CN109782209A - Pulse power calibration factor calibration method - Google Patents
Pulse power calibration factor calibration method Download PDFInfo
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- CN109782209A CN109782209A CN201910181739.XA CN201910181739A CN109782209A CN 109782209 A CN109782209 A CN 109782209A CN 201910181739 A CN201910181739 A CN 201910181739A CN 109782209 A CN109782209 A CN 109782209A
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Abstract
The present invention provides a kind of pulse power calibration factor calibration methods, the present invention samples comparison method using envelope, before pulsed power signal ingoing power sensor, first pass through signal fixed ampllitude loop, by the adjustable continuous wave signal of amplitude of pulse modulated microwave signal and an auxiliary, by the way that high speed RF switch is separately sampled and detection, completion is compared by amplitude.Continuous wave power can accurately be measured with standard small-power meter, and the path attenuation of two paths can be calibrated with continuous wave, then pulse peak power determines that.The calibration factor of pulse power sensor can both be calibrated under pulse power state in this way.
Description
Technical field
The present invention relates to a kind of pulse power calibration factor calibration methods.
Background technique
In radio parameter, power is a very important parameter.According to existing pulse power meter vertification regulation,
The method of calibration pulse power sensor calibration factor is mainly to carry out under continuous wave state at present, and this method only reflects
Actual performance of the pulse power sensor under continuous wave state.And actually after continuous wave signal carries out impulse modulation,
The power of reality output be it is changed, simultaneously because the impedance mismatch of signal source and pulse power sensor, this is just made
At the inaccuracy when being calibrated to pulse power sensor.
Summary of the invention
The purpose of the present invention is to provide a kind of pulse power calibration factor calibration methods.
To solve the above problems, the present invention provides a kind of pulse power calibration factor calibration method, comprising:
Step 1, before pulsed power signal ingoing power sensor, signal fixed ampllitude loop is first passed through, is taken using envelope
Sample comparison method carries out quickly real-time detection to pulsed power signal using peak detector, and keeps electricity by a high-speed sampling
Road sampling generates wideband video signal, which is compared with the DC voltage that precision voltage source exports, is matched
Pulse fixed ampllitude loop is closed, the pulse-modulated signal after the fixed ampllitude for exporting system is identical as the output amplitude of continuous wave signal, from
And obtain the equivalent pulse power signal source of the low reflection coefficient an of amplitude stabilization.
Further, in the above-mentioned methods, step 1, comprising:
Step 11, microwave signal source work is in continuous wave mode first, and continuous wave signal is by pulse power controlling of amplitude
Device is compared using the amplitude of sampling with the reference level amplitude of precision voltage source, controls microwave signal source with comparison signal
Amplitude, while on oscillograph monitor continuous wave signal envelope waveform, at this time record continuous wave power standard indicated horsepower
PbsWith the voltage value V of precision voltage sourcec, wherein PbsAnd VcRelationship such as formula (1) shown in,
Wherein, M1=| 1- ΓGeΓs|2,
In formula: k1-- frequency response coefficient；A1-- the continuous wave fixed ampllitude correction factor of system；Pbs-- continuous wave power standard
Indicated horsepower；Ks-- the calibration factor of continuous wave reference power meter；M1-- ionic size mismatch；ΓGe-- the reflection of dummy source
Coefficient；Γs-- the reflection coefficient of continuous wave reference power meter.
Further, in the above-mentioned methods, after step 11, further includes:
Step 12, in impulse modulation mode, modulated signal has pulse signal generator offer, pulse for microwave signal source work
Modulated signal also passes through power splitter and peak detector, and the pulse envelope signal of output is sent to pulse power controlling of amplitude
Device samples the voltage value V of amplitude and precision voltage sourcecIt is compared, controls microwave signal amplitude, at this time pulse with comparison signal
Peak amplitude is identical as continuous wave signal amplitude, while the watchdog pulse signal waveform on oscillograph, by school pulse power meter
In obtain max power level PbuTo get to by the pulse power calibration factor K of school pulse power sensoru；
The calibration of pulse power calibration factor, calibration factor K are carried out to by school pulse power sensoruExpression formula are as follows:
Wherein, M2=| 1- ΓGeΓu|2,
In formula: k0-- impulse waveform correction factor；k2-- frequency response coefficient；A2-- the pulse fixed ampllitude correction factor of system；
Pbu-- max power level is obtained in the pulse power meter of school；M2-- ionic size mismatch；Γu-- by the reflection system of school pulse power meter
Number；
Due to ionic size mismatch M1And M2In ΓGe、Γs、ΓuPhase be difficult to determine, therefore by M1、M2It is approximately 1, therefore
Formula (1), formula (2) are reduced to formula (3), formula (4):
Since system is in continuous wave calibration and pulse mode calibration process, using identical fixed ampllitude loop, therefore system
Continuous wave fixed ampllitude correction factor it is identical as pulse mode fixed ampllitude correction factor, i.e. A1=A2, while frequency response coefficient k1=
k2, therefore formula (5) are derived by formula (3), formula (4):
Calibration factor by school pulse power sensor under pulse mode is obtained by formula (5).
Compared with prior art, the present invention passes through
Detailed description of the invention
Fig. 1 is each point waveform diagram in the envelope sampling comparison method of one embodiment of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figure 1, the present invention provides a kind of pulse power calibration factor calibration method, comprising:
Before pulsed power signal ingoing power sensor, signal fixed ampllitude loop is first passed through, is compared using envelope sampling
Method carries out quickly real-time detection to pulsed power signal using peak detector, and is sampled by a high-speed sampling holding circuit
Wideband video signal is generated, which is compared with the DC voltage that precision voltage source exports, cooperates pulse
Fixed ampllitude loop, the pulse-modulated signal after making the fixed ampllitude of system output is identical as the output amplitude of continuous wave signal, to obtain
The equivalent pulse power signal source of the low reflection coefficient of one amplitude stabilization, so both can be under pulse power state to pulse function
Rate sensor is calibrated.
Here, the present invention is first passed through before pulsed power signal ingoing power sensor using envelope sampling comparison method
The adjustable continuous wave signal of amplitude of pulse modulated microwave signal and an auxiliary is passed through high rapid fire by signal fixed ampllitude loop
Frequency switchs separately sampled and detection, compares completion by amplitude.Continuous wave power can accurately be measured with standard small-power meter, and two
The path attenuation of a access can be calibrated with continuous wave, then pulse peak power determines that.It so both can be in pulse power
The calibration factor of pulse power sensor is calibrated under state.
For the clearer principle for illustrating envelope sampling method, the amount of the calibration process of continuous wave and pulse power is transmitted through
Journey is placed in the same figure and is illustrated, as shown in Figure 1.In Fig. 1 top half be when passing through continuous wave power in system, by
The continuous wave power standard on right side determines the output voltage of precision voltage source；Lower half portion is to pass through pulse power in system
When, current pulse peak power is determined by precision voltage source output voltage.Fig. 1 shows continuous wave signal and impulse modulation
The waveform diagram in signal each stage in fixed ampllitude loop.
1) continuous wave is calibrated
Microwave signal source work passes through pulse power controlling of amplitude device in continuous wave mode, continuous wave signal first, utilizes
The amplitude of sampling is compared with the reference level amplitude of precision voltage source, and the amplitude of microwave signal source is controlled with comparison signal,
Continuous wave signal envelope waveform can be monitored on oscillograph simultaneously, record the indicated horsepower P of continuous wave power standard at this timebsAnd essence
The voltage value V of cipher telegram potential sourcec, wherein PbsAnd VcRelationship such as formula (1) shown in.
Wherein, M1=| 1- ΓGeΓs|2
In formula: k1-- frequency response coefficient；A1-- the continuous wave fixed ampllitude correction factor of system；Pbs-- continuous wave power standard
Indicated horsepower；Ks-- the calibration factor of continuous wave reference power meter；M1-- ionic size mismatch；ΓGe-- the reflection of dummy source
Coefficient；Γs-- the reflection coefficient of continuous wave reference power meter.
2) calibration process
Microwave signal source works in impulse modulation mode, and modulated signal has pulse signal generator offer, impulse modulation letter
Number power splitter and peak detector are also passed through, the pulse envelope signal of output is sent to pulse power controlling of amplitude device, sampled
The voltage value V of amplitude and precision voltage sourcecIt is compared, controls microwave signal amplitude with comparison signal, at this time peak value of pulse width
Spend it is identical with continuous wave signal amplitude, while can on oscillograph watchdog pulse signal waveform, in by school pulse power meter must
To max power level Pbu, can be obtained by the pulse power calibration factor K of school pulse power sensoru。
The calibration of pulse power calibration factor, calibration factor K are carried out to by school pulse power sensor using this methodu's
Expression formula are as follows:
Wherein, M2=| 1- ΓGeΓu|2
In formula: k0-- impulse waveform correction factor；k2-- frequency response coefficient；A2-- the pulse fixed ampllitude correction factor of system；
Pbu-- max power level is obtained in the pulse power meter of school；M2-- ionic size mismatch；Γu-- by the reflection system of school pulse power meter
Number.
In actual test, due to ionic size mismatch M1And M2In ΓGe、Γs、ΓuPhase be difficult to determine, therefore will
M1、M2It is approximately 1, therefore formula (1), formula (2) can simplify as formula (3), formula (4):
Since system is in continuous wave calibration and pulse mode calibration process, using identical fixed ampllitude loop, therefore system
Continuous wave fixed ampllitude correction factor it is identical as pulse mode fixed ampllitude correction factor, i.e. A1=A2, while frequency response coefficient k1=
k2, therefore formula (5) can be derived by formula (3), formula (4):
Calibration factor by school pulse power sensor under pulse mode can be obtained by formula (5).
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit of the invention to invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the invention is also intended to include including these modification and variations.
Claims (3)
1. a kind of pulse power calibration factor calibration method characterized by comprising
Step 1, before pulsed power signal ingoing power sensor, signal fixed ampllitude loop is first passed through, using envelope sampling rate
Compared with method, quickly real-time detection is carried out to pulsed power signal using peak detector, and adopted by a high-speed sampling holding circuit
Sample generates wideband video signal, which is compared with the DC voltage that precision voltage source exports, and cooperates arteries and veins
Fixed ampllitude loop is rushed, the pulse-modulated signal after the fixed ampllitude for exporting system is identical as the output amplitude of continuous wave signal, thus
To the equivalent pulse power signal source of the low reflection coefficient of an amplitude stabilization.
2. pulse power calibration factor calibration method as described in claim 1, which is characterized in that step 1, comprising:
Step 11, in continuous wave mode, continuous wave signal passes through pulse power controlling of amplitude device, benefit for microwave signal source work first
It is compared with the amplitude of sampling with the reference level amplitude of precision voltage source, with the width of comparison signal control microwave signal source
Degree, while continuous wave signal envelope waveform is monitored on oscillograph, the indicated horsepower P of continuous wave power standard is recorded at this timebsWith
The voltage value V of precision voltage sourcec, wherein PbsAnd VcRelationship such as formula (1) shown in,
Wherein, M1=| 1- ΓGeΓs|2,
In formula: k1-- frequency response coefficient；A1-- the continuous wave fixed ampllitude correction factor of system；Pbs-- the finger of continuous wave power standard
Show power；Ks-- the calibration factor of continuous wave reference power meter；M1-- ionic size mismatch；ΓGe-- the reflection coefficient of dummy source；
Γs-- the reflection coefficient of continuous wave reference power meter.
3. pulse power calibration factor calibration method as claimed in claim 2, which is characterized in that after step 11, further includes:
Step 12, in impulse modulation mode, modulated signal has pulse signal generator offer, impulse modulation for microwave signal source work
Signal also passes through power splitter and peak detector, and the pulse envelope signal of output is sent to pulse power controlling of amplitude device, is taken
The voltage value V of sample amplitude and precision voltage sourcecIt is compared, controls microwave signal amplitude with comparison signal, at this time peak value of pulse
Amplitude is identical as continuous wave signal amplitude, while the watchdog pulse signal waveform on oscillograph, in by school pulse power meter
To max power level PbuTo get to by the pulse power calibration factor K of school pulse power sensoru；
The calibration of pulse power calibration factor, calibration factor K are carried out to by school pulse power sensoruExpression formula are as follows:
Wherein, M2=| 1- ΓGeΓu|2,
In formula: k0-- impulse waveform correction factor；k2-- frequency response coefficient；A2-- the pulse fixed ampllitude correction factor of system；Pbu--
Max power level is obtained in the pulse power meter of school；M2-- ionic size mismatch；Γu-- by the reflection coefficient of school pulse power meter；
Due to ionic size mismatch M1And M2In ΓGe、Γs、ΓuPhase be difficult to determine, therefore by M1、M2It is approximately 1, therefore formula
(1), formula (2) is reduced to formula (3), formula (4):
Since system is in continuous wave calibration and pulse mode calibration process, using identical fixed ampllitude loop, therefore the company of system
Continuous wave fixed ampllitude correction factor is identical as pulse mode fixed ampllitude correction factor, i.e. A1=A2, while frequency response coefficient k1=k2, because
This derives formula (5) by formula (3), formula (4):
Calibration factor by school pulse power sensor under pulse mode is obtained by formula (5).
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| CN111289951A (en) * | 2020-03-06 | 2020-06-16 | 南京长峰航天电子科技有限公司 | Wide pulse equivalent simulation method and device based on least square |
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Application publication date: 20190521 |