CN106990417A - A kind of satellite repeater test system calibration method - Google Patents
A kind of satellite repeater test system calibration method Download PDFInfo
- Publication number
- CN106990417A CN106990417A CN201710133708.8A CN201710133708A CN106990417A CN 106990417 A CN106990417 A CN 106990417A CN 201710133708 A CN201710133708 A CN 201710133708A CN 106990417 A CN106990417 A CN 106990417A
- Authority
- CN
- China
- Prior art keywords
- calibration
- vector network
- network analyzer
- ports
- frequency
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
A kind of satellite repeater test system calibration method, step is：(1) full frequency band phase reference is set up to the receiver of vector network analyzer；(2) in units of the frequency range contained by satellite to be measured repeater package, the leading portion link of satellite repeater test system is calibrated；(3) calibration of back segment up-link is carried out in units of the uplink beam contained by satellite to be measured repeater package；(4) calibration of back segment downlink is carried out in units of the downlink wave beam contained by satellite to be measured repeater package；(5) result of step (2)~step (4) is combined into complete satellite-ground link calibration data.The inventive method binding test system theory of constitution and satellite repeater framework, take full advantage of the transceiver frequency simultaneous tuning characteristic and scan calibration function of vector network analyzer, multiple Measurement channel parallel synchronous completion frequency sweep calibrations are set up, the calibration efficiency of calibration before communication satellite coverage test, calibration accuracy can be significantly improved, calibrate and implement convenience and calibration automaticity.
Description
Technical field
The invention belongs to the communications field, it is related to a kind of calibration program of satellite repeater test system, is particularly suitable for use in star
Upper wave beam and number of vias are more, the combination that interlinks is complicated and the larger extensive transponder of bandwidth chahnel, can ensure high school
On the premise of quasi- precision, the calibration efficiency of system is substantially improved, so as to accelerate test and the Development Schedule of whole star.
Background technology
With continuing to develop for telecommunication satellite platform, and continuous improvement of the user to traffic capacity demands, telecommunication satellite
Antenna beam in payload is more and more, and transponder way is also more and more, and the bandwidth of forwarding channel is increasing, different
Interlinkage between wave beam is also become increasingly complex, and radio frequency testing task amount is dramatically increased, and load test efficiency has become telecommunication satellite
Bottleneck in development process.Wherein, before satellite repeater test, it is necessary to using be tested the input of transponder, delivery outlet face as
The plane of reference is calibrated to ground testing system, therefore collimation technique is one of key technology in transponder test.Particularly
For the test of extensive communications transponder, system calibration occupies great proportion during each stage electrical measurement of whole star, its
Calibration accuracy also directly affects the measuring accuracy of whole star.
At present, communication satellite coverage test system is by signal source, frequency spectrograph, power meter, switch matrix and test cable
Composition, system calibration scheme is that transponder passage, as base unit, is carried out respectively for uplink and downlink difference test link using on star
Calibration.The calibrating principle of up-link is as shown in Figure 1.Signal source exports the radiofrequency signal of up frequency, via on switch matrix
Row path and rear end upper planet ground test cable, reach power sensor B, while couplings of the power sensor A via coupler 2
Mouth monitors that rate of citing sb. for meritorious service sensors A and power sensor B reading difference are the up of the frequency to signal source power output
Calibration data.Down link calibration theory diagram is as shown in Figure 2.Signal source exports the radiofrequency signal of descending frequency, via switch
Coupler 2 and SW1 in matrix with entering lower planet test cable and switch matrix downlink, reach frequency spectrograph (coupling aperture)
And power sensor B (straightthrough port), then switching SW1 makes radiofrequency signal ingoing power sensors A, rate of citing sb. for meritorious service sensors A and work(
Rate sensor B reading difference is the descending power meter branch road calibration data of the frequency, the reading of rate of citing sb. for meritorious service sensors A and frequency spectrograph
Number difference is the downlink frequency spectrometer branch road calibration data of the frequency.
In order to improve the efficiency of test, occur in that the transponder test system based on vector network analyzer, its mainly by
One vector network analyzer, stub cable and two stars ground test cable composition, system group between switch matrix, two instruments
It is as shown in Figure 5 into block diagram.For this test system, existing calibration program has limitation or not applied to, major embodiment
：
(1) existing calibration process needs to complete jointly with frequency spectrograph using signal source, and does not possess this in Fig. 5 test systems
Different tester, and switch matrix in test system also done adaptation on the basis of existing and (added and swear
Measure the interface of Network Analyzer), test link is varied from calibration link.If specially adding signal in the test system
The equipment such as source, frequency spectrograph are used for system calibration, then testing cost can be substantially improved, and system complexity will also be significantly increased, and
Connection mismatch risk increases when increase equipment also results in calibration, and the non-ideal frequency response of instrument itself can also cause test result can
Reliability is reduced；
(2) existing calibration method is carried out respectively in units of transponder passage according to the different links of uplink and downlink, and every
, again need to be in the way of fixed frequency stepping in each passage of individual link, frequency measures link Insertion Loss (i.e. calibration data) one by one.
Therefore, for uplink and downlink link is more, passage is more, broader bandwidth, the extensive transponder of the less multichannel of frequency step are calibrated
When, system calibration procedure will be extremely cumbersome, extremely inefficient, or even can influence the Development Schedule of whole star.
The content of the invention
Present invention solves the technical problem that being：Overcoming the deficiencies in the prior art, there is provided a kind of new satellite repeater survey
The calibration method of test system, binding test system theory of constitution and satellite repeater framework, have been divided into leading portion chain by test system
Road (stub cable 1,2 between arrow net and instrument) and back segment link (switch matrix and upper and lower planet test cable) two parts are distinguished
Calibration is completed, and every section is calibrated the transceiver frequency simultaneous tuning characteristic for all taking full advantage of vector network analyzer and scanning school
Quasi- function, while setting up multiple Measurement channel parallel synchronous completes frequency sweep calibration, can significantly improve communication satellite coverage survey
Convenience and calibration automaticity are implemented in the calibration efficiency of calibration, calibration accuracy, calibration before examination.
The present invention technical solution be：A kind of satellite repeater test system calibration method, comprises the following steps：
(1) full frequency band phase reference is set up to the receiver of vector network analyzer；
(2) in units of the frequency range contained by satellite to be measured repeater package, the leading portion link of satellite repeater test system is entered
Row calibration；Described leading portion link include vector network analyzer in itself, and vector network analyzer and switch matrix company
Wiring cable；
(3) calibration of back segment up-link is carried out in units of the uplink beam contained by satellite to be measured repeater package；Described
Back segment up-link includes the up connection of the uplink and switch matrix and satellite to be measured transponder inside switch matrix
Cable；
(4) calibration of back segment downlink is carried out in units of the downlink wave beam contained by satellite to be measured repeater package；Described
Back segment downlink includes the descending connection of the downlink and switch matrix and satellite to be measured transponder inside switch matrix
Cable；
(5) result of step (2)~step (4) is combined into complete satellite-ground link calibration data.
The method that full frequency band phase reference is set up in the step (1) is：
(201) USB port of phase reference part is connected to the USB port of vector network analyzer, by the feed of phase reference part
Mouth is connected to power supply, and the input port of phase reference part is connected to the when base reference port of vector network analyzer；By electronics
Calibrating device is connected to the USB port of vector network analyzer；By the GPIB mouths of power meter and the GPIB (0) of vector network analyzer
Controller mouthfuls are connected；Described vector network analyzer is PNA-X series；
(202) reset vector Network Analyzer, sets up Measurement channel, setting initial frequency and termination frequency, vector network
Phase reference part that analyzer automatic identification is connected, Electronic Calibration part；
(203) output port of phase reference part is connected with the PORT2 ports of vector network analyzer, simultaneously will
Top two row of horizontal wire jumpers, 90 degree of upsets are automatic using vector network analyzer afterwards to plumbness on the right side of PORT2 ports
Measuring and calculating；
(204) the PORTA ports of Electronic Calibration part are connected with the PORT1 ports of vector network analyzer, while PORT2
Two top row's wire jumpers still keep plumbness on the right side of port, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(205) the PORTA ports of Electronic Calibration part are connected with the PORT2 ports of vector network analyzer, while PORT2
Two top row's wire jumpers still keep plumbness on the right side of port, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(206) the PORT1 ports of vector network analyzer are connected with PORT2 ports, while top on the right side of PORT2 ports
Two row of horizontal wire jumpers still keep plumbness, vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(207) power sensor is connected to the PORT1 ports of vector network analyzer, while by the right side of PORT2 ports
Two top row's wire jumpers recover to horizontality, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(208) the PORTA ports of Electronic Calibration part are connected with the PORT1 ports of vector network analyzer, while PORT2
Two top row's wire jumpers still keep horizontality on the right side of port, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(209) the PORTA ports of Electronic Calibration part are connected with the PORT2 ports of vector network analyzer, while PORT2
Two top row's wire jumpers still keep horizontality on the right side of port, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(210) the PORT1 ports of vector network analyzer are connected with PORT2 ports, while top on the right side of PORT2 ports
Two row of horizontal wire jumpers still keep horizontality, vector network analyzer automatic measurement ＆ calculation is utilized afterwards.
It is to the calibration method of leading portion link in described step (2)：
(301) Electronic Calibration part is connected to the USB port of vector network analyzer, by the GPIB mouths and vector network of power meter
Controller mouthfuls of the GPIB (0) of analyzer is connected；
(302) reset vector Network Analyzer, newly-built two Measurement channels, one of Measurement channel<
Measurement Class>Select be<Scalar Mixer/Converters+Phase>, setting scan mode is Linear
Frequency, sets intermediate-frequency bandwidth, number of scan points, calibration frequency scope and calibration level；Another Measurement channel<
Measurement Class>Select be<Swept IMD Converters>, setting scan mode is Swept fc, sets double
Wave frequency is poor, dominant frequency signal receives intermediate-frequency bandwidth, inter-modulated signal and receives intermediate-frequency bandwidth, calibration frequency scope；
(303) error threshold of the calibration of power, and the full frequency band phase reference being had built up in invocation step (1) are set；
(304) power sensor is connected with the PORT1 ports of vector network analyzer, vector network analyzer enters automatically
Row source power is calibrated and the calibration of PORT1 port references receiver power；
(305) the PORTA ports of Electronic Calibration part are connected with the PORT1 ports of vector network analyzer, by electronics school
The PORTB ports of quasi- part are connected with the PORT2 ports of vector network analyzer, and vector network analyzer carries out Two-port netwerk SC automatically
Parametric calibration, and the response calibration of PORT2 end receivers.
The method of progress back segment up-link calibration is in described step (3)：
(401) Measurement channel is set up, calibration initial frequency is set, frequency and calibration level is terminated；
(402) the PORT1 ports of vector network analyzer are passed through into stub cable between instrument 1 and the PORTA of Electronic Calibration part
Port is connected, by PORTB port of the PORT2 ports of vector network analyzer by stub cable between instrument 2 and Electronic Calibration part
It is connected, opens the radio frequency output of vector network analyzer, carries out the S parameter calibration of vector network analyzer；
(403) the PORT1 ports of vector network analyzer are passed through into stub cable between instrument 1 and A mouthfuls of the arrow net of switch matrix
Connection, by the upper planet connected on switch matrix rear board test cable another port pass through stub cable between instrument 2 with arrow
The PORT2 ports for measuring Network Analyzer are connected, and measurement parameter elects S21 as, open the radio frequency output of vector network analyzer, measurement
Link Insertion Loss and chain-circuit time delay at the up test wave beam different frequent points.
The method of progress back segment down link calibration is in described step (4)：
(501) Measurement channel is set up, calibration initial frequency is set, frequency and calibration level is terminated；
(502) the PORT1 ports of vector network analyzer are passed through into stub cable between instrument 1 and the PORTA of Electronic Calibration part
Port is connected, by PORTB port of the PORT2 ports of vector network analyzer by stub cable between instrument 2 and Electronic Calibration part
It is connected, opens the radio frequency output of vector network analyzer, carries out the S parameter calibration of vector network analyzer；
(503) the PORT2 ports of vector network analyzer are passed through into stub cable between instrument 1 and B mouthfuls of the arrow net of switch matrix
Connection, by the upper planet connected on switch matrix the another port of test cable pass through stub cable between instrument 2 and vector network
The PORT1 ports of analyzer are connected, and the corresponding switch matrix internal path of the uplink beam is cut through, and arrow net measurement parameter is elected as
S21, opens the radio frequency output of vector network analyzer, measures link Insertion Loss and link at the descending test wave beam different frequent points
Time delay.
The advantage of the present invention compared with prior art is：
(1) present invention takes full advantage of the hardware synchronization characteristic of test system nucleus equipment vector network analyzer, calibration
Process is completed by arrow net built-in algorithms, therefore calibration method automaticity of the present invention is higher, and system robustness is stronger, and calibration is real
Apply convenience higher, artificial participation is lower, this may be such that the reliability of calibration process is higher, and error rate is lower；
(2) present invention is added using leading portion chain calibration in the segment link calibration program of back segment chain calibration, same frequency range
Transponder (such as all Ku band transponders or all C band transponders) only needs to carry out a leading portion chain calibration, same
Wave beam (i.e. one complete physical testing link) interior transponder only need carry out a back segment chain calibration, this compared with it is existing with
Transponder passage is the calibration program of base unit, and calibration item is less.In addition, the present invention, which is utilized, swears net scan calibration function,
Compared with existing by frequency calibration program, efficiency is substantially improved.For example, one logical with 10 interlinkage wave beams (under 5 on 5) and 10
The C band transponders in road, the calibration item that existing calibration program needs for 10 × 10=100, it is necessary to about 2000 minutes complete,
And the calibration program of the present invention only needs 1 (1 leading portion chain calibration)+5 × 2=11 calibration item, it is necessary to which about 200 minutes complete
Into efficiency improves 10 times；
(3) present invention uses calibration of power technology, have modified the non-ideal Frequency Response of tester in itself, and by arrow
Net dual-port SC parametric calibrations, it is multinomial to test system port mismatch error, directional error, frequency response error, lobe error etc.
Error is corrected, than only doing calibration to link Insertion Loss in existing scheme, the school for having more fully calibration spreadability and Geng Gao
Quasi- precision.In addition, the present invention has carried out accurate calibration and De- embedding, therefore group delay, width to the phase-frequency characteristic of test system
Distributed mutually characteristic equiphase class testing result is than traditional scheme more true and accurate；
(4) present invention design multi-channel parallel calibration program, synchronously completes the test such as power class, frequency response class, non-linear class
Complexity is implemented in calibration before the survey of project, further reduction calibration, lifts calibration efficiency.
Brief description of the drawings
Fig. 1 is existing calibration program up-link calibrating principle block diagram；
Fig. 2 is existing calibration program down link calibration theory diagram；
Fig. 3 is system leading portion chain calibration theory diagram in the present invention；
Fig. 4 is system back segment chain calibration theory diagram in the present invention；
Fig. 5 is test principle block diagram in the present invention；
Fig. 6 is the internal structure block diagram of test system switch matrix in the present invention.
Embodiment
Test system hardware in the present invention is short between a vector network analyzer, switch matrix, two instruments
Cable and two stars ground test cable composition.Also need additionally to use during calibration a power meter (comprising power sensor),
One phase reference part (comb signal generator) and an Electronic Calibration part.
Vector network analyzer is serial for the PNA-X of Keysight companies, and need to carry Scalar Mixer/
Converters+Phase measurement patterns, Swept IMD Converters measurement patterns and 083,087 option, and
Firmware version numbers need to be A09.80.03 or higher.In addition, also needing to successively use phase reference part in calibration process
U9391F (50GHz comb signal generator), power meter N1914 (carrying power sensor E4413A), Electronic Calibration part
N4692A, is set up, source power is calibrated and dual-port SC parametric calibrations with being respectively completed vector network analyzer phase reference.
Principle and each port-mark inside switch matrix are illustrated in figure 6 in test system, it is with opening in traditional test
It is individually designed and add up-downgoing vector network analyzer test access (thickened portion in Fig. 6) on the basis of closing matrix.
I.e. up vector network analyzer test access increases the RF switch (SW1 in Fig. 6) of one and half steel cables and an alternative,
It is connected into the existing wave beam branch switch in rear end (SW2 in Fig. 6).The up test access of newly-increased vector network analyzer is evaded
Many radio frequency passive devices such as combiner, coupler in traditional scheme switch matrix so that test link simpler, Insertion Loss is more
It is small, and it also avoid that matches criteria load is not installed and causes the risk of microwave radiation and link mismatch.Up vector network
The input port of analyzer test access is newly-increased, and port-mark is " A mouthfuls of arrow net ", and output port is original, and port-mark is
" satellite uplink 1, satellite uplink 2, satellite uplink 3 ..., satellite uplink 6 ... ".Descending vector network analyzer test access is only
An optional branch road has been increased newly in the RF switch of multiselect one (SW4 in Fig. 6) of rear class, and remaining is constant.Descending vector network
The input port of analyzer test access to be original, port-mark for " satellite downlink 1, satellite downlink 2, satellite downlink 3 ..., defend
Star descending 6 ... ", increase an output port newly, port-mark is " B mouthfuls of arrow net ".
The present invention's realizes that step is as follows：
1st, arrow net receiver phase benchmark is set up
Because satellite repeater is frequency conversion system, therefore the transmitting-receiving end signal alien frequencies of vector network analyzer, and arrow net connects
Phase reference of the receipts machine at different frequent points is inconsistent.And group delay characteristic, width distributed mutually characteristic of satellite repeater etc. is tested
Project needs strict measurement frequency conversion phase, therefore it is required that the measuring receiver of vector network analyzer has unification in each frequency
Phase reference.So, before test system calibration is carried out, arrow net receiver broadband need to be initially set up and unify phase reference.Note,
Unified phase reference sets up process without being carried out before testing every time.If test existing phase reference file in arrow net
(calset files), and frequency range can also cover transponder to be measured, then following processes directly perform step 2 without carrying out
.
The present invention, as phase reference part, is received using the comb signal generator U9391F of Keysight companies for arrow net
Machine provides the phase relativeness between different frequency.
System connection is carried out first：
(1) phase reference part U9391F USB port is connected to the USB port of arrow net；U9391F feed mouthful is passed through into feed
Line is connected to any one 12V voltage stabilizing out-put supply；U9391F input ports are connected to the 10MHz REF of arrow net rear board
Base reference port during OUT, arrow net provides work clock to U9391F；
(2) Electronic Calibration part N4692A is connected to arrow net USB port by USB connecting lines；
(3) by power meter N1914 (being connected with power sensor E4413A) GPIB mouths and the GPIB (0) of arrow net rear board
Controller mouthfuls are connected, with using swearing that net completes power collecting and calibration come elastic calibration device.
Then parameter setting is carried out：
(1) (Preset) arrow net is resetted, Measurement channel is set up,<Measurement Class>Select be<Scalar
Mixer/Converters+Phase>,<Cal→Phase Reference Wizard>It is middle to set, stop frequency (general
Beginning set of frequency is 55MHz, terminates frequency and is set according to the minimum value in calibration instrument maximum operating frequency, that is, causes system
The frequency coverage of one phase reference is as wide as possible, to adapt to the demand of different model)；
(2) arrow net automatic identification connects the sequence number of phase reference part, Electronic Calibration part and power sensor.
Finally carry out phase reference foundation：
(1) phase reference part U9391F output port is connected with the PORT2 of arrow net, while will be top on the right side of PORT2
The upset of 90 degree of two row of horizontal wire jumper to plumbness, click on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(2) Electronic Calibration part N4692A PORTA is connected with the PORT1 of arrow net, while two rows top on the right side of PORT2
Wire jumper still keeps plumbness, clicks on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(3) Electronic Calibration part N4692A PORTA is connected with arrow net PORT2, while two rows top on the right side of PORT2 jump
Line still keeps plumbness, clicks on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(4) PORT1 for swearing net is connected with PORT2 using the steady phase stub cable of fixed ampllitude, while two rows top on the right side of PORT2
Horizontal wire jumper still keeps plumbness, clicks on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(5) power sensor E4413A is connected to arrow net PORT1, while two row's wire jumpers top on the right side of PORT2 are extensive
Again to horizontality, click on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(6) Electronic Calibration part N4692A PORTA is connected with the PORT1 of arrow net, while two rows top on the right side of PORT2
Wire jumper still keeps horizontality, clicks on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(7) Electronic Calibration part N4692A PORTA is connected with arrow net PORT2, while two rows top on the right side of PORT2 jump
Line still keeps horizontality, clicks on afterwards<measure>, arrow net progress automatic measurement ＆ calculation；
(8) PORT1 for swearing net is connected with PORT2 using the steady phase stub cable of fixed ampllitude, while two rows top on the right side of PORT2
Horizontal wire jumper still keeps horizontality, clicks on afterwards<measure>, arrow net progress automatic measurement ＆ calculation.
Vector network analyzer has built-in phase reference to set up algorithm, and tester need to only carry out arrow network parameters and set,
And connect phase reference part, Electronic Calibration part, power meter and power sensor respectively by above-mentioned steps, swear the phase of net receiver
Measuring and calculating and phase reference are set up process and completed completely by the internal automatic control of arrow net.
So far, swear that the broadband of net receiver is unified phase reference foundation and finished, by the current arrow with unified phase reference
Net measuring environment is stored as calset files, in case being called during follow-up leading portion chain calibration.
2nd, leading portion chain calibration
The inventive method devises the system calibration scheme that leading portion chain calibration and back segment chain calibration are combined.Wherein,
Leading portion chain calibration belongs to the self calibration of arrow net system, is only calibrated to the connection end of arrow net dual-port stub cable and switch matrix
Face.Back segment chain calibration to switch matrix and rear end star test cable do the measurement of Insertion Loss and time delay.When transponder is tested, after
Section link calibration data is embedded into leading portion chain calibration environment, is combined into the calibration data of complete test link.Leading portion link
Calibration does not have strict priority execution sequence with back segment chain calibration, generally first carries out leading portion chain calibration, then carry out
Back segment chain calibration.
Leading portion chain calibration is carried out in units of frequency range, i.e., same frequency range only needs to carry out a leading portion chain calibration, different
Frequency range need to carry out multiple leading portion chain calibration respectively.For example, repeater package to be measured contains 20 road C band transponders, 15 road Ku frequency ranges
Transponder and 10 road Ka band transponders, then need to carry out 3 leading portion chain calibrations (C frequency ranges once, Ku frequency ranges once, Ka frequencies
Duan Yici).Below by taking a band transponder as an example, leading portion chain calibration process is described in detail.If transponder to be measured has n frequency
Section, only need to sequentially repeat n following step.
During leading portion chain calibration, keep the connection status of Electronic Calibration part N4692A and power meter N1914 in step 1 constant
(being connected respectively by USB port and GPIB mouthfuls with arrow net), parameter setting is carried out afterwards：
(1) reset (Preset) arrow net, newly-built 2 channel (calibration of binary channels parallel synchronous), wherein channel1's
<Measurement Class>Select be<Scalar Mixer/Converters+Phase>, channel2's<
Measurement Class>Select be<Swept IMD Converters>；
(2) channel1 is chosen,<Mixer Setup→Sweep>In, it is frequency to set scan mode (Sweep Type)
Rate scan mode (Linear Frequency), sets intermediate-frequency bandwidth (IF Bandwidth) (being traditionally arranged to be 1KHz), sets
Number of scan points (Number of Points) (being calculated according to calibration bandwidth as defined in technological document and frequency step)；<
Mixer Setup→Mixer Frequency>In, according to parameter on star and measuring technology documentation requirements, calibration frequency model is set
Enclose, notice that the frequency range need to cover all frequencies of the transponder to be measured in the frequency range (for example, transponder to be measured includes 20 altogether
Road C band transponders, then calibration frequency scope need to cover all frequencies of this 20 paths)；<Mixer Setup→
Power>Middle setting calibration level, is typically set to 0dBm；
(3) channel2 is chosen,<Swept IMDX Setup→Tone Frequency>In, scan mode is set
Frequency sweep mode (Swept fc) centered on (Sweep Type), sets double wave frequency difference (Fixed DeltaF), is typically set to
2MHz, sets dominant frequency signal to receive intermediate-frequency bandwidth (Main Tone IFBW) and inter-modulated signal reception intermediate-frequency bandwidth (IM Tone
IFBW), typically it is set to 100KHz and 1KHz；<Swept IMDX Setup→Mixer Frequency>Middle setting school
Quasi- frequency range (frequency range need to be consistent with the setting in channel1)；
(4) select<Cal→Start Cal→Cal All Channel>, binary channels parallel synchronous calibration is carried out, will<
Phase Correction Method>Select be<Use Receiver Characterization Calset>, and call step
The calset files stored in rapid 1.The error threshold (Accuracy Tolerance) of the calibration of power is finally set, typically
It is set to 0.02dBm.
After parameter setting is completed, the implementation of leading portion chain calibration is proceeded by, leading portion chain calibration process is divided into two steps, its
Catenation principle block diagram is as shown in Figure 3.Comprise the following steps that：
(1) power sensor is connected with arrow net PORT1 using stub cable between instrument 1, clicked on afterwards<measure>, arrow
The internal automatic source power that carries out of net is calibrated and the PORT1 reference receiver calibrations of power；
(2) Electronic Calibration part PORTA is connected with the PORT1 of arrow net using stub cable between instrument 1, utilizes short electricity between instrument
Electronic Calibration part PORTB is connected by cable 2 with arrow net PORT2, clicks on afterwards<measure>, the internal automatic progress Two-port netwerk of arrow net
SC parametric calibrations, and the response calibration of PORT2 receivers, until occurring terminating interface, are clicked on<finish>.
Vector network analyzer has built-in calibration algorithm, and tester need to only carry out arrow network parameters and set, and by above-mentioned
Step connects Electronic Calibration part, power meter and power sensor respectively, and the calibration of power and SC parametric calibrations process are completely by arrow net
Internal automatic control is completed.
So far, leading portion chain calibration is finished, and the calibration result of current frequency range finally is stored as into .csa in arrow net
File, in case being called during follow-up test.
3rd, back segment chain calibration
Back segment chain calibration theory diagram is as shown in figure 4, be divided into up-link calibration and down link calibration.Calibration is with ripple
Beam is carried out for unit, i.e., same wave beam only needs to carry out a back segment chain calibration, and different beams need to carry out multiple back segment chain respectively
Calibrate on road.For example, repeater package to be measured contains 5 uplink beams and 5 downlink wave beams, then need to carry out 10 back segment chain calibrations (5
It is secondary it is up, 5 times it is descending).Below by taking 1 uplink beam and 1 downlink wave beam as an example, up-link calibration process is described in detail and descending
Chain calibration process.If transponder to be measured has n uplink beam and m downlink wave beam, sequentially it need to only repeat on n times
Line link calibration steps and m down link calibration step, n and m are positive integer.
(1) up-link is calibrated
Initially set up Measurement channel.<Measurement Class>Select be<Standard>.<Freq>In, according to
Parameter and measuring technology documentation requirements, which are set, on star calibrates, stops frequency, notices that the frequency range need at least cover the upgoing wave
All channel frequences in beam.<Power>Middle setting calibration level, is typically set to 0dBm.
Then arrow net S parameter self calibration is carried out.One end of stub cable between instrument 1 is connected with the PORT1 of arrow net, the other end
It is connected with Electronic Calibration part PORTA.One end of stub cable between instrument 2 is connected with the PORT2 of arrow net, the other end and Electronic Calibration
Part PORTB is connected.Open arrow net radio frequency output (Power on), selection<Cal→Cal Wizard>, click on<measure>, enter
Row arrow net S parameter calibration.Note, the S parameter self-correcting result can be used for the uplink of all uplink beams in the calibration frequency range
Calibrate on road.
Up-link calibration is finally carried out to implement.Stub cable 1 and arrow net PORT1 connection end are constant between holding instrument, separately
One end is connected to " arrow net A mouthfuls " port on switch matrix front panel, by the wave beam corresponding upper planet ground test cable one end
Be connected to uplink beam port corresponding on switch matrix rear board (" satellite uplink 1 " or " satellite uplink 2 " or ... or " defend
Star up 6 " or ...), the other end is connected to one end of stub cable 2 between instrument, and (other end of stub cable 2 is kept and arrow net between instrument
PORT2 connection it is constant), the corresponding switch matrix internal path of the uplink beam is cut through, arrow net measurement parameter elect as
S21, opens arrow net radio frequency output (Power on), and it is logM to set measurement data form (Format), measures the uplink beam
Link Insertion Loss at different frequent points, and the S2P files inside arrow net are stored as, setting measurement data form (Format) is
Delay, measures the chain-circuit time delay at the uplink beam different frequent points, and is equally stored as the S2P files inside arrow net.
So far, the up-link calibration of the uplink beam is finished, and the S2P files stored real-time calling and can be looked into
Read.
(2) down link calibration
Initially set up Measurement channel.<Measurement Class>Select be<Standard>.<Freq>In, according to
Parameter and measuring technology documentation requirements, which are set, on star calibrates, stops frequency, notices that the frequency range need at least cover the down going wave
All channel frequences in beam.<Power>Middle setting calibration level, is typically set to 0dBm.
Then the S parameter calibration of arrow net is carried out.By one end of stub cable between instrument 1 with arrow net PORT1 be connected, the other end with
Electronic Calibration part PORTA is connected.One end of stub cable between instrument 2 is connected with the PORT2 of arrow net, the other end and Electronic Calibration part
PORTB is connected.Open arrow net radio frequency output (Power on), selection<Cal→Cal Wizard>, click on<measure>, carry out
Swear the calibration of net S parameter.Note, the S parameter self-correcting result can be used for the downlink of all downlink wave beams in the calibration frequency range
Calibration.
Finally carry out down link calibration implementation.The PORT2 of stub cable 2 and arrow net connection end is constant between holding instrument,
The other end is connected to " arrow net B mouthfuls " port on switch matrix front panel, by the wave beam corresponding lower planet ground test cable one
End be connected to downlink wave beam port corresponding on switch matrix rear board (" satellite downlink 1 " or " satellite downlink 2 " or ... or
" satellite downlink 6 " or ...), the other end be connected to stub cable 1 between instrument one end (between instrument the other end of stub cable 1 keep and
Arrow net PORT1 connection is constant), the corresponding switch matrix internal path of the downlink wave beam is cut through, by switch matrix front panel
" frequency spectrograph " port (i.e. coupling aperture) connection matches criteria load, arrow net measurement parameter elects S21 as, opens the radio frequency output of arrow net
(Power on), it is logM to set measurement data form (Format), measures the link Insertion Loss at the downlink wave beam different frequent points,
And the S2P files inside arrow net are stored as, it is Delay to set measurement data form (Format), measures the downlink wave beam different
Chain-circuit time delay at frequency, and equally it is stored as the S2P files inside arrow net.
So far, the down link calibration of the downlink wave beam is finished, and the S2P files stored real-time calling and can be looked into
Read.
During test, back segment link calibration data is embedded in leading portion chain calibration environment as amount of bias, complete to be combined into
Satellite-ground link calibration data.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (5)
1. a kind of satellite repeater test system calibration method, it is characterised in that comprise the following steps：
(1) full frequency band phase reference is set up to the receiver of vector network analyzer；
(2) in units of the frequency range contained by satellite to be measured repeater package, school is carried out to the leading portion link of satellite repeater test system
It is accurate；Described leading portion link include vector network analyzer in itself, and vector network analyzer and switch matrix connecting line
Cable；
(3) calibration of back segment up-link is carried out in units of the uplink beam contained by satellite to be measured repeater package；Described back segment
Up-link includes the up connection cables of the uplink and switch matrix and satellite to be measured transponder inside switch matrix；
(4) calibration of back segment downlink is carried out in units of the downlink wave beam contained by satellite to be measured repeater package；Described back segment
Downlink includes the descending connection cables of the downlink and switch matrix and satellite to be measured transponder inside switch matrix；
(5) result of step (2)~step (4) is combined into complete satellite-ground link calibration data.
2. a kind of satellite repeater test system calibration method according to claim 1, it is characterised in that：The step
(1) method that full frequency band phase reference is set up in is：
(201) USB port of phase reference part is connected to the USB port of vector network analyzer, by the feed mouthful of phase reference part even
Power supply is connected to, the input port of phase reference part is connected to the when base reference port of vector network analyzer；By Electronic Calibration
Part is connected to the USB port of vector network analyzer；By the GPIB mouths of power meter and the GPIB (0) of vector network analyzer
Controller mouthfuls are connected；Described vector network analyzer is PNA-X series；
(202) reset vector Network Analyzer, sets up Measurement channel, setting initial frequency and termination frequency, vector network analysis
Phase reference part that instrument automatic identification is connected, Electronic Calibration part；
(203) output port of phase reference part is connected with the PORT2 ports of vector network analyzer, while by PORT2 ends
Top two row of horizontal wire jumpers, 90 degree of upsets utilize vector network analyzer automatic measurement ＆ calculation afterwards to plumbness on the right side of mouthful；
(204) the PORTA ports of Electronic Calibration part are connected with the PORT1 ports of vector network analyzer, while PORT2 ports
Two top row's wire jumpers of right side still keep plumbness, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(205) the PORTA ports of Electronic Calibration part are connected with the PORT2 ports of vector network analyzer, while PORT2 ports
Two top row's wire jumpers of right side still keep plumbness, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(206) the PORT1 ports of vector network analyzer are connected with PORT2 ports, while top two on the right side of PORT2 ports
Row of horizontal wire jumper still keeps plumbness, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(207) power sensor is connected to the PORT1 ports of vector network analyzer, while will be top on the right side of PORT2 ports
Two row's wire jumpers recover to horizontality, vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(208) the PORTA ports of Electronic Calibration part are connected with the PORT1 ports of vector network analyzer, while PORT2 ports
Two top row's wire jumpers of right side still keep horizontality, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(209) the PORTA ports of Electronic Calibration part are connected with the PORT2 ports of vector network analyzer, while PORT2 ports
Two top row's wire jumpers of right side still keep horizontality, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards；
(210) the PORT1 ports of vector network analyzer are connected with PORT2 ports, while top two on the right side of PORT2 ports
Row of horizontal wire jumper still keeps horizontality, and vector network analyzer automatic measurement ＆ calculation is utilized afterwards.
3. a kind of satellite repeater test system calibration method according to claim 1 or 2, it is characterised in that：Described
It is to the calibration method of leading portion link in step (2)：
(301) Electronic Calibration part is connected to the USB port of vector network analyzer, by the GPIB mouths and vector network analysis of power meter
Controller mouthfuls of the GPIB (0) of instrument is connected；
(302) reset vector Network Analyzer, newly-built two Measurement channels, one of Measurement channel<Measurement
Class>Select be<Scalar Mixer/Converters+Phase>, setting scan mode is Linear Frequency, if
Put intermediate-frequency bandwidth, number of scan points, calibration frequency scope and calibration level；Another Measurement channel<Measurement Class
>Select be<Swept IMD Converters>, setting scan mode is Swept fc, sets double wave frequency difference, dominant frequency signal to connect
Receive intermediate-frequency bandwidth, inter-modulated signal and receive intermediate-frequency bandwidth, calibration frequency scope；
(303) error threshold of the calibration of power, and the full frequency band phase reference being had built up in invocation step (1) are set；
(304) power sensor is connected with the PORT1 ports of vector network analyzer, vector network analyzer carries out source automatically
The calibration of power and the calibration of PORT1 port references receiver power；
(305) the PORTA ports of Electronic Calibration part are connected with the PORT1 ports of vector network analyzer, by Electronic Calibration part
PORTB ports be connected with the PORT2 ports of vector network analyzer, vector network analyzer carries out Two-port netwerk SC parameters automatically
Calibration, and the response calibration of PORT2 end receivers.
4. a kind of satellite repeater test system calibration method according to claim 3, it is characterised in that：Described step
(3) method of progress back segment up-link calibration is in：
(401) Measurement channel is set up, calibration initial frequency is set, frequency and calibration level is terminated；
(402) by PORTA port of the PORT1 ports of vector network analyzer by stub cable between instrument 1 and Electronic Calibration part
It is connected, the PORT2 ports of vector network analyzer is connected by stub cable between instrument 2 with the PORTB ports of Electronic Calibration part,
The radio frequency output of vector network analyzer is opened, the S parameter calibration of vector network analyzer is carried out；
(403) the PORT1 ports of vector network analyzer are connected by stub cable between instrument 1 with A mouthfuls of the arrow net of switch matrix,
By the upper planet connected on switch matrix rear board the another port of test cable pass through stub cable between instrument 2 and vector network
The PORT2 ports of analyzer are connected, and measurement parameter elects S21 as, open the radio frequency output of vector network analyzer, measure this up
The link Insertion Loss and chain-circuit time delay tested at wave beam different frequent points.
5. a kind of satellite repeater test system calibration method according to claim 3, it is characterised in that：Described step
(4) method of progress back segment down link calibration is in：
(501) Measurement channel is set up, calibration initial frequency is set, frequency and calibration level is terminated；
(502) by PORTA port of the PORT1 ports of vector network analyzer by stub cable between instrument 1 and Electronic Calibration part
It is connected, the PORT2 ports of vector network analyzer is connected by stub cable between instrument 2 with the PORTB ports of Electronic Calibration part,
The radio frequency output of vector network analyzer is opened, the S parameter calibration of vector network analyzer is carried out；
(503) the PORT2 ports of vector network analyzer are connected by stub cable between instrument 1 with B mouthfuls of the arrow net of switch matrix,
By the upper planet connected on switch matrix the another port of test cable pass through stub cable between instrument 2 and vector network analyzer
PORT1 ports be connected, the corresponding switch matrix internal path of the uplink beam is cut through, arrow net measurement parameter elect S21 as, beat
The radio frequency output of vector network analyzer is opened, link Insertion Loss and chain-circuit time delay at the descending test wave beam different frequent points is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710133708.8A CN106990417B (en) | 2017-03-08 | 2017-03-08 | A kind of satellite repeater test macro calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710133708.8A CN106990417B (en) | 2017-03-08 | 2017-03-08 | A kind of satellite repeater test macro calibration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106990417A true CN106990417A (en) | 2017-07-28 |
| CN106990417B CN106990417B (en) | 2019-06-18 |
Family
ID=59411548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710133708.8A Active CN106990417B (en) | 2017-03-08 | 2017-03-08 | A kind of satellite repeater test macro calibration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990417B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884694A (en) * | 2017-11-13 | 2018-04-06 | 中国电子科技集团公司第四十研究所 | A kind of method using vector network analyzer test amplifier gain efficiency |
| CN108020848A (en) * | 2017-12-25 | 2018-05-11 | 湖南卫导信息科技有限公司 | A kind of RDSS navigation signal simulator method for self-calibrating based on frequency conversion |
| CN109150331A (en) * | 2018-06-15 | 2019-01-04 | 上海卫星工程研究所 | A kind of satellite majority biography parallel automatization test system of channel index |
| CN109347539A (en) * | 2018-10-10 | 2019-02-15 | 北京遥感设备研究所 | A kind of absolute time delay high accuracy calibration method of USB TT&C Transponder |
| CN110323571A (en) * | 2019-06-26 | 2019-10-11 | 中国空间技术研究院 | A kind of in-orbit Calibration Method of multi-beam direction suitable for high-throughput satellite |
| CN110557190A (en) * | 2019-08-25 | 2019-12-10 | 中国科学院国家授时中心 | Time delay measuring method for repeater group of on-orbit satellite |
| CN111064534A (en) * | 2019-12-30 | 2020-04-24 | 北京润科通用技术有限公司 | Method and system for detecting relay satellite communication forwarding relation |
| CN111431587A (en) * | 2020-04-26 | 2020-07-17 | 亚太卫星宽带通信（深圳）有限公司 | Communication satellite return link and forward link testing method |
| CN111766425A (en) * | 2020-06-18 | 2020-10-13 | 深圳市极致汇仪科技有限公司 | Vector network analyzer supporting multi-port parallel test |
| CN112532307A (en) * | 2020-11-30 | 2021-03-19 | 中国空间技术研究院 | High-throughput satellite payload in-orbit testing system and method |
| CN113595658A (en) * | 2021-07-26 | 2021-11-02 | 宋宏平 | Greatly simplified calibration method for radio frequency or microwave multi-port expansion equipment |
| CN114389731A (en) * | 2022-01-19 | 2022-04-22 | 中国人民解放军32039部队 | Automatic on-orbit testing system and method for communication satellite |
| CN115642971A (en) * | 2022-12-22 | 2023-01-24 | 成都华兴汇明科技有限公司 | Simulation file generation method and automatic extraction system for microwave module nonlinear parameters |
| CN116436538A (en) * | 2023-06-12 | 2023-07-14 | 西安弘捷电子技术有限公司 | Automatic calibration method and system for multi-channel TR (transmitter-receiver) component test |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879757A (en) * | 2012-10-24 | 2013-01-16 | 北京空间飞行器总体设计部 | Calibration data correction method for test cable in thermal vacuum test |
| CN105897353A (en) * | 2014-12-15 | 2016-08-24 | 中国空间技术研究院 | Integrated test device |
-
2017
- 2017-03-08 CN CN201710133708.8A patent/CN106990417B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879757A (en) * | 2012-10-24 | 2013-01-16 | 北京空间飞行器总体设计部 | Calibration data correction method for test cable in thermal vacuum test |
| CN105897353A (en) * | 2014-12-15 | 2016-08-24 | 中国空间技术研究院 | Integrated test device |
Non-Patent Citations (2)
| Title |
|---|
| 侯卫国 等: "一种新型卫星转发器测试系统设计与应用", 《航天器工程》 * |
| 张中亚: "矢量网络分析仪在通信卫星转发器地面测试中的应用技术", 《中国空间科学技术》 * |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884694A (en) * | 2017-11-13 | 2018-04-06 | 中国电子科技集团公司第四十研究所 | A kind of method using vector network analyzer test amplifier gain efficiency |
| CN107884694B (en) * | 2017-11-13 | 2019-11-22 | 中国电子科技集团公司第四十一研究所 | A method of utilizing vector network analyzer test amplifier gain efficiency |
| CN108020848A (en) * | 2017-12-25 | 2018-05-11 | 湖南卫导信息科技有限公司 | A kind of RDSS navigation signal simulator method for self-calibrating based on frequency conversion |
| CN108020848B (en) * | 2017-12-25 | 2021-11-16 | 湖南卫导信息科技有限公司 | Frequency conversion-based RDSS navigation signal simulator self-calibration method |
| CN109150331A (en) * | 2018-06-15 | 2019-01-04 | 上海卫星工程研究所 | A kind of satellite majority biography parallel automatization test system of channel index |
| CN109347539A (en) * | 2018-10-10 | 2019-02-15 | 北京遥感设备研究所 | A kind of absolute time delay high accuracy calibration method of USB TT&C Transponder |
| CN110323571A (en) * | 2019-06-26 | 2019-10-11 | 中国空间技术研究院 | A kind of in-orbit Calibration Method of multi-beam direction suitable for high-throughput satellite |
| CN110323571B (en) * | 2019-06-26 | 2021-11-16 | 中国空间技术研究院 | Multi-beam pointing in-orbit calibration method suitable for high-throughput satellite |
| CN110557190A (en) * | 2019-08-25 | 2019-12-10 | 中国科学院国家授时中心 | Time delay measuring method for repeater group of on-orbit satellite |
| CN111064534B (en) * | 2019-12-30 | 2021-10-15 | 北京润科通用技术有限公司 | Method and system for detecting relay satellite communication forwarding relation |
| CN111064534A (en) * | 2019-12-30 | 2020-04-24 | 北京润科通用技术有限公司 | Method and system for detecting relay satellite communication forwarding relation |
| CN111431587A (en) * | 2020-04-26 | 2020-07-17 | 亚太卫星宽带通信（深圳）有限公司 | Communication satellite return link and forward link testing method |
| CN111766425A (en) * | 2020-06-18 | 2020-10-13 | 深圳市极致汇仪科技有限公司 | Vector network analyzer supporting multi-port parallel test |
| CN112532307A (en) * | 2020-11-30 | 2021-03-19 | 中国空间技术研究院 | High-throughput satellite payload in-orbit testing system and method |
| CN112532307B (en) * | 2020-11-30 | 2022-07-29 | 中国空间技术研究院 | High-throughput satellite payload in-orbit testing system and method |
| CN113595658A (en) * | 2021-07-26 | 2021-11-02 | 宋宏平 | Greatly simplified calibration method for radio frequency or microwave multi-port expansion equipment |
| CN114389731A (en) * | 2022-01-19 | 2022-04-22 | 中国人民解放军32039部队 | Automatic on-orbit testing system and method for communication satellite |
| CN115642971A (en) * | 2022-12-22 | 2023-01-24 | 成都华兴汇明科技有限公司 | Simulation file generation method and automatic extraction system for microwave module nonlinear parameters |
| CN115642971B (en) * | 2022-12-22 | 2023-05-09 | 成都华兴汇明科技有限公司 | Simulation file generation method and automatic extraction system for nonlinear parameters of microwave module |
| CN116436538A (en) * | 2023-06-12 | 2023-07-14 | 西安弘捷电子技术有限公司 | Automatic calibration method and system for multi-channel TR (transmitter-receiver) component test |
| CN116436538B (en) * | 2023-06-12 | 2023-11-21 | 西安弘捷电子技术有限公司 | Automatic calibration method and system for multi-channel TR (transmitter-receiver) component test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106990417B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106990417B (en) | A kind of satellite repeater test macro calibration method | |
| CN106911404B (en) | Method for testing transponder channel frequency response based on vector network analyzer | |
| CN106027170B (en) | The digital miniaturization radio equipment automatic testing equipment of one kind and system | |
| CN106656306B (en) | A kind of transponder third order intermodulation test method based on vector network analyzer | |
| US6249128B1 (en) | Automated microwave test system with improved accuracy | |
| CN101437317B (en) | Wireless radio frequency index verification apparatus and method for multi-mode mobile communication terminal | |
| WO2000046612A1 (en) | Multi-port device analysis apparatus and method and calibration method thereof | |
| CN103138845B (en) | Amplitude phase characteristic test method for down-conversion reception channel of ultra-wide band synthetic aperture radar (SAR) receiver | |
| US9967041B1 (en) | Multi-antenna noise power measuring method and apparatus | |
| CN108614247A (en) | A kind of secondary radar channel calibration method | |
| GB2329478A (en) | Automatic calibration of a network analyzer | |
| CN106412953B (en) | Multiple probe technique test macro and its calibration method and device | |
| CN110311739A (en) | Calibration test system, method, apparatus and the storage medium of multichannel RRU | |
| CN101009523B (en) | A device and method for automatic measurement of the mobile communication terminal demodulation performance | |
| CN102480330A (en) | Testing method and equipment for intelligent antenna broadcast forming of base station | |
| CN102299749A (en) | Multi-channel testing device and method for RRUs (remote radio units) | |
| CN109120288A (en) | Radio frequency adaptive interference cancellation device and its adjustment method | |
| CN105703849A (en) | Radio frequency switching box and system for testing radio frequency consistency of terminals | |
| CN113447956A (en) | Satellite navigation satellite-ground integrated automatic time delay calibration method | |
| US6347382B1 (en) | Multi-port device analysis apparatus and method | |
| US6965241B1 (en) | Automated electronic calibration apparatus | |
| CN108900261A (en) | A kind of 1800M RF consistency reception intermodulation testing method and device | |
| CN114050878A (en) | Method and device for automatically testing stray suppression of multi-channel radio frequency system | |
| US20230408617A1 (en) | Calibration unit, calibration system and calibration method for a vector network analyzer | |
| CN112485739B (en) | Method for realizing rapid power calibration processing aiming at multi-port vector network analyzer |
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 |