CN112422170B - Near-field automatic detection method for dual-band radio frequency equipment - Google Patents
Near-field automatic detection method for dual-band radio frequency equipment Download PDFInfo
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- CN112422170B CN112422170B CN202011237383.6A CN202011237383A CN112422170B CN 112422170 B CN112422170 B CN 112422170B CN 202011237383 A CN202011237383 A CN 202011237383A CN 112422170 B CN112422170 B CN 112422170B
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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
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
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- H04B17/00—Monitoring; Testing
Abstract
The invention relates to the technical field of operation and maintenance of satellite communication equipment, and particularly discloses a near-field automatic detection method for dual-band radio frequency equipment. The invention can effectively detect the health working state of the servo system, reduce the detection time, accurately and truly simulate the running state of the satellite transponder and reduce the time of the ground-air satellite communication joint debugging.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of satellite communication equipment, in particular to a near field automatic detection method for dual-band radio frequency equipment.
Background
The ground simulation satellite transponder is used for replacing the satellite transponder to perform low-noise amplification, filtering and frequency mixing on an uplink signal sent by the ground integrated workstation to generate a downlink signal and send the downlink signal to a ground user, and the space loss of the simulation uplink and downlink links is matched with other instruments to perform system joint debugging test, so that the interference on the normal communication service of the satellite is avoided.
With the increasing demand for satellite communication capability, the demand for automatic detection of terrestrial analog satellite transponders has also increased. The ground simulation satellite transponder near field test and the far field test have essential difference on performance estimation of a satellite communication ground-air transmission system, and the near field test is required to avoid the problems of complex point selection of test points, limitation of sampling planes and the like so as to effectively improve the test result. Meanwhile, in the near field test, after short waves are reflected by the primary reflecting surface, the secondary reflecting surface and other reflecting surfaces under the near field condition, the field condition of a near field space becomes disordered, and the test difficulty is improved.
As shown in fig. 1, which is a schematic diagram of a conventional antenna servo system near-field automatic detection method in the prior art, a ground workstation sends attitude control information to a work antenna, and the work antenna feeds back control information to the ground workstation.
Disclosure of Invention
The invention aims to provide a near-field automatic detection method for a dual-band radio frequency device, which aims to solve the problems of single data comparison, low detection reliability and the like of the near-field automatic detection method for an antenna servo system in the prior art.
In order to solve the technical problem, the invention provides a near-field automatic detection method for a dual-band radio frequency device, which comprises the following steps:
s1, arranging a full-band horn antenna at the rear side of a working antenna and fixing, wherein the horn mouth of the full-band horn antenna faces right above all the time;
s2, the full-band horn antenna is matched with a ground simulation satellite transponder to send and receive short waves of corresponding frequency bands, and short wave data detection of full-band full postures of the working antenna is carried out through the full-band horn antenna;
s3, simultaneously comparing the detection data with a tested full-band antenna operation attitude database and the operation parameter data of the operation antenna of the ground comprehensive workstation;
and S4, judging whether the three-party comparison data is stably kept within a working standard threshold through level data obtained by testing the ground simulation satellite transponder in a single carrier working state and a forwarding working state, thereby completing automatic detection of a servo system in a satellite communication link under a near-field condition.
Preferably, in step S1, the full-band horn antenna covers Ka and Ku frequency bands, and the working antenna is a cassegrain antenna.
Preferably, in the step S2, the ground analog satellite repeater has three working states, namely, a beacon mode, a repeating mode and a standby mode, the ground analog repeater provides a single carrier with a Ku band of 12.25 GHz-12.75 GHz and a Ka band of 19.6 GHz-21.2 GHz in the beacon mode, and the ground analog repeater provides a Ku band repeating input frequency of 13.75 GHz-14.00 GHz and a Ka band repeating input frequency of 29.4 GHz-31.0 GHz in the repeating mode.
Preferably, in step S3, the entry method of the full-band antenna operation attitude database is as follows: the ground simulation satellite transponder and the full-band horn antenna are firstly arranged at the working positions of the cassegrain antenna, the ground workstation sends an instruction to gradually assign the cassegrain antenna to the corresponding attitude setting points through the servo system, the ground simulation satellite transponder respectively carries out a single carrier working state and a forwarding working state at each attitude setting point, the level data and the antenna attitude data of each attitude setting point are recorded together, and the setting point data is recorded into a full-band antenna operation attitude database.
Preferably, the level data includes frequency, signal strength, and signal attenuation, and the antenna attitude data includes an antenna azimuth angle, an antenna elevation angle, a polarization deck angle, and a cross deck angle.
Preferably, in step S4, a test procedure of the terrestrial analog repeater in the single carrier operating state is as follows: the ground workstation sets working parameters of a working antenna, adjusts the working antenna to a certain attitude setting point, then the ground workstation sends a Ka/Ku frequency band single carrier transmission information setting command to a ground simulation satellite transponder through an Ethernet, the ground simulation satellite transponder generates a Ka/Ku frequency band single carrier according to the specified command and records transmission information after receiving the command, the single carrier is received by the working antenna after the single carrier is sent out through a Ka/Ku full-frequency band horn antenna, the single carrier is transmitted back to the ground workstation through the Ethernet after the working antenna receives the single carrier information, meanwhile, the ground simulation satellite transponder transmits the transmission information back to the ground workstation, the ground workstation compares the received level data with full-frequency band antenna operation attitude database to perform standard threshold data comparison, a fixed attitude setting point near-field automatic test process of the servo system facing the ground simulation satellite transponder is completed, the attitude setting point is changed and repeated, level change and detection of the parameter change of the working antenna servo system and the change of the servo system meet the change range in the full-frequency band antenna operation attitude database, and the servo system faces the ground simulation satellite near-field automatic threshold test of the ground simulation satellite transponder.
Preferably, in step S4, a test procedure of the ground-based simulation transponder in the forwarding operating state is as follows: the ground workstation sets working parameters of a working antenna first, adjusts the working antenna to a certain attitude setting point, the ground workstation sends a Ka/Ku frequency band single carrier information setting command to the working antenna, the working antenna sends a Ka/Ku frequency band single carrier after receiving the command, a ground simulation satellite transponder receives the Ka/Ku frequency band single carrier through a Ka/Ku full-frequency band horn antenna, the ground workstation sends a Ka/Ku frequency band single carrier forwarding command to the ground simulation satellite transponder, the ground simulation satellite transponder receives the command, then forwards the received Ka/Ku frequency band single carrier information and records forwarding level data, the forwarded Ka/Ku frequency band single carrier information is sent out through the Ka/Ku full-frequency band horn antenna, the working antenna sends the received forwarded level data back to the ground workstation after the sent out forwarded Ka/Ku frequency band information is received by the working antenna, the ground simulation satellite transponder returns the forwarding information back to the ground workstation, the ground workstation returns the received level data to the ground workstation after the ground workstation receives the transmitted Ka/Ku frequency band single carrier information which is received by the working antenna, the ground workstation and the attitude data in-field simulation satellite transponder automatically compares the attitude with the attitude data of the attitude setting point, the attitude of the ground satellite antenna, the attitude setting servo system, the attitude change of the attitude setting servo data, and the attitude of the ground simulation satellite antenna, the attitude of the attitude setting servo system.
Compared with a far-field test method of a ground simulation satellite transponder, the method for automatically detecting the near-field of the dual-band radio frequency equipment avoids the problems that point selection of far-field test points is difficult and the like, improves the flexibility of satellite joint modulation test without considering the problem of selecting a plane, and compared with other near-field test methods of the ground simulation satellite transponder, the method for automatically detecting the near-field of the satellite communication equipment is realized in a standard threshold by detecting and comparing short-wave data of a full-band full attitude of a working antenna through a fixed full-band horn antenna under the condition that a Cassegrain antenna has a near-field electromagnetic wave environment with multiple reflecting surfaces and complex and variable complex fields, so that the healthy working state of a servo system is more effectively detected, the detection time of the servo system is reduced, the running state of the satellite transponder is more accurately and truly simulated, the ground-air satellite communication joint modulation time is reduced, and effective guarantee is increased for the running maintenance of the satellite communication equipment.
Drawings
FIG. 1 is a schematic diagram of a conventional antenna servo system near-field automatic detection method in the prior art;
fig. 2 is a schematic diagram of a near-field automatic detection method for a dual-band rf device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an operating state of an automatic test of an operating antenna according to an embodiment of the present invention;
FIG. 4 is a flow chart of an automatic test of a single carrier operating state of a satellite transponder facing the ground simulation by a servo system in the embodiment of the present invention;
FIG. 5 is a flowchart illustrating an automated testing of the forwarding operation status of the satellite transponder facing the ground in the servo system according to an embodiment of the present invention;
FIG. 6 is a comparison chart of data detection of antenna azimuth angles in an embodiment of the present invention;
FIG. 7 is a comparison diagram of data detection of the pitch angle of the antenna in the embodiment of the present invention;
FIG. 8 is a comparative graph of data detection of polarized deck angles in an embodiment of the present invention;
FIG. 9 is a comparison graph of data detection of intersecting deck corners in an embodiment of the invention.
Detailed Description
Embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 2, the method for automatically detecting a near field of a dual-band rf device in this embodiment includes the following steps:
s1, arranging a full-band horn antenna at the rear side of a working antenna and fixing, wherein the horn mouth of the full-band horn antenna always faces to the right upper side, as shown in a figure 3; the full-band horn antenna covers the Ka frequency band and the Ku frequency band, and the working antenna is a Cassegrain antenna.
S2, the full-band horn antenna is matched with a ground simulation satellite transponder to send and receive short waves of corresponding frequency bands, and in a near-field electromagnetic wave environment with a multiple reflecting surface and a complex and changeable complex field, the full-band horn antenna is used for detecting the short wave data of the full-band full attitude of the working antenna; the ground simulation satellite transponder is provided with three working states of a beacon mode, a forwarding mode and a standby mode, the ground simulation transponder provides a single carrier with Ku wave band ranges from 12.25GHz to 12.75GHz and Ka wave band ranges from 19.6GHz to 21.2GHz in the beacon mode, and the ground simulation transponder provides Ku frequency band forwarding input frequency ranges from 13.75GHz to 14.00GHz and Ka frequency band forwarding input frequency ranges from 29.4GHz to 31.0GHz in the forwarding mode.
S3, simultaneously comparing the detection data with the tested full-band antenna operation attitude database and the operation parameter data of the operation antenna of the ground comprehensive workstation;
the recording method of the full-band antenna operation attitude database comprises the following steps: the ground simulation satellite transponder and the full-band horn antenna are firstly arranged at the working positions of the Cassegrain antenna, the ground workstation sends out an instruction to gradually assign corresponding attitude setting points to the Cassegrain antenna through a servo system, the ground simulation satellite transponder respectively carries out a single carrier working state and a forwarding working state at each attitude setting point, level data and antenna attitude data of each attitude setting point are recorded together, the setting point data are recorded into a full-band antenna working attitude database, the level data comprise frequency, signal intensity, signal attenuation and the like, and the antenna attitude data comprise an antenna direction angle, an antenna pitch angle, a polarized deck angle, a crossed deck angle and the like.
S4, level data obtained by testing the ground simulation satellite transponder in a single carrier working state and a forwarding working state is used for judging whether three-party comparison data are stably kept within a working standard threshold or not, and after the three-party comparison data are changed from one posture to another posture, the level data change accords with database change data, the detection method system judges that the posture change is correct, so that the automatic detection of a servo system in a satellite communication link is completed under the near field condition;
level data information such as frequency, signal intensity, signal attenuation and the like is obtained by testing the ground simulation satellite transponder in a single carrier working state and a forwarding working state, so that data support is made for the change of an antenna servo system, and the parameter change angle of the servo system is judged;
as shown in fig. 4, the test flow of the terrestrial analog repeater in the single carrier operating state is as follows: the ground workstation sets working parameters of a working antenna, adjusts the working antenna to a certain attitude setting point, then the ground workstation sends a Ka/Ku frequency band single carrier transmission information setting command to a ground simulation satellite transponder through an Ethernet, the ground simulation satellite transponder generates a Ka/Ku frequency band single carrier according to the specified command and records transmission information after receiving the command, the single carrier is received by the working antenna after the single carrier is sent out through a Ka/Ku full-frequency band horn antenna, the single carrier is returned to the ground workstation through the Ethernet after the working antenna receives the single carrier information, meanwhile, the ground simulation satellite transponder returns the transmission information to the ground workstation, the ground workstation compares the received level data with standard threshold data in an antenna operation attitude database, a fixed attitude setting point near-field automatic test process of the ground simulation satellite transponder facing the servo system is completed, the attitude setting point is changed and repeated, the level change and the detection result that the working antenna servo system parameters change accord with the change range in the standard of the full-frequency band antenna operation attitude database, and the full-range ground simulation satellite transponder is completed in the face of the ground simulation satellite transponder.
As shown in fig. 5, the testing procedure of the ground-based analog repeater in the repeating operating state is as follows: the ground workstation sets working parameters of the working antenna, adjusts the working antenna to a certain attitude setting point, sends a Ka/Ku frequency band single carrier information setting command to the working antenna, sends a Ka/Ku frequency band single carrier after receiving the command, the ground simulation satellite transponder receives the Ka/Ku frequency band single carrier through the Ka/Ku full-frequency-band horn antenna, then sends a Ka/Ku frequency band single carrier forwarding command to the ground simulation satellite transponder, the ground simulation satellite transponder receives the command, then forwards the Ka/Ku frequency band information and records forwarding level data, the forwarded Ka/Ku frequency band information is sent out through the Ka/Ku full-frequency-band horn antenna, the sent Ka/Ku frequency band information after forwarding is received by the working antenna, the work antenna returns received forwarded single-carrier level data to the ground workstation, meanwhile, the ground simulation satellite transponder returns forwarding information to the ground workstation, the ground workstation compares the received level information with standard threshold data of a full-band antenna operation attitude database, a fixed attitude setting point near field automatic test process of the servo system facing the ground simulation satellite transponder is completed, the attitude setting point is changed to repeat the operation, the level change and the detection work antenna servo system parameter change meet the change range within the standard threshold of the full-band antenna operation attitude database, and the servo system is determined to finish the ground simulation satellite transponder near field automatic test.
As shown in fig. 6 to 9, the antenna attitude data (antenna direction angle, antenna pitch angle, polarized deck angle, and crossed deck angle) at each attitude setting point is compared with the level data to determine whether the servo system is within the antenna attitude change criterion threshold, and thus to determine the health condition of the antenna servo system.
The near-field automatic detection method for the dual-band radio frequency equipment in the embodiment takes a Ka/Ku dual-band Cassegrain antenna as an example, and carries out near-field automatic test on a servo system in satellite communication.
Compared with a far-field test method of a ground simulation satellite transponder, the near-field automatic detection method of the dual-band radio frequency equipment avoids the problems of difficult point selection of far-field test points and the like, improves the flexibility of satellite joint debugging test without considering the problem of plane selection, and compared with other near-field test methods of the ground simulation satellite transponder, the near-field automatic detection method of the novel satellite communication equipment is realized in a standard threshold by detecting and comparing short-wave data of the full-band full attitude of a working antenna through a fixed full-band horn antenna under the condition that a Cassegrain antenna has a near-field electromagnetic wave environment with multiple reflecting surfaces and complex and changeable complex fields, so that the healthy working state of a servo system is detected more effectively, the detection time of the servo system is reduced, the running state of the satellite transponder is simulated more accurately and really, the ground-air satellite communication joint debugging time is reduced, and effective guarantee is increased for the running maintenance of the satellite communication equipment.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. A near-field automatic detection method for a dual-band radio frequency device is characterized by comprising the following steps:
s1, arranging a full-band horn antenna at the rear side of a working antenna for fixing, wherein the horn mouth of the full-band horn antenna always faces to the right upper side, and the full-band horn antenna covers a Ka frequency band and a Ku frequency band;
s2, the full-band horn antenna is matched with a ground simulation satellite transponder to transmit and receive short waves of corresponding frequency bands, the full-band horn antenna is used for detecting short wave data of full-band full postures of the working antenna, the ground simulation satellite transponder is provided with three working states of a beacon mode, a forwarding mode and a standby mode, the ground simulation transponder provides single carriers of Ku wave bands of 12.25 GHz-12.75 GHz and Ka wave bands of 19.6 GHz-21.2 GHz in the beacon mode, and the ground simulation transponder provides Ku frequency band forwarding input frequencies of 13.75 GHz-14.00 GHz and Ka frequency band forwarding input frequencies of 29.4 GHz-31.0 GHz in the forwarding mode;
s3, simultaneously comparing the detection data with a tested full-band antenna operation attitude database and the operation parameter data of the operation antenna of the ground comprehensive workstation;
and S4, judging whether the three-party comparison data is stably kept within a working standard threshold through level data obtained by testing the ground simulation satellite transponder in a single carrier working state and a forwarding working state, thereby completing automatic detection of a servo system in a satellite communication link under a near-field condition.
2. The method for near-field automatic detection of a dual-band rf device according to claim 1, wherein in step S1, the working antenna is a cassegrain antenna.
3. The near-field automatic detection method for the dual-band radio frequency device according to claim 1, wherein in step S3, the entry method for the full-band antenna operation attitude database is as follows: the ground simulation satellite transponder and the full-band horn antenna are firstly arranged at the working positions of the cassegrain antenna, the ground workstation sends out an instruction to gradually assign the cassegrain antenna to the corresponding attitude setting points through the servo system, the ground simulation satellite transponder respectively carries out a single carrier working state and a forwarding working state at each attitude setting point, the level data and the antenna attitude data of each attitude setting point are recorded together, and the setting point data are recorded into a full-band antenna operation attitude database.
4. The method of claim 3, wherein the level data comprises frequency, signal strength and signal attenuation, and the antenna attitude data comprises antenna azimuth angle, antenna elevation angle, polarized deck angle and cross deck angle.
5. The near field automatic detection method for the dual-band radio frequency device according to claim 4, wherein in step S4, the test procedure of the terrestrial analog repeater in the single carrier operating state is as follows: a1, a ground workstation sets working parameters of a working antenna first, the working antenna is adjusted to a certain attitude setting point, A2, the ground workstation sends a command for setting Ka/Ku frequency band single carrier transmission information to a ground simulation satellite transponder through an Ethernet, A3, the ground simulation satellite transponder generates the Ka/Ku frequency band single carrier according to a specified command and records the transmission information after receiving the command, the single carrier is received by the working antenna after the single carrier is sent out through a Ka/Ku full-frequency band horn antenna, A4, the working antenna returns the single carrier information to the ground workstation through the Ethernet after receiving the single carrier information, meanwhile, the ground simulation satellite transponder also transmits the transmission information to the ground workstation, A5, the ground workstation compares the received level data with a full-frequency band antenna operation attitude database for standard threshold data, a fixed attitude setting point automatic test flow of a servo system facing the ground simulation satellite transponder is completed, the attitude setting point is changed, the operation of the A1-A5 is repeated, the level change and the detection result that the parameter change of the working antenna servo system meets the full-frequency band antenna operation attitude database, the change of the ground simulation satellite transponder in the ground simulation satellite near-field automatic test flow is completed, and the ground simulation satellite transponder is confirmed.
6. The near-field automatic detection method for the dual-band radio frequency device according to claim 4, wherein in step S4, the test procedure of the terrestrial analog repeater in the repeating operation state is as follows: b1: the ground workstation sets up work antenna working parameter earlier, adjusts work antenna to certain gesture set point, B2: the ground satellite simulation transponder transmits a Ka/Ku frequency band single carrier information setting command to a working antenna, the working antenna transmits the Ka/Ku frequency band single carrier after receiving the command, B3, the ground satellite simulation transponder transmits a Ka/Ku frequency band single carrier forwarding command to the ground satellite simulation transponder after receiving the Ka/Ku frequency band single carrier through the Ka/Ku full-frequency band horn antenna, B4, the ground satellite simulation transponder performs forwarding processing on the received Ka/Ku frequency band single carrier information and records forwarding level data after receiving the command, the forwarded Ka/Ku frequency band single carrier information is transmitted through the Ka/Ku full-frequency band antenna, the working antenna transmits the received forwarded single carrier level data back to the ground working station after receiving the transmitted Ka/Ku frequency band single carrier information by the working antenna, B5, the ground satellite simulation transponder also transmits the forwarding information back to the ground working station, the ground working station performs standard data transmission on the received single carrier level data to the ground working antenna, the ground satellite simulation transponder performs a standard attitude data surface to perform a standard attitude change, the ground satellite simulation working station automatically performs a standard attitude change, and a servo attitude change in a servo system attitude detection process, and a servo attitude change process of the ground satellite simulation satellite system.
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| CN115037349B (en) * | 2022-05-11 | 2024-02-20 | 中国人民解放军陆军装甲兵学院 | Wireless dual-band satellite communication analog repeater |
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| US20130309961A1 (en) * | 2009-01-27 | 2013-11-21 | Wah Lim | Method and system for maintaining communication with inclined orbit geostationary satellites |
| CN109286449B (en) * | 2018-10-08 | 2024-03-08 | 中兵通信科技股份有限公司 | Equipment tester for error code test and simulation of satellite transponder |
| CN109547126A (en) * | 2018-11-08 | 2019-03-29 | 深圳市嵘兴实业发展有限公司 | Satellite communication broader frequency spectrum signal automatic monitoring method and its system |
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