CN114280956A - Three-dimensional scene dynamic modeling method and system for radio frequency simulation darkroom - Google Patents
Three-dimensional scene dynamic modeling method and system for radio frequency simulation darkroom Download PDFInfo
- Publication number
- CN114280956A CN114280956A CN202111581136.2A CN202111581136A CN114280956A CN 114280956 A CN114280956 A CN 114280956A CN 202111581136 A CN202111581136 A CN 202111581136A CN 114280956 A CN114280956 A CN 114280956A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- array
- darkroom
- frequency simulation
- size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000013439 planning Methods 0.000 claims abstract description 30
- 238000004364 calculation method Methods 0.000 claims abstract description 22
- 230000005855 radiation Effects 0.000 claims description 43
- 238000012423 maintenance Methods 0.000 claims description 17
- 230000000007 visual effect Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000013523 data management Methods 0.000 description 4
- 238000013499 data model Methods 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000005477 standard model Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a three-dimensional scene dynamic modeling method and a three-dimensional scene dynamic modeling system for a radio frequency simulation darkroom. The method comprises the following steps: establishing a three-dimensional model by adopting a self-established model library and/or a dynamic self-established model and loading the three-dimensional model into a scene; planning the dimensions of the emergent frequency simulation darkroom in the length direction, the width direction and the height direction; based on the length, width and height of the radio frequency simulation darkroom, calculating the position and size characteristics of the main reflecting area according to a Fresnel formula; and generating a three-dimensional characteristic cloud picture of the main reflecting area according to the position and size characteristics of the main reflecting area. The invention realizes the dynamic generation of the three-dimensional scene by utilizing the self-built model base and the dynamic self-modeling, improves the modeling speed, completes the automatic division of the region and the performance calculation of the related region based on the three-dimensional scene model, realizes the real-time automatic generation of the model, combines the performance calculation part with the real-time dynamic model, and increases the confidence coefficient of the calculation result.
Description
Technical Field
The invention relates to the field of radio frequency simulation, in particular to a three-dimensional scene dynamic modeling method and a three-dimensional scene dynamic modeling system for a radio frequency simulation darkroom.
Background
The radio frequency simulation darkroom belongs to a semi-physical simulation test simulation system and has the characteristics of high investment cost and long construction period. The construction of the test simulation system is more careful, and the situation that the performance cannot meet the expected requirement due to insufficient early demonstration work is prevented.
The prior early demonstration process aiming at radio frequency simulation darkroom construction mainly comprises the aspects of structural model design, performance calculation analysis and the like. The structural model design is mainly based on three-dimensional modeling software, the design period is long, automatic modeling cannot be carried out according to requirements, and real-time dynamic generation is realized. The performance analysis and calculation part has low adaptability with the model and poor display effect, and visual demonstration and verification links are lacked in demonstration and test stages.
Disclosure of Invention
The invention aims to provide a three-dimensional scene dynamic modeling method and a three-dimensional scene dynamic modeling system for a radio frequency simulation darkroom, which can complete the dynamic modeling process of a three-dimensional scene according to requirements, improve the modeling speed, realize the real-time automatic generation of a model, combine a performance calculation part with a real-time dynamic model and increase the confidence coefficient of a calculation result.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, a method for dynamically modeling a three-dimensional scene in a radio frequency simulation darkroom comprises the following steps:
establishing three-dimensional models of an array subsystem, a turntable subsystem, a shielding subsystem, a main control subsystem and a signal source subsystem by adopting a self-building model library and/or a dynamic self-building model, and loading the three-dimensional models into a scene;
planning the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
planning the size of the radio frequency simulation darkroom in the width direction according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
planning the size of the radio frequency simulation darkroom in the height direction according to the incident angle of the array transmitting signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency transmitting point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
based on the length, width and height of the radio frequency simulation darkroom, calculating the position and size characteristics of the main reflecting area according to a Fresnel formula;
and generating a three-dimensional characteristic cloud picture of the main reflecting area according to the position and size characteristics of the main reflecting area.
Further, the dynamic self-building model specifically includes: and automatically calculating and synchronously generating a three-dimensional model according to the set key dimensions of the array subsystem, the turntable subsystem, the shielding subsystem, the main control subsystem or the signal source subsystem, and loading the three-dimensional model into a scene.
Further, the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna is calculated according to the following formula:
in the formula, D represents the aperture diameter of the radio frequency array antenna, D represents the aperture size of the tested antenna on the turntable, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, lambda represents the wavelength, and delta phimaxRepresenting a phase difference by a value of delta phimax＝π/8。
Further, the planning of the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna comprises:
respectively planning the size of a maintenance platform, the distance between an array and the maintenance platform and the size of a rotary table according to the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
and calculating the size of the radio frequency simulation darkroom in the length direction according to the size of the maintenance platform, the distance between the array and the maintenance platform and the size of the rotary table.
Further, the dimension of the radio frequency simulation darkroom in the width direction is obtained according to the following steps:
respectively calculating the distance between the radio frequency array and the left wall or the right wall of the radio frequency simulation darkroom according to the incident angle of the array emission signal reaching the left wall or the right wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
and calculating the size of the radio frequency simulation darkroom in the width direction according to the distance between the radio frequency array and the left side wall, the distance between the radio frequency array and the right side wall and the size of the array.
Further, the distance between the radio frequency array and the left side wall or the right side wall of the radio frequency simulation darkroom is calculated according to the following formula:
in the formula, alphalRepresents the incident angle, beta, of the array emission signal to the left wall or the right wall of the radio frequency simulation darkroomlThe azimuth angle of the array emission point is represented, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, and x represents the distance between the radio frequency array and the left side wall or the right side wall of the radio frequency simulation darkroom.
Further, the dimension of the radio frequency simulation darkroom in the height direction is obtained according to the following steps:
respectively calculating the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the pitching half angle of the radio frequency emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
and calculating the size of the radio frequency simulation darkroom in the width direction according to the distance between the radio frequency array and the roof of the radio frequency simulation darkroom, the distance between the radio frequency array and the ground of the radio frequency simulation darkroom and the size of the array.
Further, the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom is calculated according to the following formula:
in the formula, alphauRepresenting the angle of incidence, beta, of the array transmitted signal on the roof or floor of the radio frequency simulated darkroomuAnd the pitch half angle of the radio frequency emission point is represented, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, and x represents the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom.
The dynamic modeling method for the three-dimensional scene of the radio frequency simulation darkroom can complete the dynamic modeling process of the three-dimensional scene according to the requirement, improves the modeling speed, realizes the real-time automatic generation of the model, combines the performance calculation part with the real-time dynamic model and increases the confidence coefficient of the calculation result.
In another aspect, a system for dynamically modeling a three-dimensional scene in a radio frequency simulation darkroom comprises:
the three-dimensional visual scene modeling module is configured to adopt a self-building model library and/or a dynamic self-building model to build three-dimensional models of the array subsystem, the turntable subsystem, the shielding subsystem, the master control subsystem and the signal source subsystem and load the three-dimensional models into a scene;
the first area size planning module is configured to plan the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the second area size planning module is configured to plan the size of the radio frequency simulation darkroom in the width direction according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
the third area size planning module is configured to plan the size of the radio frequency emission simulation darkroom in the height direction according to the incident angle of the array emission signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency emission point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the calculation module is configured to calculate the position and size characteristics of the main reflection area according to a Fresnel formula based on the length, width and height of the radio frequency simulation darkroom;
and the three-dimensional characteristic cloud picture generation module is configured to generate a three-dimensional characteristic cloud picture of the main reflection area according to the position and size characteristics of the main reflection area.
Further, the system for dynamically modeling the three-dimensional scene in the radio frequency simulation darkroom further comprises: and the real-time simulation module is configured to perform real-time simulation and dynamic demonstration based on the established three-dimensional scene dynamic model of the radio frequency simulation darkroom.
Further, the system for dynamically modeling the three-dimensional scene in the radio frequency simulation darkroom further comprises: and the data management module is used for managing model data, performance data and test data of the radio frequency simulation darkroom.
The three-dimensional scene dynamic modeling system of the radio frequency simulation darkroom has the following beneficial technical effects:
a) systematization: the radio frequency simulation darkroom is organically combined from a construction stage to a use stage, and a complete system from design modeling to simulation analysis to data management is formed;
b) convenience and convenience: the dynamic modeling replaces the traditional three-dimensional software modeling, so that the use and the modification are more convenient, the design period is shortened, and the flexibility of scheme design is improved;
c) modularization: the system is designed by a modularized idea and has the characteristic of strong expansibility;
d) visualization: the three-dimensional model demonstration test process replaces the traditional data chart demonstration analysis, so that the demonstration and demonstration links are more visualized;
e) digitalizing: no matter the modeling process in the early stage or the testing process in the later stage, the method has complete data support, and completely realizes the digitization of the whole system.
Drawings
FIG. 1 is a flow chart of a method for dynamically modeling a three-dimensional scene in a radio frequency simulation darkroom according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the calculation principle of the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
FIG. 3 is a schematic diagram of the calculation of the dimension along the length direction of the radio frequency simulation darkroom;
FIG. 4 is a schematic diagram of the calculation of the dimension in the width direction of the radio frequency simulation darkroom;
fig. 5 is a schematic structural diagram of a three-dimensional scene dynamic modeling system of a radio frequency simulation darkroom according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As described above, the existing radio frequency simulation darkroom model design is mainly based on three-dimensional modeling software, has a long design period, and cannot automatically model and realize real-time dynamic generation according to requirements.
Therefore, the embodiment of the invention provides a three-dimensional scene dynamic modeling method for a radio frequency simulation darkroom, which comprises the following steps:
step 1, adopting a self-building model base and/or a dynamic self-building model to build three-dimensional models of an array subsystem, a turntable subsystem, a shielding subsystem, a master control subsystem and a signal source subsystem and loading the three-dimensional models into a scene;
the three-dimensional visual modeling of the radio frequency simulation darkroom array subsystem, the turntable subsystem, the shielding subsystem, the main control subsystem and the signal source subsystem is realized through two modes of a self-building model library and a dynamic self-modeling mode.
The self-modeling type library stores standard models (mainly a turntable model and other auxiliary equipment models) with different specifications and shapes, selects and loads the models according to the requirements of the radio frequency simulation darkroom, sets and renders multiple attributes such as color, material, grammar and the like of the loaded models, and has a full scene export function.
The dynamic self-building model is based on the set key dimensions of an array subsystem, a rotary table subsystem, a shielding subsystem, a main control subsystem and a signal source subsystem in the radio frequency simulation darkroom, automatically calculates and synchronously generates a three-dimensional model and loads the three-dimensional model into a scene.
Step 2, planning the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the method specifically comprises the following steps:
step 201, confirming the test distance of the pure spectrum space, that is, the distance from the rotation center of the tested antenna on the turntable to the target radiation antenna array surface, and the calculation principle is shown in fig. 2, wherein D represents the diameter of the aperture surface of the radio frequency array antenna, R represents the distance from the rotation center of the tested antenna on the turntable to the target radiation antenna array surface, and D represents the aperture size of the tested antenna on the turntable.
The minimum distance of R is calculated according to the following formula.
In the formula, λ represents the wavelength, Δ φmaxIndicating the phase difference.
Take Delta phimaxAnd (3) substituting the formula to calculate the minimum distance of the far field of the antenna.
Then, the minimum distance is used as an area planning basis to respectively plan the size of the array, the size of the maintenance platform and the size of the base of the rotary table
Step 202, respectively planning the size of a maintenance platform, the distance between an array and the maintenance platform and the size of a rotary table according to the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of a target radiation antenna;
as shown in fig. 3, a schematic diagram of the calculation of the dimension in the length direction of the radio frequency simulation darkroom is shown. In the figure, D1 represents the distance from the center of the turntable to the back wall of the dark room, D2 represents the distance from the array to the maintenance platform, and D3 represents the size of the maintenance platform.
And step 203, calculating the size of the radio frequency simulation darkroom in the length direction according to the size of the maintenance platform, the distance between the array and the maintenance platform and the size of the rotary table.
As shown in fig. 3, the distance D2 between the array and the maintenance platform, the size D3 of the maintenance platform, the minimum distance R from the rotation center of the tested antenna of the turntable to the target radiation antenna array surface, and the distance D1 from the center of the turntable to the back wall of the darkroom are added to obtain the size in the length direction of the radio frequency simulation darkroom, thereby completing the size planning in the length direction of the radio frequency simulation darkroom.
Step 3, planning the size of the emergent frequency simulation darkroom in the width direction according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
the method comprises the following steps:
step 301, respectively calculating the distance between the radio frequency array and the left wall or the right wall of the radio frequency simulation darkroom according to the incident angle of the array emission signal reaching the left wall or the right wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
as shown in fig. 4, a schematic diagram of the dimension calculation in the width direction of the radio frequency simulation darkroom is shown. In the figure, alpha represents the incident angle of an array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, beta represents the azimuth angle of an array emission point, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, and x represents the distance between the radio frequency array and the left side wall or the right side wall of the radio frequency simulation darkroom.
Calculating the distance between the radio frequency array and the left side wall or the right side wall of the radio frequency simulation darkroom according to the following formula:
and step 302, calculating the size of the radio frequency simulation darkroom in the width direction according to the distance between the radio frequency array and the left side wall and the right side wall and the size of the array.
And adding the distance between the radio frequency array and the left side wall, the distance between the radio frequency array and the right side wall and the size of the array to obtain the size of the radio frequency simulation darkroom in the width direction.
Step 4, planning the size of the emergent frequency simulation darkroom in the height direction according to the incident angle of the array emission signal reaching the roof or the ground of the RF simulation darkroom, the pitching half-angle of the RF emission point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
step 401, respectively calculating the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom according to the incident angle of the array emission signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency emission point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom is calculated in a similar step 301. Specifically, it is calculated according to the following formula:
in the formula, alpha represents the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, beta represents the pitching half-angle of the radio frequency emission point, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, and x represents the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom.
Step 402, calculating the size of the radio frequency simulation darkroom in the height direction according to the distance between the radio frequency array and the roof and the ground of the radio frequency simulation darkroom and the size of the array.
And adding the distance between the radio frequency array and the roof, the distance between the radio frequency array and the ground and the size of the array to obtain the size of the radio frequency simulation darkroom in the height direction.
Step 5, calculating the position and size characteristics of the main reflecting area according to a Fresnel formula based on the length, width and height of the radio frequency simulation darkroom;
and 6, generating a three-dimensional characteristic cloud picture of the main reflecting area according to the position and size characteristics of the main reflecting area.
In another embodiment, a system for dynamically modeling a three-dimensional scene in a radio frequency simulation darkroom, as shown in fig. 5, comprises: the three-dimensional visual scene planning system comprises a three-dimensional visual scene modeling module, a first region size planning module, a second region size planning module, a third region size planning module, a calculating module and a three-dimensional characteristic cloud picture generating module.
The three-dimensional visual scene modeling module is configured to adopt a self-building model library and/or a dynamic self-building model to build three-dimensional models of the array subsystem, the turntable subsystem, the shielding subsystem, the master control subsystem and the signal source subsystem and load the three-dimensional models into a scene;
the first area size planning module is configured to plan the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the second area size planning module is configured to plan the size of the radio frequency simulation darkroom in the width direction according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
the third area size planning module is configured to plan the size of the radio frequency emission simulation darkroom in the height direction according to the incident angle of the array emission signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency emission point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the calculation module is configured to calculate the position and size characteristics of the main reflection area according to a Fresnel formula based on the length, width and height of the radio frequency simulation darkroom;
and the three-dimensional characteristic cloud picture generation module is configured to generate a three-dimensional characteristic cloud picture of the main reflection area according to the position and size characteristics of the main reflection area.
As shown in fig. 5, the aforementioned three-dimensional scene dynamic modeling system for a radio frequency simulation darkroom further includes: and the real-time simulation module is configured to perform real-time simulation and dynamic demonstration based on the established three-dimensional scene dynamic model of the radio frequency simulation darkroom.
The real-time simulation module has two demonstration states of program-controlled demonstration, numerical simulation demonstration and the like.
The program-controlled demonstration is a fixed demonstration flow set according to the existing data model, and the program-controlled demonstration process completely depends on the existing data model and is mainly used for function demonstration.
The numerical simulation demonstration is carried out in a state that the data model is totally unknown, result data are obtained through real-time simulation calculation according to the randomly set change situation, the calculation result and the real result are compared and analyzed, and the result of the simulation demonstration is judged.
As shown in fig. 5, the aforementioned three-dimensional scene dynamic modeling system for a radio frequency simulation darkroom further includes: and the data management module is used for managing model data, performance data and test data of the radio frequency simulation darkroom and can realize analysis and calling of related data.
The three-dimensional scene dynamic modeling system of the radio frequency simulation darkroom can complete the dynamic modeling process of the three-dimensional scene according to the requirement, improves the modeling speed, realizes the real-time automatic generation of the model, combines the performance calculation part with the real-time dynamic model and increases the confidence coefficient of the calculation result. Besides the demonstration stage, the system is provided with a data management and analysis module and a dynamic demonstration module of the test process, and can also be used for data collection, storage and analysis in the test stage and serve the full life cycle of the radio frequency simulation darkroom. The system enables the whole radio frequency simulation darkroom to be systematized, the design process to be convenient and fast, the demonstration process to be visualized and the management process to be digital, and has extremely high application and popularization values.
The present invention has been disclosed in terms of the preferred embodiment, but is not intended to be limited to the embodiment, and all technical solutions obtained by substituting or converting equivalents thereof fall within the scope of the present invention.
Claims (10)
1. A three-dimensional scene dynamic modeling and real-time simulation system of a radio frequency simulation darkroom is characterized by comprising:
establishing three-dimensional models of an array subsystem, a turntable subsystem, a shielding subsystem, a main control subsystem and a signal source subsystem by adopting a self-building model library and/or a dynamic self-building model, and loading the three-dimensional models into a scene;
planning the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
planning the size of the radio frequency simulation darkroom in the width direction according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
planning the size of the radio frequency simulation darkroom in the height direction according to the incident angle of the array antenna transmitting signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency transmitting point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
based on the length, width and height of the radio frequency simulation darkroom, calculating the position and size characteristics of the main reflecting area according to a Fresnel formula;
and generating a three-dimensional characteristic cloud picture of the main reflecting area according to the position and size characteristics of the main reflecting area.
2. The method for dynamically modeling the three-dimensional scene of the radio frequency simulation darkroom according to claim 1, wherein the dynamic self-modeling model specifically comprises: and automatically calculating and synchronously generating a three-dimensional model according to the set key dimensions of the array subsystem, the turntable subsystem, the shielding subsystem, the main control subsystem or the signal source subsystem, and loading the three-dimensional model into a scene.
3. The method for dynamically modeling the three-dimensional scene in the radio frequency simulation darkroom according to claim 1, wherein the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna is calculated according to the following formula:
in the formula, D represents the aperture diameter of the radio frequency array antenna, D represents the aperture size of the tested antenna on the turntable, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, lambda represents the wavelength, and delta phimaxRepresenting a phase difference by a value of delta phimax＝π/8。
4. The method of claim 1, wherein the step of planning the dimension of the radio frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna comprises the steps of:
respectively planning the size of a maintenance platform, the distance between an array and the maintenance platform and the size of a rotary table according to the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
and calculating the size of the radio frequency simulation darkroom in the length direction according to the size of the maintenance platform, the distance between the array and the maintenance platform and the size of the rotary table.
5. The method for dynamically modeling the three-dimensional scene of the radio frequency simulation darkroom according to claim 1, wherein the dimension of the radio frequency simulation darkroom in the width direction is obtained according to the following steps:
respectively calculating the distance between the radio frequency array and the left wall or the right wall of the radio frequency simulation darkroom according to the incident angle of the array emission signal reaching the left wall or the right wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
and calculating the size of the radio frequency simulation darkroom in the width direction according to the distance between the radio frequency array and the left side wall, the distance between the radio frequency array and the right side wall and the size of the array.
6. The method for dynamically modeling the three-dimensional scene of the radio frequency simulation darkroom according to claim 5, wherein the distance between the radio frequency array and the left side wall or the right side wall of the radio frequency simulation darkroom is calculated according to the following formula:
in the formula, alphalRepresents the incident angle, beta, of the array emission signal to the left wall or the right wall of the radio frequency simulation darkroomlThe azimuth angle of the array emission point is represented, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, and x represents the distance between the radio frequency array and the left side wall or the right side wall of the radio frequency simulation darkroom.
7. The method for dynamically modeling the three-dimensional scene of the radio frequency simulation darkroom according to claim 1, wherein the dimension of the radio frequency simulation darkroom in the height direction is obtained according to the following steps:
respectively calculating the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom according to the incident angle of the array emission signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency emission point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
and calculating the size of the radio frequency simulation darkroom in the width direction according to the distance between the radio frequency array and the roof of the radio frequency simulation darkroom, the distance between the radio frequency array and the ground of the radio frequency simulation darkroom and the size of the array.
8. The method for dynamically modeling the three-dimensional scene of the radio frequency simulation darkroom of claim 7, wherein the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom is calculated according to the following formula:
in the formula, alphauRepresents the incident angle, beta, of the array emission signal to the left wall or the right wall of the radio frequency simulation darkroomuAnd the pitch half angle of the radio frequency emission point is represented, R represents the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna, and x represents the distance between the radio frequency array and the roof or the ground of the radio frequency simulation darkroom.
9. A three-dimensional scene dynamic modeling system of a radio frequency simulation darkroom is characterized by comprising:
the three-dimensional visual scene modeling module is configured to adopt a self-building model library and/or a dynamic self-building model to build three-dimensional models of the array subsystem, the turntable subsystem, the shielding subsystem, the master control subsystem and the signal source subsystem and load the three-dimensional models into a scene;
the first area size planning module is configured to plan the size of the emergent frequency simulation darkroom in the length direction according to the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the second area size planning module is configured to plan the size of the radio frequency simulation darkroom in the width direction according to the incident angle of the array emission signal reaching the left side wall or the right side wall of the radio frequency simulation darkroom, the azimuth angle of the array emission point and the minimum distance from the rotary center of the tested antenna of the rotary table to the array surface of the target radiation antenna;
the third area size planning module is configured to plan the size of the radio frequency emission simulation darkroom in the height direction according to the incident angle of the array emission signal reaching the roof or the ground of the radio frequency simulation darkroom, the pitching half-angle of the radio frequency emission point and the minimum distance from the rotation center of the tested antenna of the turntable to the array surface of the target radiation antenna;
the calculation module is configured to calculate the position and size characteristics of the main reflection area according to a Fresnel formula based on the length, width and height of the radio frequency simulation darkroom;
and the three-dimensional characteristic cloud picture generation module is configured to generate a three-dimensional characteristic cloud picture of the main reflection area according to the position and size characteristics of the main reflection area.
10. The system of claim 9, wherein the real-time simulation module is configured to perform real-time simulation and dynamic demonstration based on the established three-dimensional scene dynamic model of the radio frequency simulation darkroom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581136.2A CN114280956A (en) | 2021-12-22 | 2021-12-22 | Three-dimensional scene dynamic modeling method and system for radio frequency simulation darkroom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581136.2A CN114280956A (en) | 2021-12-22 | 2021-12-22 | Three-dimensional scene dynamic modeling method and system for radio frequency simulation darkroom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114280956A true CN114280956A (en) | 2022-04-05 |
Family
ID=80873807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111581136.2A Pending CN114280956A (en) | 2021-12-22 | 2021-12-22 | Three-dimensional scene dynamic modeling method and system for radio frequency simulation darkroom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114280956A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075754A1 (en) * | 2008-12-30 | 2010-07-08 | 刘建 | Radiation performance testing method and system |
| CN104569942A (en) * | 2014-12-18 | 2015-04-29 | 北京无线电计量测试研究所 | Monostation radar target characteristic measurement method for identifying positions of synchronous scattering points |
| CN104569941A (en) * | 2014-12-18 | 2015-04-29 | 北京无线电计量测试研究所 | Synchronous scattering point position identification method for double-station radar target property measurement |
| CN209979854U (en) * | 2018-10-31 | 2020-01-21 | 长沙北斗产业安全技术研究院有限公司 | Microwave darkroom |
| CN112685923A (en) * | 2021-03-17 | 2021-04-20 | 湖南卫导信息科技有限公司 | Method and device for full-flow simulation and performance optimization of starry darkroom and electronic equipment |
-
2021
- 2021-12-22 CN CN202111581136.2A patent/CN114280956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075754A1 (en) * | 2008-12-30 | 2010-07-08 | 刘建 | Radiation performance testing method and system |
| CN104569942A (en) * | 2014-12-18 | 2015-04-29 | 北京无线电计量测试研究所 | Monostation radar target characteristic measurement method for identifying positions of synchronous scattering points |
| CN104569941A (en) * | 2014-12-18 | 2015-04-29 | 北京无线电计量测试研究所 | Synchronous scattering point position identification method for double-station radar target property measurement |
| CN209979854U (en) * | 2018-10-31 | 2020-01-21 | 长沙北斗产业安全技术研究院有限公司 | Microwave darkroom |
| CN112685923A (en) * | 2021-03-17 | 2021-04-20 | 湖南卫导信息科技有限公司 | Method and device for full-flow simulation and performance optimization of starry darkroom and electronic equipment |
Non-Patent Citations (2)
| Title |
|---|
| 刘炜丽: "浅析天线罩测试用微波暗室的建设", 《2017年航空智能装备学术论文集》, 19 September 2017 (2017-09-19), pages 18 - 20 * |
| 袁丹: "射频制导仿真系统关键技术", 《火力与指挥控制》, vol. 40, no. 1, 15 January 2015 (2015-01-15), pages 108 - 111 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103991555B (en) | A kind of automatic measurement method for aircraft digital assembling | |
| CN107480356B (en) | Component design and inspection integrated method based on CATIA and laser tracker | |
| CN111023966A (en) | Tunnel measurement and control method based on combination of three-dimensional laser scanner and BIM | |
| CN112505643B (en) | Radar and infrared composite seeker open-loop semi-physical simulation method and system | |
| CN108052762B (en) | A kind of severe cold area building natural lighting performance simulation method based on local light climate | |
| CN111683388B (en) | Near-field radiation attenuation test method and three-dimensional display system | |
| CN110608683A (en) | Quality evaluation method for large-size building component combining laser scanner and BIM | |
| WO2021098808A1 (en) | Method and system for determining laser tracker station, electronic device, and medium | |
| CN107993281B (en) | Method for simulating optical characteristics of space target visible light | |
| CN108548833B (en) | Concrete void detection method and device and terminal equipment | |
| CN112513665A (en) | Method and device for determining a radar cross-sectional area, method for training an interaction model, radar target simulator and test stand | |
| CN111489431A (en) | Smart city planning simulation dynamic simulation system and operation method thereof | |
| CN108639374A (en) | A kind of aircraft components numeric terminal measured data processing method and system | |
| CN110471075A (en) | Radar range finding method, apparatus and terminal device | |
| CN112504118A (en) | Special-shaped steel structure measuring method based on lofting robot | |
| CN113538706A (en) | Digital sand table-based house scene display method, device, equipment and storage medium | |
| CN115600919A (en) | Method for real-time unorganized emission localization and campus emission total calculation | |
| US20070005325A1 (en) | Circuit simulation using precision-space concept | |
| CN114280956A (en) | Three-dimensional scene dynamic modeling method and system for radio frequency simulation darkroom | |
| CN110515060A (en) | The method of multi-line laser radar Planar mirror | |
| US10304351B2 (en) | Buried asset detection simulator using retrofitted electromagnetic locate device | |
| CN112906241B (en) | Mining area automatic driving simulation model construction method, mining area automatic driving simulation model construction device, mining area automatic driving simulation model construction medium and electronic equipment | |
| CN114882171A (en) | 3D scanning method based on BIM, storage medium and computer equipment | |
| CN114419113A (en) | Building construction progress identification method and device and electronic equipment | |
| CN101915581B (en) | Comet optical surface signal simulation method for deep space exploration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |