of a radio signal received by an external antenna and an internal self-checking rf signal as an rf signal input; the rf module 150 is connected to the rf switch 160, and is configured to perform filtering, amplification, frequency conversion, and other processing on an input rf signal and output an intermediate frequency signal, and the rf module 150 is connected to the tame crystal oscillator 120, and is configured to ensure a very high-precision clock reference source input; the signal acquisition and processing unit 140 is connected to the radio frequency module 150, and is configured to perform signal processing and analysis on the received intermediate frequency signal and acquire and control information of other modules; the router 180 is respectively connected to the signal acquisition and processing unit 140, the self-checking module 190, and the network filter 170, and is configured to implement a link path for communication between the modules and networking capability between external devices; the self-test module 190 is respectively connected to the self-test signal source 200, the signal acquisition and processing unit 140, and the router 180, and is configured to control an internal source, and collect and store self-test information; the switching power supply 100 is respectively connected to the ac filter 90, the dc filter 110, the tame crystal oscillator 120, the positioning module 130, the signal acquisition and processing unit 140, and the rf module 150, and is configured to provide power to each module. The switch is connected with the switching power supply and used for controlling the interruption of the switching power supply.

Specifically, the monitoring antenna is an integrated monitoring antenna within a frequency range of 20MHz-8000MHz, the positioning antenna is a GPS/BD/GLO/GAL multi-mode combined antenna, and the networking antenna is a 2G/3G/4G full-network antenna.

Specifically, the taming crystal oscillator 120 has the capability of performing 10 ns-level taming on a positioning module PPS signal, has the capability of outputting a 0.01PPM frequency precision reference source, and has the capability of maintaining a satellite PPS for a long time after taming.

Specifically, the router 180 includes 2G, 3G, and 4G communication functions, and is connected to the networking antenna 30 of the device antenna group.

Specifically, the positioning module 130 includes a plurality of positioning satellite systems such as beidou, GPS, GLONASS, and Galileo.

Specifically, the frequency range of the self-test signal source 200 is matched with the radio frequency module 150 and the monitoring antenna 10.

Further, the ac filter 90, the dc filter 110, and the network filter 170 are all EMI filters, which meet seven electromagnetic compatibility requirements of the army.

The foregoing is merely a preferred embodiment of the utility model, it being understood that the embodiments described are part of the utility model, and not all of it. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The utility model is not intended to be limited to the forms disclosed herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The electromagnetic spectrum monitoring equipment based on the anti-interference TDOA (time difference of arrival) positioning technology is characterized by comprising an electromagnetic spectrum sensor and an antenna group which is matched with the electromagnetic spectrum sensor, wherein the electromagnetic spectrum sensor comprises an alternating current filter (90), a switching power supply (100), a direct current filter (110), a taming crystal oscillator (120), a positioning module (130), a signal acquisition and processing unit (140), a radio frequency module (150), a radio frequency switcher (160), a network filter (170), a router (180), a self-checking module (190), a self-checking signal source (200), a power supply port (40), a grounding column (50), a switch (60), an intermediate frequency monitoring port (70), a network port (80) and connectors of all the connectors; the antenna group comprises: the system comprises a monitoring antenna (10), a networking antenna (20) and a positioning antenna (30);

the monitoring antenna (10) and the self-checking signal source (200) are respectively connected with the radio frequency switch (160); the radio frequency switch (160) and the taming crystal oscillator (120) are respectively connected with the radio frequency module (150), and the radio frequency module (150) is connected with the intermediate frequency monitoring port (70);

the positioning antenna (20) is connected with the positioning module (130), and the positioning module (130) is connected with the taming crystal oscillator (120);

the self-checking signal source (200) is connected with the self-checking module (190), and the self-checking module (190) and the networking antenna (30) are respectively connected with the router (180); the router (180) is connected with the network filter (170), and the network filter (170) is connected with the network port (80);

the positioning module (130), the tame crystal oscillator (120), the self-checking module (190), the router (180) and the radio frequency module (150) are respectively connected with the signal acquisition and processing unit;

the switch power supply (100) is respectively connected with the alternating current filter (90) and the direct current filter (110), the alternating current filter is respectively connected with the power supply port (40) and the grounding column (50), and the switch (60) is connected with the switch power supply (100).

2. The electromagnetic spectrum monitoring device based on the anti-interference TDOA location technology as recited in claim 1, characterized in that said monitoring antenna (10) is an integrated monitoring antenna in the frequency range of 20MHz-8000 MHz.

3. The EMR monitoring device based on TDOA-immune location technology as recited in claim 1, characterized in that said location antenna (20) is a GPS/BD/GLO/GAL multimode combined antenna.

4. The electromagnetic spectrum monitoring device based on the anti-interference TDOA location technology as recited in claim 1, wherein said networking antenna (30) is a 2G/3G/4G full-network antenna.

5. The electromagnetic spectrum monitoring device based on the anti-interference TDOA location technology as recited in claim 1, wherein said router (180) comprises 2G, 3G, 4G communication modules, and said 2G, 3G, 4G communication modules are all connected to said networking antenna (30).

6. The EMR monitoring device based on TDOA antijam location technology as claimed in claim 1, wherein said location module (130) includes Beidou, GPS, GLONASS, Galileo location satellite units.

7. The TDOA location based electromagnetic spectrum monitoring device of claim 1, wherein said ac filter (90), dc filter (110), and network filter (170) are EMI filters.