CN115001599B - Method for rapidly testing power difference of same-frequency signals - Google Patents
Method for rapidly testing power difference of same-frequency signals Download PDFInfo
- Publication number
- CN115001599B CN115001599B CN202210609774.9A CN202210609774A CN115001599B CN 115001599 B CN115001599 B CN 115001599B CN 202210609774 A CN202210609774 A CN 202210609774A CN 115001599 B CN115001599 B CN 115001599B
- Authority
- CN
- China
- Prior art keywords
- signal source
- signal
- transmitting
- transmitting power
- tested equipment
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- 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
- H04B17/102—Power radiated at antenna
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The application discloses a method for rapidly testing the power difference of common-frequency signals, which comprises signal sources A and B and tested equipment, wherein the included angle between the two signal sources is more than or equal to 30 degrees, and the distance D between the two signal sources and the tested equipment is more than or equal to 10 lambda; setting the signal source transmitting frequency to be the same as the center frequency of the tested equipment, and adjusting the signal source transmitting power; and simultaneously starting a signal source A and a signal source B, adjusting the transmitting power of the signal source A and the transmitting power of the signal source B so that the transmitting power of the signal source A is higher or lower than the transmitting power of the signal source B and the power difference exists between the signal source A and the signal source B, gradually adjusting until one of the direction deviation is larger than +/-3 degrees, recording absolute values of transmitting power difference values of the transmitting sources A and the transmitting power difference values of the transmitting sources B under two conditions, and calculating the average value of the absolute values of the two power difference values to obtain the power difference. The application can rapidly test the same-frequency signal power difference of equipment, and has simple erection mode and low evaluation cost.
Description
Technical Field
The application relates to the technical field of radio monitoring, in particular to a method for rapidly testing the power difference of common-frequency signals.
Background
The co-channel signal power difference can be used to evaluate the ability of the radio monitoring device to resolve co-channel multiple signals. The prior test standard suggests that a standard field intensity system is adopted to assist in evaluating the power difference index of the tested equipment, and the following two problems possibly occur in the mode:
1) The test cost is high. The standard field intensity system has very high requirements on the measurement precision of instrument equipment, the radio monitoring field is mostly used for testing by adopting a high-precision real-time spectrum analyzer, and the high-precision real-time spectrum analyzer has high price, so that the testing cost is high;
2) The test environment is complicated to build. When testing the power resolving power of the same-frequency signal, the standard field intensity system for the tested equipment in the existing test standardAnd the layout of the signal source has definite requirements, as shown in figure 1, the distance between the tested equipment and the signal source A is D A1 The field intensity value of the signal source A received by the tested equipment is P A1 The distance between the tested equipment and the signal source B is D B1 The field intensity value of the signal source B received by the tested equipment is P B1 The distance between the standard field intensity system and the signal source A is D A2 The standard field intensity system receives the field intensity value P of the signal source A A2 The distance between the standard field intensity system and the signal source B is D B2 The standard field intensity system receives the field intensity value P of the signal source B B2 The requirement of the existing test standard on the power difference test is D A1 ＝D A2 ＝D B1 ＝D B2 . In actual engineering, P cannot be ensured under the condition that the above conditions are satisfied A1 ＝P A2 ＝P B1 ＝P B2 Resulting in a deviation of the test results.
Disclosure of Invention
The application aims to provide a method for rapidly testing the same-frequency signal power difference, which is used for solving the problems that the equipment cost for testing the same-frequency signal power difference is higher and a standard field intensity system cannot meet a test standard, so that a test result is deviated in the prior art.
The application solves the problems by the following technical proposal:
a method for rapidly testing the power difference of common-frequency signals, comprising:
s1, setting tested equipment, a signal source A and a signal source B, wherein the included angle of the signal source A and the signal source B is more than or equal to a preset angle, and the distance D between the signal source A and the signal source B and the tested equipment is more than or equal to 10 lambda, wherein lambda is the wavelength of the lowest test frequency of the tested equipment;
step S2, setting the transmitting frequency of the signal source A to be equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source A to enable the strength of the signal received by the tested equipment to be satisfied: the signal intensity-sensitivity is larger than a preset value, and the signal source A is closed; setting the transmitting frequency of the signal source B equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source B to ensure that the signal intensity received by the tested equipment meets the following conditions: the signal intensity-sensitivity is larger than a preset value, and the signal source is turned offB, a step of preparing a composite material; simultaneously starting a signal source A and a signal source B, gradually adjusting the transmitting power of the signal source A and the transmitting power of the signal source B to ensure that the transmitting power of the signal source A is higher than the transmitting power of the signal source B and the power difference exists between the signal source A and the signal source B until the direction degree of one of the signal source A and the signal source B exceeds a set value when deviating from a single signal, and recording the absolute value |P of the transmitting power difference of the signal source A and the signal source B i |；
Step S3, setting the transmitting frequency of the signal source A to be equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source A to enable the strength of the signal received by the tested equipment to be satisfied: the signal intensity-sensitivity is larger than a preset value, and the signal source A is closed; setting the transmitting frequency of the signal source B equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source B to ensure that the signal intensity received by the tested equipment meets the following conditions: the signal intensity-sensitivity is larger than a preset value, and the signal source B is closed; simultaneously starting a signal source A and a signal source B, gradually adjusting the transmitting power of the signal source A and the transmitting power of the signal source B to ensure that the transmitting power of the signal source B is higher than the transmitting power of the signal source A and the signal source B have power difference until the direction degree of one of the signal source A and the signal source B exceeds a set value when deviating from a single signal, and recording the absolute value |P 'of the transmitting power difference of the signal source A and the signal source B' i Recording absolute value |P 'of the difference between the transmitting powers of the signal source A and the signal source B' i |；
Step S4, calculating the power difference of the center frequency fi of the tested equipment:
power difference= (|p) i |+|P’ i |)/2。
Preferably, the preset value is 20dB, the set value is ±3°, and the preset angle is 30 °.
The application can rapidly test the same-frequency signal power difference of the equipment, has simple erection mode, does not need a high-precision real-time spectrum analyzer, has low equipment cost, does not need a standard field intensity system, and only needs two signal sources, thereby having simple erection mode.
Compared with the prior art, the application has the following advantages:
(1) The application has lower requirement on the testing instrument, can realize the test of the power difference of the tested equipment by using 2 signal sources, and can greatly reduce the testing cost compared with the system which additionally needs 1 standard field intensity.
(2) The application has low requirements on the building layout of the test environment, only requires that the distance between the tested equipment and the signal source A is equal to the distance between the tested equipment and the signal source B, has simple building mode, shortens the building time of the test environment and realizes the rapid test of the power difference of the same-frequency signals.
Drawings
FIG. 1 is a diagram of a prior art frame for testing the power difference of common frequency signals;
FIG. 2 is a system block diagram of the present application;
FIG. 3 is a flow chart of the present application;
fig. 4 is a block diagram of a system in which a signal source a and a signal source B are implemented by the same signal source in the present application.
Detailed Description
The present application will be described in further detail with reference to examples, but embodiments of the present application are not limited thereto.
Example 1:
referring to fig. 2 and 3, a method for rapidly testing the power difference of the same-frequency signals includes:
s1, setting tested equipment, a signal source A and a signal source B, wherein the included angle between the signal source A and the signal source B is more than or equal to 30 degrees, and the distance D between the signal source A and the signal source B and the tested equipment is more than or equal to 10λ, wherein λ is the wavelength of the lowest test frequency of the tested equipment;
step S2, initial setting: setting the transmitting frequency of the signal source A equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source A to ensure that the signal intensity received by the tested equipment is higher than the sensitivity by 20dB, wherein the direction finding bandwidth is fB (fB is generally 10KHz or the latest value supported by the tested equipment and is larger than the parameter); closing a signal source A, setting the transmitting frequency of the signal source B to be equal to the frequency fi of the tested equipment, adjusting the transmitting power of the signal source B to ensure that the signal intensity received by the tested equipment is higher than the sensitivity by 20dB, and closing the signal source B;
step S3, simultaneously opening the letterThe signal source A and the signal source B are gradually adjusted to ensure that the transmitting power of the signal source A is higher than that of the signal source B and the power difference exists between the signal source A and the signal source B until the direction deviation of one of the signal source A and the signal source B is larger than +/-3 degrees, and the absolute value |P of the transmitting power difference of the signal source A and the signal source B is recorded i |；
After the step S3 is executed, returning to the step S2 for resetting, and executing the step S4;
step S4, simultaneously starting the signal source A and the signal source B, gradually adjusting the transmitting power of the signal source A and the transmitting power of the signal source B to ensure that the transmitting power of the signal source B is higher than the transmitting power of the signal source A and the transmitting power of the signal source B are different until the direction deviation of one of the signal source A and the signal source B is larger than +/-3 degrees, and recording the absolute value |P 'of the transmitting power difference value of the signal source A and the signal source B' i |；
Step S5, calculating the power difference of the center frequency fi of the tested device, wherein the power difference is = (|P) i |+|P’ i |)/2。
And step S2-step S4 are repeated, and the test of the power difference of the same-frequency signals of the tested equipment under different frequency points is realized by setting the center frequency fi of different signal sources.
Example 2:
in another preferred embodiment, on the basis of embodiment 1, with reference to fig. 4, the alternatives of signal source a and signal source B are as follows: after the same signal source distributes the transmitting power through the power divider, the signal is transmitted through the transmitting antenna A and the transmitting antenna B, the included angle between the transmitting antenna A and the transmitting antenna B is more than or equal to 30 degrees, the distance between the transmitting antenna A and the transmitting antenna B and the tested equipment is more than or equal to 10λ, λ is the wavelength of the lowest testing frequency of the tested equipment, the transmitting power of the transmitting antenna A and the transmitting antenna B is adjusted through the power divider by opening/closing the transmitting antenna A and the transmitting antenna B, the transmitting power of the transmitting antenna A is higher than the transmitting power of the transmitting antenna B, the transmitting antenna A and the transmitting antenna B have a power difference, the direction deviation of one of the transmitting antenna A and the transmitting antenna B is more than +/-3 degrees, and the absolute value of the transmitting power difference of the transmitting antenna A and the transmitting antenna B is recordedP value of j I (I); and realizing that the transmitting power of the transmitting antenna B is higher than that of the transmitting antenna A, and the transmitting antenna A and the transmitting antenna B have power difference, wherein the direction deviation of one of the transmitting antenna A and the transmitting antenna B is larger than +/-3 degrees, and recording the absolute value |P 'of the transmitting power difference of the transmitting antenna A and the transmitting antenna B' j And calculating the average value of the absolute values of the two power difference values to obtain the power difference, and realizing the rapid measurement of the power difference of the same-frequency signal.
Although the application has been described herein with reference to the above-described illustrative embodiments thereof, the foregoing embodiments are merely preferred embodiments of the present application, and it should be understood that the embodiments of the present application are not limited to the above-described embodiments, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure.
Claims (4)
1. A method for rapidly testing the power difference of common-frequency signals, comprising:
s1, setting tested equipment, a signal source A and a signal source B, wherein the included angle of the signal source A and the signal source B is more than or equal to a preset angle, and the distance D between the signal source A and the signal source B and the tested equipment is more than or equal to 10 lambda, wherein lambda is the wavelength of the lowest test frequency of the tested equipment;
step S2, setting the transmitting frequency of the signal source A to be equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source A to enable the strength of the signal received by the tested equipment to be satisfied: the signal intensity-sensitivity is larger than a preset value, and the signal source A is closed; setting the transmitting frequency of the signal source B equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source B to ensure that the signal intensity received by the tested equipment meets the following conditions: the signal intensity-sensitivity is larger than a preset value, and the signal source B is closed; simultaneously starting a signal source A and a signal source B, gradually adjusting the transmitting power of the signal source A and the transmitting power of the signal source B to ensure that the transmitting power of the signal source A is higher than the transmitting power of the signal source B and the power difference exists between the signal source A and the signal source B until the direction degree of one of the signal source A and the signal source B exceeds a set value when deviating from a single signal, and recording the transmitting power of the signal source A and the signal source BAbsolute value of the difference in power |P i |；
Step S3, setting the transmitting frequency of the signal source A to be equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source A to enable the strength of the signal received by the tested equipment to be satisfied: the signal intensity-sensitivity is larger than a preset value, and the signal source A is closed; setting the transmitting frequency of the signal source B equal to the center frequency fi of the tested equipment, and adjusting the transmitting power of the signal source B to ensure that the signal intensity received by the tested equipment meets the following conditions: the signal intensity-sensitivity is larger than a preset value, and the signal source B is closed; simultaneously starting a signal source A and a signal source B, gradually adjusting the transmitting power of the signal source A and the transmitting power of the signal source B to ensure that the transmitting power of the signal source B is higher than the transmitting power of the signal source A and the signal source B have power difference until the direction degree of one of the signal source A and the signal source B exceeds a set value when deviating from a single signal, and recording the absolute value |P 'of the transmitting power difference of the signal source A and the signal source B' i |；
Step S4, calculating the power difference of the center frequency fi of the tested equipment:
power difference= (|p) i |+|P’ i |)/2。
2. The method of claim 1, wherein the predetermined value is 20dB.
3. A method for rapidly testing a power difference of a common frequency signal according to claim 1, wherein the set value is ±3°.
4. A method for rapidly testing a power difference of a common frequency signal according to claim 1, wherein the predetermined angle is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210609774.9A CN115001599B (en) | 2022-05-31 | 2022-05-31 | Method for rapidly testing power difference of same-frequency signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210609774.9A CN115001599B (en) | 2022-05-31 | 2022-05-31 | Method for rapidly testing power difference of same-frequency signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115001599A CN115001599A (en) | 2022-09-02 |
| CN115001599B true CN115001599B (en) | 2023-11-21 |
Family
ID=83031573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210609774.9A Active CN115001599B (en) | 2022-05-31 | 2022-05-31 | Method for rapidly testing power difference of same-frequency signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115001599B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459591A (en) * | 2014-10-29 | 2015-03-25 | 北京遥感设备研究所 | Automatic testing device of direct detection type radiometer |
| CN106788797A (en) * | 2017-02-21 | 2017-05-31 | 成都易慧通科技有限公司 | A kind of high-precision radio frequency signal source power quick calibration method |
| US10237765B1 (en) * | 2018-09-07 | 2019-03-19 | Anritsu Company | Passive intermodulation (PIM) measuring instrument and method of measuring PIM |
| KR101965847B1 (en) * | 2018-10-25 | 2019-04-05 | 엘아이지넥스원 주식회사 | System and Method for Finding Direction of Signal in Hand Held Device |
| CN110418364A (en) * | 2019-08-30 | 2019-11-05 | 京信通信技术(广州)有限公司 | OTA test macro and calibration, test method and device |
| CN112363000A (en) * | 2020-11-18 | 2021-02-12 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Automatic testing device and method for airborne electronic countermeasure equipment |
| CN112904091A (en) * | 2021-01-13 | 2021-06-04 | 成都四威功率电子科技有限公司 | PID-based field intensity radiation automatic test system control method |
| CN114401056A (en) * | 2021-12-29 | 2022-04-26 | 中电科思仪科技(安徽)有限公司 | 5G communication vector signal generator complete machine calibration system and method |
-
2022
- 2022-05-31 CN CN202210609774.9A patent/CN115001599B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459591A (en) * | 2014-10-29 | 2015-03-25 | 北京遥感设备研究所 | Automatic testing device of direct detection type radiometer |
| CN106788797A (en) * | 2017-02-21 | 2017-05-31 | 成都易慧通科技有限公司 | A kind of high-precision radio frequency signal source power quick calibration method |
| US10237765B1 (en) * | 2018-09-07 | 2019-03-19 | Anritsu Company | Passive intermodulation (PIM) measuring instrument and method of measuring PIM |
| KR101965847B1 (en) * | 2018-10-25 | 2019-04-05 | 엘아이지넥스원 주식회사 | System and Method for Finding Direction of Signal in Hand Held Device |
| CN110418364A (en) * | 2019-08-30 | 2019-11-05 | 京信通信技术(广州)有限公司 | OTA test macro and calibration, test method and device |
| CN112363000A (en) * | 2020-11-18 | 2021-02-12 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Automatic testing device and method for airborne electronic countermeasure equipment |
| CN112904091A (en) * | 2021-01-13 | 2021-06-04 | 成都四威功率电子科技有限公司 | PID-based field intensity radiation automatic test system control method |
| CN114401056A (en) * | 2021-12-29 | 2022-04-26 | 中电科思仪科技(安徽)有限公司 | 5G communication vector signal generator complete machine calibration system and method |
Non-Patent Citations (2)
| Title |
|---|
| 短波空间谱测向技术同频信号分离测试方法研究;胡荣飞;林自豪;;中国无线电(第07期);全文 * |
| 采用频谱分析仪测量信号源功率电平及校准不确定度;韩桂芬;;现代电信科技(第05期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115001599A (en) | 2022-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10042029B2 (en) | Calibration of test instrument over extended operating range | |
| JP4348375B2 (en) | System for determining total isotropic sensitivity (TIS) and related methods | |
| US11923895B2 (en) | Optical transmitter tuning using machine learning and reference parameters | |
| CN104237829A (en) | Overall calibration method for high-accuracy noise factor measuring system | |
| CN104601258A (en) | Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car | |
| KR20160040539A (en) | Method for measuring sensitivity of data packet signal transceiver | |
| CN113791433B (en) | Satellite telemetry bit error rate test system and test method | |
| CN103701481B (en) | A kind of incoming level calibration steps of digital microwave transceiver | |
| Dudley et al. | Traceability via the Internet for microwave measurements using vector network analyzers | |
| CN115001599B (en) | Method for rapidly testing power difference of same-frequency signals | |
| US10534027B2 (en) | Phase coherent main and remote units of a network analyzer | |
| CN114826442A (en) | Phase calibration method, related device and equipment | |
| CN107483128A (en) | RRU and its online ACLR self diagnosis a kind of method | |
| CN108055091A (en) | A kind of millimeter wave self calibration virtual instrument and its implementation | |
| KR101905434B1 (en) | Apparatus for measuring passive intermodulation distortion signal and method for using the same | |
| CN106771712B (en) | A kind of frequency converter phase conformance testing device and method | |
| CN111682907A (en) | Satellite antenna isolation high-precision test system | |
| US9325459B2 (en) | Radio frequency communication | |
| US10771168B1 (en) | Radio frequency signal generating apparatus and radio frequency signal generating method | |
| Kaslis et al. | On the Use of Probe Signal Derivatives in Spherical Near-Field Antenna Measurements | |
| CN112730983B (en) | Test method for leaky coaxial cable | |
| Shen et al. | Noise figure measurement of narrow-band low noise system | |
| CN115374627A (en) | PCHIP (physical host interface protocol) based electromagnetic environment simulation correction method | |
| Nurgun | Comparison of the efficiency of two methods on RF/MW power amplifier gain compression test | |
| Zappelli | Analysis of``False Non Reciprocity''in 2-Port VNA Measurements of Reciprocal Devices |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |