CN110581730A - Electromagnetic spectrum distribution diagram and generation method and device thereof - Google Patents
Electromagnetic spectrum distribution diagram and generation method and device thereof Download PDFInfo
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- CN110581730A CN110581730A CN201910818219.5A CN201910818219A CN110581730A CN 110581730 A CN110581730 A CN 110581730A CN 201910818219 A CN201910818219 A CN 201910818219A CN 110581730 A CN110581730 A CN 110581730A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0892—Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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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
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18545—Arrangements for managing station mobility, i.e. for station registration or localisation
- H04B7/18547—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mathematical Physics (AREA)
- Transmitters (AREA)
Abstract
the application relates to a method for generating an electromagnetic spectrum distribution diagram, which comprises the following steps: acquiring radio frequency parameters of a plurality of frequency utilization devices, wherein the radio frequency parameters comprise working frequency bands, transmitting power, transmitting harmonic suppression and receiving sensitivity; and generating an electromagnetic spectrum distribution diagram according to the radio frequency parameters, wherein the horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency band, and the horizontal axis of the electromagnetic spectrum distribution diagram is the transmission power, the transmission harmonic suppression and the receiving sensitivity which are distributed on two sides of the horizontal axis and correspond to the working frequency band. The electromagnetic spectrum distribution diagram generated by the electromagnetic spectrum distribution diagram generation method can not only reflect the frequency information of the transmitting equipment and the receiving equipment on the airplane platform, but also reflect the harmonic characteristics, the energy characteristics and the isolation requirements of the transmitting equipment and the receiving equipment, and the overall expression form is concise and visual.
Description
Technical Field
The application belongs to the technical field of airplane electromagnetic management, and particularly relates to an electromagnetic spectrum distribution graph and a generation method and device thereof.
Background
When platforms such as airplanes, ships, space vehicles and vehicles are designed for spectrum compatibility and electromagnetic compatibility, generally, the spectrum distribution of the platforms is analyzed in a development stage, and antenna layout, radio frequency management and electromagnetic compatibility design are performed according to the spectrum distribution condition, so that transmitting equipment and receiving equipment on the platforms work in a compatible mode as far as possible.
However, the existing electromagnetic spectrum distribution diagram generally only lists the fundamental frequency distribution of the transmitting device or the receiving device, and does not reflect the harmonic frequency, the transmitting power, the receiving sensitivity and the isolation requirement of the transmitting device and the receiving device, and the antenna layout, the radio frequency management and the electromagnetic compatibility of the platform cannot be quantitatively analyzed and designed according to the existing electromagnetic spectrum distribution diagram.
Disclosure of Invention
it is an object of the present application to provide an electromagnetic spectrum profile, a method and apparatus for generating the same, which solves or mitigates at least one of the problems of the background art.
On one hand, the technical scheme of the application is as follows: a method of generating an electromagnetic spectrum profile, the method comprising:
Acquiring radio frequency parameters of a plurality of frequency utilization devices, wherein the radio frequency parameters comprise working frequency bands, transmitting power, transmitting harmonic suppression and receiving sensitivity;
and generating an electromagnetic spectrum distribution diagram according to the radio frequency parameters, wherein the horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency band, and the horizontal axis of the electromagnetic spectrum distribution diagram is the transmission power, the transmission harmonic suppression and the receiving sensitivity which are distributed on two sides of the horizontal axis and correspond to the working frequency band.
in an embodiment of the present application, the electromagnetic spectrum distribution map is generated as a two-dimensional plane map and is generated as three axes.
In an embodiment of the present application, the transmit power is located above the horizontal axis, and the receive sensitivity is located below the horizontal axis.
In one embodiment of the present application, the transmission power, the transmission harmonic suppression, and the reception sensitivity corresponding to the operating frequency band are represented by line segments.
On the other hand, the technical scheme provided by the application is as follows: an apparatus for generating an electromagnetic spectrum profile, the apparatus comprising:
The radio frequency parameter acquisition module is used for acquiring radio frequency parameters of a plurality of frequency devices, wherein the radio frequency parameters comprise working frequency bands, transmitting power, transmitting harmonic suppression and receiving sensitivity;
And the electromagnetic spectrum distribution diagram generating module is used for generating an electromagnetic spectrum distribution diagram according to the radio frequency parameters, wherein the horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency band, and the horizontal axis of the electromagnetic spectrum distribution diagram is the transmitting power, the transmitting harmonic suppression and the receiving sensitivity which are distributed on two sides of the horizontal axis and correspond to the working frequency band.
In an embodiment of the present application, the electromagnetic spectrum distribution map generated is a two-dimensional plane map and is three-axis.
In an embodiment of the present application, the transmit power is located above the horizontal axis, and the receive sensitivity is located below the horizontal axis.
In one embodiment of the present application, the transmission power, the transmission harmonic suppression, and the reception sensitivity corresponding to the operating frequency band are represented by line segments.
In a third aspect, the technical solution provided by the present application is: an electromagnetic spectrum profile generated according to any one of the electromagnetic spectrum profile generation methods described above.
In a final aspect, the present application provides the following technical solutions: a method of electromagnetic isolation of a frequency-using device, the method comprising:
Generating the electromagnetic spectrum profile according to the electromagnetic spectrum profile generation method as described in any one of the above;
Determining whether there are regions of frequency overlap in the electromagnetic spectrum profile;
if the overlapped area exists, adjusting the radio frequency parameter of at least one frequency device corresponding to the overlapped area; if there is no overlapping area, no adjustment is made.
The electromagnetic spectrum distribution diagram and the generation method thereof can reflect the frequency information of the transmitting equipment and the receiving equipment on the airplane platform, can also reflect the harmonic wave characteristics, the energy characteristics and the isolation requirements of the transmitting equipment and the receiving equipment, and have a concise and visual integral expression form.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
Fig. 1 is a flowchart of a method for generating an electromagnetic spectrum distribution map according to the present application.
Fig. 2 is a diagram of a component of an electromagnetic spectrum distribution map generation apparatus according to the present application.
FIG. 3 is a graph of electromagnetic spectrum distribution according to an embodiment of the present application.
FIG. 4 is a graph of electromagnetic spectrum distribution for another embodiment of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to overcome the current situation that the electromagnetic spectrum distribution diagram in the prior art contains less information and cannot perform quantitative analysis and design on the antenna layout, the radio frequency management and the electromagnetic compatibility of an aircraft platform according to the information, the application provides the electromagnetic spectrum distribution diagram and the generation method thereof so as to embody the spectrum distribution characteristics, the harmonic characteristics, the energy characteristics and the isolation requirements and provide reference for the antenna layout, the radio frequency management and the electromagnetic compatibility design of the platform.
As shown in fig. 1, the present application firstly provides a method for generating an electromagnetic spectrum distribution diagram capable of embodying harmonic characteristics, energy characteristics and isolation requirements, where the method 10 includes:
S11: and acquiring radio frequency parameters of a plurality of frequency utilization devices, wherein the radio frequency parameters comprise working frequency bands, transmitting power, transmitting harmonic suppression and receiving sensitivity.
Firstly, frequency-using equipment and radio frequency parameters thereof are collected, the receiving and sending states of the frequency-using equipment on the airplane platform are determined by analyzing the frequency-using equipment, and the radio frequency parameters of the frequency-using equipment on the airplane platform are collected and sorted, wherein the main information of the radio frequency parameters comprises a working frequency band, transmitting power, transmitting harmonic suppression and receiving sensitivity.
S12: and generating an electromagnetic spectrum distribution diagram according to the radio frequency parameters, wherein the horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency range of the frequency utilization equipment, and the horizontal axis of the electromagnetic spectrum distribution diagram is the transmitting power, the transmitting harmonic suppression and the receiving sensitivity which are distributed on two sides of the horizontal axis and correspond to the working frequency range of the frequency utilization equipment.
In the application, the generated electromagnetic spectrum distribution diagram is displayed by adopting a planar three-axis coordinate, a horizontal axis F is an operating frequency band, a vertical axis is divided into an upper part and a lower part, an upper vertical axis E represents the power of the frequency spectrum of the transmitting equipment, and a lower vertical axis S represents the sensitivity of the receiving equipment. And if the frequency bands of the transmitting equipment and the receiving equipment are overlapped, the separation requirement of the compatible work of the transmitting equipment and the receiving equipment is determined by subtracting the coordinate of the longitudinal axis S of the receiving equipment from the coordinate of the longitudinal axis E of the corresponding transmitting equipment.
As shown in fig. 2, the present application further provides an electromagnetic spectrum distribution diagram generating apparatus, where the generating apparatus 20 includes: a radio frequency parameter obtaining module 21, configured to obtain radio frequency parameters of multiple frequency devices, where the radio frequency parameters include a working frequency band, a transmission power, a transmission harmonic suppression, and a receiving sensitivity; the electromagnetic spectrum distribution diagram generating module 21 is configured to generate an electromagnetic spectrum distribution diagram according to the radio frequency parameter, where a horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency band, and horizontal axes of the electromagnetic spectrum distribution diagram are transmission power, transmission harmonic suppression, and reception sensitivity that are distributed on both sides of the horizontal axis and correspond to the working frequency band.
similarly, in the generating apparatus 20 of the present application, the generated electromagnetic spectrum distribution map is the same as the electromagnetic spectrum distribution map generated by the electromagnetic spectrum distribution map generating method described above, that is, the generated electromagnetic spectrum distribution map is displayed by using a planar three-axis coordinate, the horizontal axis F is an operating frequency band, the vertical axis is divided into an upper portion and a lower portion, the upper vertical axis E represents the power of the spectrum of the transmitting device, and the lower vertical axis S represents the sensitivity of the receiving device. And if the frequency bands of the transmitting equipment and the receiving equipment are overlapped, the separation requirement of the compatible work of the transmitting equipment and the receiving equipment is determined by subtracting the coordinate of the longitudinal axis S of the receiving equipment from the coordinate of the longitudinal axis E of the corresponding transmitting equipment.
As shown in fig. 3, the electromagnetic spectrum distribution graph generated by the method and apparatus of the present application is an electromagnetic spectrum distribution graph, and the electromagnetic spectrum distribution graph of the present application not only can embody frequency information of a transmitting device and a receiving device on a magnetic platform, but also can embody harmonic characteristics, energy characteristics and isolation requirements of the transmitting device and the receiving device, and the overall expression form is concise and intuitive, and the electromagnetic spectrum distribution graph of the present application can quantitatively analyze the spectrum distribution and the collision condition of the platform. And further provides reference for the radio frequency compatibility and electromagnetic compatibility design, antenna layout, radio frequency management and electromagnetic compatibility quantitative design of platforms such as airplanes, ships, space vehicles and vehicles.
It should be noted that, the electromagnetic spectrum distribution map in the present application may also be drawn by using a microsoftvisio, a word, a powerpoint, or other software.
Finally, the application also provides an electromagnetic isolation method of the frequency utilization equipment, which specifically comprises the following steps:
First generating an electromagnetic spectrum profile according to an electromagnetic spectrum profile generation method as described above in the present application;
Then, determining whether the electromagnetic spectrum distribution diagram has a frequency overlapping region;
if the overlapped area exists, adjusting the radio frequency parameter of at least one frequency device corresponding to the overlapped area; if there is no overlapping area, no adjustment is made.
The following embodiments are further described and illustrated in the accompanying tables and drawings.
See table 1 for some airplane platform frequency equipment table and its parameters. The aircraft platform mainly comprises frequency-using equipment including an ultra-short wave radio station, a course beacon, a gliding beacon, a Takang navigation device and a GPS receiver, wherein the ultra-short wave radio station and the Takang navigation device have transmitting and receiving functions, and the course beacon, the gliding beacon and the GPS receiver only have receiving functions.
TABLE 1 frequency device table for certain aircraft platform and parameters thereof
As shown in fig. 4, the electromagnetism is generated by the obtained frequency device for the airplane platform and the parameters thereof.
as can be seen from fig. 4, there is an overlap between the fundamental frequency band (reception) transmitted by the ultrashort wave radio station and the working frequency band (reception) of the heading beacon, if it is to be ensured that the heading beacon is not interfered during transmission of the ultrashort wave radio station, the reception frequency band of the heading beacon should be adjusted, the isolation between transmission and reception should reach 40- (-88) to 128dB, the maximum isolation between the ultrashort wave radio station antenna and the heading beacon antenna should be ensured as much as possible during antenna layout, if the isolation requirement cannot be met through antenna layout, other radio frequency management measures should be taken, for example, the frequency point transmitted by the ultrashort wave radio station avoids the working frequency band of the heading beacon, or the ultrashort wave radio station transmission and the heading beacon reception are prevented from working simultaneously in time domain.
Similarly, the second harmonic of the ultrashort wave radio station falls in the working frequency band of the gliding beacon, and corresponding radio frequency management measures should be taken to ensure the compatibility of the two, for example, the gliding beacon with the working frequency band between 600 GHz and 900GHz can be selected.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for generating an electromagnetic spectrum distribution map, characterized in that the method comprises
Acquiring radio frequency parameters of a plurality of frequency utilization devices, wherein the radio frequency parameters comprise working frequency bands, transmitting power, transmitting harmonic suppression and receiving sensitivity;
and generating an electromagnetic spectrum distribution diagram according to the radio frequency parameters, wherein the horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency band, and the horizontal axis of the electromagnetic spectrum distribution diagram is the transmission power, the transmission harmonic suppression and the receiving sensitivity which are distributed on two sides of the horizontal axis and correspond to the working frequency band.
2. The method of generating an electromagnetic spectrum profile as set forth in claim 1, wherein the electromagnetic spectrum profile generated is a two-dimensional plan view and is three-axis.
3. the method of generating an electromagnetic spectrum profile of claim 1, wherein said transmit power is above said horizontal axis and said receive sensitivity is below said horizontal axis.
4. the method of generating an electromagnetic spectrum profile of claim 1, wherein transmit power, transmit harmonic rejection, and receive sensitivity corresponding to the operating frequency band are represented by line segments.
5. An apparatus for generating electromagnetic spectrum distribution map, the apparatus comprising
the radio frequency parameter acquisition module is used for acquiring radio frequency parameters of a plurality of frequency devices, wherein the radio frequency parameters comprise working frequency bands, transmitting power, transmitting harmonic suppression and receiving sensitivity;
and the electromagnetic spectrum distribution diagram generating module is used for generating an electromagnetic spectrum distribution diagram according to the radio frequency parameters, wherein the horizontal axis of the electromagnetic spectrum distribution diagram is the working frequency band, and the horizontal axis of the electromagnetic spectrum distribution diagram is the transmitting power, the transmitting harmonic suppression and the receiving sensitivity which are distributed on two sides of the horizontal axis and correspond to the working frequency band.
6. The apparatus for generating an electromagnetic spectrum profile as set forth in claim 5, wherein the electromagnetic spectrum profile generated is a two-dimensional plan view and is three-axis.
7. The apparatus for generating an electromagnetic spectrum profile as set forth in claim 5, wherein said transmit power is above said horizontal axis and said receive sensitivity is below said horizontal axis.
8. the apparatus for generating an electromagnetic spectrum profile as set forth in claim 5, wherein the transmission power, the transmission harmonic rejection, and the reception sensitivity corresponding to the operating frequency band are represented by line segments.
9. An electromagnetic spectrum profile generated according to the electromagnetic spectrum profile generation method of any one of claims 1 to 4.
10. An electromagnetic isolation method for a frequency-using device, comprising
Generating the electromagnetic spectrum profile according to the electromagnetic spectrum profile generating method as claimed in any one of claims 1 to 4;
Determining whether there are regions of frequency overlap in the electromagnetic spectrum profile;
if the overlapped area exists, adjusting the radio frequency parameter of at least one frequency device corresponding to the overlapped area; if there is no overlapping area, no adjustment is made.
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| CN201910818219.5A CN110581730A (en) | 2019-08-30 | 2019-08-30 | Electromagnetic spectrum distribution diagram and generation method and device thereof |
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| CN201910818219.5A CN110581730A (en) | 2019-08-30 | 2019-08-30 | Electromagnetic spectrum distribution diagram and generation method and device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113641186A (en) * | 2021-08-08 | 2021-11-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Unmanned aerial vehicle formation radio frequency compatibility design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707143A (en) * | 2012-05-31 | 2012-10-03 | 北京航空航天大学 | Method for extracting harmonic components from electromagnetic spectrum by using gray multi-cycle model |
| CN103869191A (en) * | 2014-03-17 | 2014-06-18 | 中国航空无线电电子研究所 | Aircraft electromagnetic environment safety margin assessment regulation method |
-
2019
- 2019-08-30 CN CN201910818219.5A patent/CN110581730A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707143A (en) * | 2012-05-31 | 2012-10-03 | 北京航空航天大学 | Method for extracting harmonic components from electromagnetic spectrum by using gray multi-cycle model |
| CN103869191A (en) * | 2014-03-17 | 2014-06-18 | 中国航空无线电电子研究所 | Aircraft electromagnetic environment safety margin assessment regulation method |
Non-Patent Citations (1)
| Title |
|---|
| 赵辉: "《系统电磁兼容》", 30 April 2019 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113641186A (en) * | 2021-08-08 | 2021-11-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Unmanned aerial vehicle formation radio frequency compatibility design method |
| CN113641186B (en) * | 2021-08-08 | 2023-11-28 | 中国航空工业集团公司沈阳飞机设计研究所 | Unmanned aerial vehicle formation radio frequency compatibility design method |
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Application publication date: 20191217 |