CN103001709B - Antenna delay test method - Google Patents
Antenna delay test method Download PDFInfo
- Publication number
- CN103001709B CN103001709B CN201210378474.0A CN201210378474A CN103001709B CN 103001709 B CN103001709 B CN 103001709B CN 201210378474 A CN201210378474 A CN 201210378474A CN 103001709 B CN103001709 B CN 103001709B
- Authority
- CN
- China
- Prior art keywords
- antenna
- time delay
- standard time
- standard
- delay
- 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
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses an antenna delay test method. The antenna delay test method includes: three standard delay antennas of the same form, which are on the same frequency as an antenna to be tested and as polarized as the antenna to tested, are added in a microwave unaffected chamber meeting antenna far-field conditions; two of the standard delay antennas form a transceiving link which meets the antenna far-field conditions; combined delay of the transceiving link is measured with a vector network analyzer; according to three groups of measured combined delay values, the delay value of any standard delay antenna is obtained through simultaneous equations; the standard delay antenna with the delay known and the antenna to be tested form a transceiving link which meets the antenna far-field conditions; combined delay of the transceiving link is measured with the vector network analyzer; and the delay time of the tested antenna is solved by using the delay of the standard delay antenna as a known quantity. The antenna delay test method is simple, high in test precision and widely applicable.
Description
Technical field
The present invention relates to a kind of antenna delay test method, particularly a kind of antenna delay test method utilizing vector network analyzer and three standard time delay antennas.
Background technology
Along with the development of the aerospace flight technologies such as communication satellite, navigation satellite, satellite-borne SAR, require more and more higher to the tracking of antenna, setting accuracy.Compared with the past, satellite proposes to antenna and subsystem thereof the requirement that function is more complicated, performance is very harsh, depend merely on amplitude wave beam can not meet the demands to search for location, for navigation satellite: its every business service provided is all carry out distance resolve by measuring the time delay transmitted between carrier signal star ground.Therefore, the delay testing order of accuarcy of antenna is directly connected to the range accuracy of navigation system, finally has influence on the positioning precision of system, rate accuracy and time service precision.This power of test to antenna delay, measuring accuracy and test repeatability (such as before and after environmental test) propose the requirement of higher standard.If the not high meeting of the inadequate specification of method of testing, precision brings stern challenge to final test result data interpretation.Therefore, in the urgent need to a kind of science, specification, high-precision antenna delay test method.
Current industry commonly uses the test that vector network analyzer carries out antenna parameter, and its general principle is as follows: there is the mathematical relationship determined between phase parameter and time delay: time delay corresponds to the slope of frequency place phase place, and this slope is by the factor
weighting and obtain the physical unit of time delay, second (s), namely
therefore, directly time delay T can be tried to achieve with this formula, as shown in Figure 1.But vector network analyzer measures S parameter based on discrete frequency axis, therefore must get numerical approximation by the method for differential
wherein Δ f is an important parameter-aperture (aperture) of test group delay.Selected aperture will affect the time lag curve obtained, and its value crosses conference loss details; Too small, the impact of the noise that measured value superposes can be shown especially.
Formation loop is needed owing to utilizing vector network analyzer test antenna time delay, therefore need introducing standard time delay antenna and tested antenna to form receiving-transmitting chain to test link to utilize vector network analyzer, but the time delay of standard time delay antenna how accurately to test be an insoluble problem always.
Summary of the invention
Technology of the present invention is dealt with problems and is: the deficiency overcoming existing method of testing, provides a kind of antenna delay test method, and method of testing of the present invention is simple, measuring accuracy is high, and applied widely.
Technical solution of the present invention is: a kind of antenna delay test method, and step is as follows:
(1) at microwave dark room environment, introduce three forms consistent and with the same frequency range of tested antenna, like-polarized standard time delay antenna A, B, C;
(2) standard time delay antenna A and standard time delay antenna B is formed receiving-transmitting chain, the distance R between standard time delay antenna A and standard time delay antenna B meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
1, obtain T
a+ T
b=T
1-T
aB... ... ... ... ... ... ... ... ... .... (1);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
afor the time delay of standard time delay antenna A, T
bfor the time delay of standard time delay antenna B, T
aBfor the time delay between standard time delay antenna A and standard time delay antenna B phase center;
(3) standard time delay antenna B and standard time delay antenna C is formed receiving-transmitting chain, the distance R between standard time delay antenna B and standard time delay antenna C meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
2, obtain T
b+ T
c=T
2-T
bC... ... ... ... ... ... ... ... .... (2);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
bfor the time delay of standard time delay antenna B, T
cfor the time delay of standard time delay antenna C, T
bCfor the time delay between standard time delay antenna B and standard time delay antenna C phase center;
(4) standard time delay antenna A and standard time delay antenna C is formed receiving-transmitting chain, the distance R between standard time delay antenna A and standard time delay antenna C meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
3, obtain T
a+ T
c=T
3-T
aC... ... ... ... ... ... ... ... ... ... ... ... (3);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
afor the time delay of standard time delay antenna A, T
cfor the time delay of standard time delay antenna C, T
aCfor the time delay between standard time delay antenna A and standard time delay antenna C phase center;
(5) utilize equation (1), time delay T that (2), (3) solve standard time delay antenna A
a:
T
A＝(T
1+T
2+T
3-T
AB-T
BC-T
AC)/2-T
2+T
BC...............(4)；
(6) standard time delay antenna A and tested antenna D is formed receiving-transmitting chain, the distance R between standard time delay antenna A and tested antenna D
1meet, R
1>=2D
1 2/ λ
1, the combination time delay value T of receiving-transmitting chain is measured with vector network analyzer
4, obtain the time delay T of tested antenna
d, T
d=T
4-T
aD-T
a... ... ... ... ... ... ... (5);
Wherein: D
1for the maximum caliber of tested antenna D, λ
1for the operation wavelength of tested antenna D, T
afor the time delay of standard time delay antenna A, T
dfor the time delay of tested antenna D, T
aDfor the time delay between standard time delay antenna A and tested antenna D phase center.
T
aB, T
bC, T
aCcalculate divided by the light velocity by the distance between any two standard antenna phase centers.
T
aDcalculated divided by the light velocity by the distance between standard time delay antenna A and tested antenna D phase center.
The principle that realizes of the present invention is: first meeting the microwave dark room environment of Antenna Far Field condition, introduces and the same frequency range of tested antenna, the standard time delay antenna that like-polarized three forms are consistent; Then wherein receiving-transmitting chain will be formed by any two standard time delay antennas, link meets Antenna Far Field condition, measures its combination time delay, utilize the combination time delay value that three groups are measured with vector network analyzer, Simultaneous Equations, obtains the time delay value of any one standard time delay antenna; Finally standard time delay antenna known for time delay and tested antenna are formed receiving-transmitting chain, link meets Antenna Far Field condition, measures its combination time delay with vector network analyzer, and recycling standard time delay antenna delay is known quantity, solves the time delay value of tested antenna.
The present invention compared with prior art beneficial effect is:
(1) the present invention adopts three standard time delay antennas to survey time delay method, owing to have employed the form that Simultaneous Equations solves in testing standard time delay antenna delay process, do not introduce the error that between standard time delay antenna, inconsistency is brought, therefore theory of testing preciseness and precision are all high than conventional method.
(2) the present invention utilizes vector network analyzer directly to measure combination time delay between tested antenna and standard time delay antenna, in tested antenna delay part, do not introduce the result of calculation of aplanatism time delay, therefore the present invention has more than the delay testing limited the use of in reflector antenna, so the scope of application is wider.
(3) method of testing that the present invention proposes has been successfully applied to the delay testing of China's multi-satellite antenna, and its validity obtains the checking of flying in-orbit, has applicability and application value widely.
Accompanying drawing explanation
Fig. 1 is the phase place and time lag curve figure that utilize vector network analyzer to test to obtain;
Fig. 2 is the receiving-transmitting chain figure that standard time delay antenna A and standard time delay antenna B form;
Fig. 3 is the receiving-transmitting chain figure that standard time delay antenna B and standard time delay antenna C form;
Fig. 4 is the receiving-transmitting chain figure that standard time delay antenna A and standard time delay antenna C form;
Fig. 5 is the receiving-transmitting chain figure that standard time delay antenna A and tested antenna D form.
Embodiment
Antenna a bit can be made to be a constant (sphere that namely equiphase surface of Antenna Far Field is is the centre of sphere with this) in antenna main lobe region relative to the phase pattern function of this point if existed, then this point is called the phase center of antenna.Antenna delay is defined as the time of electromagnetic wave needed for from antenna phase center to feed port transmission.
Time delay during test antenna, place need meet Antenna Far Field test condition, the distance R>=2D between antenna transmitting-receiving
2/ λ, namely meets Antenna Far Field condition, and wherein D is tested antenna maximum caliber, and λ is the operation wavelength of tested antenna.Test environment requires without electromagnetic interference, to reduce the delay testing error that environment causes, should be specifically noted that the connection of test cable in test process, adopts torque spanner to ensure each consistency connected.Tester should be assay approval, and instrument before the deadline.When realizing of the present invention, require to possess the microwave dark room comprising size and can meet antenna measurement far field condition, frequency range same with tested antenna, the standard time delay antenna that like-polarized three forms are consistent, can the vector network analyzer of coverage test frequency range.
The concrete steps that the present invention realizes are as follows:
(1) at microwave dark room environment, introduce three forms consistent and with the same frequency range of tested antenna, like-polarized standard time delay antenna A, B, C;
(2) by Fig. 2, standard time delay antenna A and standard time delay antenna B is formed receiving-transmitting chain, the distance R between standard time delay antenna A and standard time delay antenna B meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
1, obtain T
a+ T
b=T
1-T
aB... ... ... ... ... ... ... ... (1);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
afor the time delay of standard time delay antenna A, T
bfor the time delay of standard time delay antenna B, T
aBfor the time delay between standard time delay antenna A and standard time delay antenna B phase center;
(3) by Fig. 3, standard time delay antenna B and standard time delay antenna C is formed receiving-transmitting chain, the distance R between standard time delay antenna B and standard time delay antenna C meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
2, obtain T
b+ T
c=T
2-T
bC... ... ... ... ... ... ... ... (2);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
bfor the time delay of standard time delay antenna B, T
cfor the time delay of standard time delay antenna C, T
bCfor the time delay between standard time delay antenna B and standard time delay antenna C phase center;
(4) by Fig. 4, standard time delay antenna A and standard time delay antenna C is formed receiving-transmitting chain, the distance R between standard time delay antenna A and standard time delay antenna C meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
3, obtain T
a+ T
c=T
3-T
aC... ... ... ... ... ... ... ... (3);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
afor the time delay of standard time delay antenna A, T
cfor the time delay of standard time delay antenna C, T
aCfor the time delay between standard time delay antenna A and standard time delay antenna C phase center;
(5) utilize equation (1), time delay T that (2), (3) solve standard time delay antenna A
a:
T
A＝(T
1+T
2+T
3-T
AB-T
BC-T
AC)/2-T
2+T
BC...............(4)；
(6) by Fig. 5, standard time delay antenna A and tested antenna D is formed receiving-transmitting chain, the distance R between standard time delay antenna A and tested antenna D
1meet, R
1>=2D
1 2/ λ
1, the combination time delay value T of receiving-transmitting chain is measured with vector network analyzer
4, obtain the time delay T of tested antenna
d, T
d=T
4-T
aD-T
a... ... ... ... ... (5);
Wherein: D
1for the maximum caliber of tested antenna D, λ
1for the operation wavelength of tested antenna D, T
afor the time delay of standard time delay antenna A, T
dfor the time delay of tested antenna D, T
aDfor the time delay between standard time delay antenna A and tested antenna D phase center, T
acalculated by equation (4).
Wherein link combinations time delay T
1, T
2, T
3directly measured by vector network analyzer, T
aB, T
bC, T
aCfor the Electromagnetic Wave Propagation time delay of free space, calculate divided by the light velocity by the distance between any two standard antenna phase centers, distance theodolite (or the mechanically calibrated instrument of other high-precision calibrations) between any two standard antenna phase centers is measured, and this distance is exactly the time delay T between two antennas divided by the light velocity
aB, T
bC, T
aC.。T
aDcalculated divided by the light velocity by the distance between standard time delay antenna A and tested antenna D phase center, the distance theodolite (or the mechanically calibrated instrument of other high-precision calibrations) between standard time delay antenna A and tested antenna D phase center is measured.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. an antenna delay test method, is characterized in that step is as follows:
(1) at microwave dark room environment, introduce three forms consistent and with the same frequency range of tested antenna, like-polarized standard time delay antenna A, B, C;
(2) standard time delay antenna A and standard time delay antenna B is formed receiving-transmitting chain, the distance R between standard time delay antenna A and standard time delay antenna B meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
1, obtain T
a+ T
b=T
1-T
aB... ... ... ... ... ... ... ... ... ... ... (1);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
afor the time delay of standard time delay antenna A, T
bfor the time delay of standard time delay antenna B, T
aBfor the time delay between standard time delay antenna A and standard time delay antenna B phase center;
(3) standard time delay antenna B and standard time delay antenna C is formed receiving-transmitting chain, the distance R between standard time delay antenna B and standard time delay antenna C meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
2, obtain T
b+ T
c=T
2-T
bC... ... ... ... ... ... ... ... ... ... (2);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
bfor the time delay of standard time delay antenna B, T
cfor the time delay of standard time delay antenna C, T
bCfor the time delay between standard time delay antenna B and standard time delay antenna C phase center;
(4) standard time delay antenna A and standard time delay antenna C is formed receiving-transmitting chain, the distance R between standard time delay antenna A and standard time delay antenna C meets, R>=2D
2/ λ, utilizes vector network analyzer to measure the combination time delay value T of receiving-transmitting chain
3, obtain T
a+ T
c=T
3-T
aC... ... ... ... ... ... ... ... ... ... ... (3);
Wherein: D is the maximum caliber of standard time delay antenna, λ is the operation wavelength of standard time delay antenna, T
afor the time delay of standard time delay antenna A, T
cfor the time delay of standard time delay antenna C, T
aCfor the time delay between standard time delay antenna A and standard time delay antenna C phase center;
(5) utilize equation (1), time delay T that (2), (3) solve standard time delay antenna A
a:
T
A＝(T
1+T
2+T
3-T
AB-T
BC-T
AC)/2-T
2+T
BC...............(4)；
(6) standard time delay antenna A and tested antenna D is formed receiving-transmitting chain, the distance R between standard time delay antenna A and tested antenna D
1meet, R
1>=2D
1 2/ λ
1, the combination time delay value T of receiving-transmitting chain is measured with vector network analyzer
4, obtain the time delay T of tested antenna
d, T
d=T
4-T
aD-T
a... ... ... ... ... ... ... (5);
Wherein: D
1for the maximum caliber of tested antenna D, λ
1for the operation wavelength of tested antenna D, T
afor the time delay of standard time delay antenna A, T
dfor the time delay of tested antenna D, T
aDfor the time delay between standard time delay antenna A and tested antenna D phase center.
2. a kind of antenna delay test method according to claim 1, is characterized in that: described T
aB, T
bC, T
aCcalculate divided by the light velocity by the distance between any two standard antenna phase centers.
3. a kind of antenna delay test method according to claim 1, is characterized in that: described T
aDcalculated divided by the light velocity by the distance between standard time delay antenna A and tested antenna D phase center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210378474.0A CN103001709B (en) | 2012-09-29 | 2012-09-29 | Antenna delay test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210378474.0A CN103001709B (en) | 2012-09-29 | 2012-09-29 | Antenna delay test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103001709A CN103001709A (en) | 2013-03-27 |
| CN103001709B true CN103001709B (en) | 2015-07-08 |
Family
ID=47929885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210378474.0A Active CN103001709B (en) | 2012-09-29 | 2012-09-29 | Antenna delay test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103001709B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390169B (en) * | 2017-07-19 | 2019-07-16 | 灵动科技（北京）有限公司 | A kind of antenna parameter calibration method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055536A (en) * | 2010-10-18 | 2011-05-11 | 中国电子科技集团公司第五十四研究所 | Reflector antenna delay measurement method |
| US8145352B2 (en) * | 2008-02-28 | 2012-03-27 | Showingtime.Com, Inc. | Showing management system to automatically match and control electronic lockboxes |
| CN102647223A (en) * | 2012-03-26 | 2012-08-22 | 北京空间飞行器总体设计部 | Absolute time delay calibration method for inter-satellite link of navigational satellite |
-
2012
- 2012-09-29 CN CN201210378474.0A patent/CN103001709B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8145352B2 (en) * | 2008-02-28 | 2012-03-27 | Showingtime.Com, Inc. | Showing management system to automatically match and control electronic lockboxes |
| CN102055536A (en) * | 2010-10-18 | 2011-05-11 | 中国电子科技集团公司第五十四研究所 | Reflector antenna delay measurement method |
| CN102647223A (en) * | 2012-03-26 | 2012-08-22 | 北京空间飞行器总体设计部 | Absolute time delay calibration method for inter-satellite link of navigational satellite |
Non-Patent Citations (1)
| Title |
|---|
| 吴春邦,杨文丽,刘波.导航卫星天线相位中心及时延测试.《空间电子技术》.2009,(第1期),第4页第2部分:天线时延. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103001709A (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102647223B (en) | Absolute time delay calibration method for inter-satellite link of navigational satellite | |
| CN103064089B (en) | Method for calibrating satellite navigation digital multi-beam launching array antenna phase center | |
| CN106209269B (en) | The calibration method of spherical surface composite array near-field effect in a kind of radio freqency simulation system | |
| CN103217589B (en) | Phased array antenna equivalent isolation degree testing method | |
| TWI540792B (en) | A far-field calibration system of an antenna arrary system | |
| CN110568413A (en) | test system and method integrating radar calibration, active transceiving and measurement parameters | |
| CN105973943B (en) | A kind of absorbing material traveling wave rejection test device and method | |
| CN102788909B (en) | Method for measuring surface accuracy of antenna by adopting holographic method | |
| CN106777704B (en) | Method and system for predicting electromagnetic coupling degree between antennas on medium coating target | |
| CN107024625A (en) | High precision measurement method | |
| CN103257340B (en) | Method for calibrating amplitude consistency of a plurality of ground receivers with radar satellite | |
| CN107976671B (en) | Radar target angle calculation method suitable for sparse array antenna | |
| CN115963460A (en) | Phase error compensation method and system between light and small satellite SAR antenna boards | |
| CN111273239A (en) | External field calibration compensation method for pointing accuracy of inter-satellite link phased array antenna | |
| Lin et al. | An improved antenna group delay measurement method using a three-antenna extrapolation technique | |
| CN102445177B (en) | Method, device and system for measuring azimuth angle and pitch angle of antenna | |
| CN103001709B (en) | Antenna delay test method | |
| CN103954945A (en) | Method for carrying out full-scale calibration on microwave distance-measuring radar based on optical fiber delay line | |
| CN111929708B (en) | Antenna and receiving channel calibration system and method for signal quality evaluation | |
| Yang et al. | Analysis of channel characteristics between satellite and space station in terahertz band based on ray tracing | |
| CN102055536A (en) | Reflector antenna delay measurement method | |
| Zhang et al. | Research on the measurement of antennas radiation characteristics based on small unmanned aerial vehicle platform | |
| Han et al. | Analysis of cross-polarization jamming for phase comparison monopulse radars | |
| Mi et al. | SAR Antenna Pattern Measurement by Internal Calibration Method for GF‐3 Satellite | |
| Li et al. | Over-the-horizon time and frequency synchronization for maneuverable radar system based on troposcatter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |