CN109917345A - Monopulse radar directional sensitivity scaling method and device - Google Patents
Monopulse radar directional sensitivity scaling method and device Download PDFInfo
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Abstract
The invention discloses monopulse radar directional sensitivity scaling method and devices, are related to radar calibration field.This method comprises: detecting by monopulse radar to calibration source, the antenna of monopulse radar is made successively to turn over preset n sampled point；Calculate the aerial angle S of each sampled point acquisitioni；Calculate actual angle error SEi, obtain the detection angle error RE of monopulse radari；According to the actual angle error SE at whole sampled pointsiWith detection angle error REiObtain the directional sensitivity of monopulse radar.Monopulse radar directional sensitivity scaling method and device provided by the invention, sampling precision is higher, and actual measurement angle error when to the symmetry and true angle error for investigating radar directional sensitivity close to 0 helps maximum, if servo-system speed index occurs undesirable, when causing sampling precision inadequate, also ensure that calibration task smoothly completes.
Description
Technical field
The present invention relates to radar calibration field more particularly to monopulse radar directional sensitivity scaling methods and device.
Background technique
The directional sensitivity of monopulse radar is divided into azimuthal orientation sensitivity and pitching directional sensitivity, the two orientation spirits
Sensitivity needs to determine respectively.
The method of existing calibration monopulse radar directional sensitivity is: by taking azimuthal orientation sensitivity as an example, pulse thunder
Up to the fixation calibration source target of one known location of tracking, the orientation in calibration source is CenterA, pitching CenterE, keeps day
CenterE is directed toward in the pitching of line, by the orientation of antenna from the-θ of CenterAADirection turns to θADirection, wherein θAIt is pulse
Radar bearing half beam width, in [CenterA- θA, CenterA+ θA] in the range of n sampled point is averagely set, work as pulse
When the orientation of radar antenna reaches predetermined sampled point, target true bearing angle error is recorded and azimuth that monopulse radar measures
Error.After recording n sample point data, using target true bearing angle error sequence as X-axis, azimuth that monopulse radar measures
Error sequence is Y-axis, and available monopulse radar azimuthal orientation sensitivity curve intends orientation directional sensitivity curve
It closes, the slope of obtained straight line is the azimuthal orientation sensitivity of the monopulse radar.
Similarly, the bearing sense CenterA for keeping antenna, rotates the pitching of monopulse radar, repeats the above process, i.e.,
The pitching directional sensitivity of monopulse radar can be obtained.
However existing scaling method has very big problem.Since the servo-system of control monopulse radar scanner rotation is
Feedback control system, when antenna successively turns over n sampled point from initial position according to predetermined speed, when turning to final position,
The characteristics of its practical movement velocity is that starting is slow, is gradually accelerated, and can be greater than predetermined speed, then slowly tend to predetermined speed, finally
Speed is slowed down gradually again until being parked in final position, it is seen then that the sampling precision of radar system is in addition to by angular encoder precision
Limitation, is also influenced by servo-system speed transient response index and velocity accuracy, existing scaling method is caused to demarcate
The aerial angle that process obtains generally can not be ensured of immediate with predetermined sampled point.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of monopulse radar orientation spirit
Sensitivity scaling method and a kind of monopulse radar directional sensitivity caliberating device.
The technical scheme to solve the above technical problems is that
A kind of monopulse radar directional sensitivity scaling method, comprising:
Calibration source is detected by monopulse radar, the antenna of the monopulse radar is made successively to turn over preset n
A sampled point acquires m aerial angle of the antenna, n >=3, m >=3, i=1,2 ..., n in ith sample point；
The difference for calculating separately the angle of each aerial angle and the ith sample point, by the absolute value of the difference
The smallest aerial angle is as the collected aerial angle S of ith sample pointi；
According to the aerial angle Si, calculate actual angle error SE of the antenna at the ith sample pointi, and
It calculates and is acquiring the aerial angle SiWhen, search angle that the monopulse radar detects at the ith sample point
Spend error REi；
According to the actual angle error SE at whole sampled pointsiWith the detection angle error REiObtain the simple venation
Rush the directional sensitivity of radar.
The beneficial effects of the present invention are: monopulse radar directional sensitivity scaling method provided by the invention, by every
A sampled point carries out multiple repairing weld, then determines suitable antenna angle according to the difference of the angle of each aerial angle and sampled point
Degree, the aerial angle that can guarantee be with the predetermined immediate aerial angle of sampled point angle, have sampling precision it is higher
The advantages of, and actual measurement angle error when to the symmetry and true angle error for investigating radar directional sensitivity close to 0 helps most
Greatly, if the appearance of servo-system speed index is undesirable, when causing sampling precision inadequate, also ensure that calibration task is smooth
It completes.
The another technical solution that the present invention solves above-mentioned technical problem is as follows:
A kind of monopulse radar directional sensitivity caliberating device, comprising:
Memory, for storing computer program；
Processor realizes monopulse radar orientation as described in the above technical scheme for executing the computer program
Sensitivity Calibration method.
The beneficial effects of the present invention are: monopulse radar directional sensitivity caliberating device provided by the invention, passes through processing
Device carries out multiple repairing weld in each sampled point, and it is suitable then to be determined according to the difference of the angle of each aerial angle and sampled point
Aerial angle, the aerial angle that can guarantee be with the predetermined immediate aerial angle of sampled point angle, have sampling essence
Spend higher advantage, and actual measurement angle error when to the symmetry and true angle error for investigating radar directional sensitivity close to 0
Maximum is helped, if the appearance of servo-system speed index is undesirable, when causing sampling precision inadequate, also ensures that calibration is appointed
Business smoothly completes.
The advantages of additional aspect of the invention, will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or practice is recognized through the invention.
Detailed description of the invention
Fig. 1 is the flow diagram that the embodiment of monopulse radar directional sensitivity scaling method of the present invention provides；
Fig. 2 is the structural framing figure that the embodiment of monopulse radar directional sensitivity caliberating device of the present invention provides.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and illustrated embodiment is served only for explaining the present invention,
It is not intended to limit the scope of the present invention.
The directional sensitivity of monopulse radar is divided into azimuthal orientation sensitivity and pitching directional sensitivity, the two orientation spirits
Sensitivity needs to demarcate respectively.For the present invention, aerial angle includes azimuth and pitch angle, when needing to demarcate azimuthal orientation
When sensitivity, the pitching of antenna can be directed toward to the pitching in calibration source, keep pitching constant, then the orientation of rotary antenna, led to
It crosses method provided by the invention to be sampled, obtains azimuthal orientation sensitivity.
Similarly, when needing to demarcate pitching directional sensitivity, the orientation in the bearing sense calibration source of antenna can be kept
Unchanged direction, the then pitching of rotary antenna, the method provided through the invention are sampled, and pitching directional sensitivity is obtained.
Therefore, the aerial angle in the application, actual angle error, detection angle error etc., refer to azimuth, reality
Azimuth angle error, directional bearing angle error or pitch angle, practical pitching angle error, detection pitching angle error, when calibration side
When the directional sensitivity of position, keeps the pitching of monopulse radar scanner to be directed toward the pitching in calibration source, keep pitching constant, rotary antenna
Orientation；When demarcating pitching directional sensitivity, the orientation in the bearing sense calibration source of monopulse radar scanner is kept, is protected
Unchanged direction is held, the pitching of rotary antenna is subsequent no longer to illustrate one by one.
As shown in Figure 1, the process that provides of embodiment for monopulse radar directional sensitivity scaling method of the present invention is illustrated
Figure, this method comprises:
S1 detects calibration source by monopulse radar, and the antenna of monopulse radar is made successively to turn over preset n
Sampled point, in m aerial angle of ith sample point acquisition antenna, n >=3, m >=3, i=1,2 ..., n.
It should be noted that calibration source is fixed calibration source, azimuth and pitch angle are known.The quantity n of sampled point
It can be arranged according to actual needs, it is preferable that the quantity n of sampled point is odd number.M sampling is carried out at each sampled point, often
Secondary sampling obtains an aerial angle.It should be understood that in order to guarantee sampling precision, m sampled point, which should cover antenna and turn over this, to be adopted
Before sampling point and antenna turns over the sampled data after the sampled point, can obtain antenna by reading servo-system angular encoder
Angle.
It should be understood that angle step, the control amount of the movement velocity of antenna etc. between arbitrary neighborhood sampled point can roots
It is preset according to actual demand.
It should be understood that antenna turns over sampled point, then ith sample point sampling when the m times sampling of ith sample point
Terminate, carries out m sampling altogether.
S2 calculates separately the difference of the angle of each aerial angle and ith sample point, and the absolute value of difference is the smallest
Aerial angle is as the collected aerial angle S of ith sample pointi。
It should be noted that aerial angle be obtained in each sampling point sampling, then can only by aerial angle with
It is poor that the angle of corresponding sampled point make, and obtains difference.
For example, it is assumed that sharing 3 sampled points, respectively F1、F2、F3, 3 secondary antenna angles are acquired in each sampled point, then
In sampled point F1, collected 3 aerial angles are respectively S11、S12、S13；In sampled point F2, collected 3 aerial angles point
It Wei not S21、S22、S23；In sampled point F3, collected 3 aerial angles are respectively S31、S32、S33。
So for sampled point F1For, S can be used respectively11、S12、S13With F1Make it is poor, obtain 3 differences, it is assumed that through than
Compared with S12With F1Difference absolute value it is minimum, i.e. aerial angle S12With actual sampled point angle F1It is closest, then can incite somebody to action
S12As in sampled point F1Collected aerial angle S1.The aerial angle of other sampled points determines that method is same as above, and repeats no more.
S3, according to aerial angle Si, calculate actual angle error SE of the antenna at ith sample pointi, and calculate and adopting
Collect aerial angle SiWhen, detection angle error RE that monopulse radar detects at ith sample pointi。
It should be noted that actual angle error SEiAerial angle S can be passed throughiMake poor obtain with the actual angle in calibration source
It arrives, detection angle error REiIt is that monopulse radar detects to obtain.
It should be understood that in acquisition aerial angle SiWhen, the acquisition moment is Tij, in TijMoment, the angle that monopulse radar detects
Spending error is exactly detection angle error REi。
For example, it is assumed that i=3, i.e., at third sampled point, the 2nd aerial angle S of acquisition32For the angle with sampled point
Immediate aerial angle is spent, aerial angle S is acquired32The acquisition moment be T32, then, monopulse radar is sampled in third
The detection angle error RE detected at point3It is exactly monopulse radar in T32The detection angle error that moment is detected.
S4, according to the actual angle error SE at whole sampled pointsiWith detection angle error REiObtain monopulse radar
Directional sensitivity.
For example, can be by the actual angle error SE at whole sampled pointsiWith detection angle error REiFitting is in line, really
Determine the slope of fitting a straight line, as directional sensitivity.
Monopulse radar directional sensitivity scaling method provided in this embodiment, by repeatedly being adopted in each sampled point
Then sample determines suitable aerial angle according to the difference of the angle of each aerial angle and sampled point, can guarantee
Aerial angle be with the predetermined immediate aerial angle of sampled point angle, have the advantages that sampling precision is higher, and to investigation
Actual measurement angle error when the symmetry of radar directional sensitivity and true angle error are close to 0 help it is maximum, if servo-system is fast
It is undesirable to spend index appearance, when causing sampling precision inadequate, also ensures that calibration task smoothly completes.
It optionally, in some embodiments, can calculating difference according to the following formula:
ξij=MinSpan (Fi-Sij)
Wherein, FiFor the angle of ith sample point, SijFor in the aerial angle of ith sample point jth time acquisition, j=1,
2 ..., m, ξijFor difference, MinSpan indicates for angle value to be converted to (- 180,180) degree range, or is converted to (- π, π) range.
Optionally, in some embodiments, it is acquired the smallest aerial angle of the absolute value of difference as ith sample point
The aerial angle S arrivedi, may include:
Work as ξij≤ 0, ξij-1> 0, and-ξij< ξij-1When, it is determined that the aerial angle S of jth time acquisitionijWith ith sample
The absolute value of the difference of the angle of point is minimum, by the aerial angle S of jth time acquisitionijAs the collected antenna of ith sample point
Angle Si；
Work as ξij≤ 0, ξij-1> 0, and-ξij≥ξij-1When, it is determined that the aerial angle S of jth -1 time acquisitionij-1With i-th
The absolute value of the difference of the angle of sampled point is minimum, the aerial angle S that jth -1 time is acquiredij-1It is acquired as ith sample point
The aerial angle S arrivedi。
It should be understood that working as ξij≤ 0 and ξij-1When > 0, when illustrating the jth time sampling of ith sample point, antenna has just turned over the
I sampled point, at this point, if-ξij< ξij-1, then illustrate that is, antenna does not turn over i-th also compared to adjacent last time sampling
Jth -1 time sampling of sampled point, when antenna has just turned over the jth time sampling of ith sample point, aerial angle SijFrom predetermined sampling
Point FiIt is closer, then by the aerial angle S of jth time acquisitionijAs the collected aerial angle S of ith sample pointi。
Similarly, if-ξij≥ξij-1, then explanation has just turned over the jth time sampling of ith sample point compared to antenna,
Adjacent last sampling, i.e., when antenna does not turn over -1 sampling of jth of ith sample point also, aerial angle Sij-1From predetermined
Sampled point FiAerial angle S that is closer, then acquiring jth -1 timeij-1As the collected aerial angle S of ith sample pointi。
By the above method, multiple repairing weld is carried out at each sampled point and picks out and adopts then by above-mentioned deterministic process
During sample with the immediate aerial angle of predetermined sampled point, can effectively avoid because antenna velocity of rotation it is uneven caused by adopt
The problem of sample precision reduces.
Optionally, in some embodiments, actual angle error SE can be calculated according to the following formulai:
SEi=MinSpan (C-Si)
Wherein, C is the actual angle in calibration source, and MinSpan indicates for angle value to be converted to (- 180,180) degree range, or
It is converted to (- π, π) range.
Optionally, in some embodiments, the quantity n of sampled point can be determined according to the following formula:
Wherein, ε is radar sampling precision preset value, θAIt is the orientation half beam width of monopulse radar, θEIt is pulse thunder
The pitching half beam width reached.
Sampled point quantity is determined by the above method, and obtained sampled point quantity can be the case where meeting sample requirement
Under, operation times are reduced, the calibration efficiency of directional sensitivity is improved.
Optionally, in some embodiments, the angle between any two neighbouring sample point can be determined according to the following formula
Spend step-length:
Or,
Wherein, θAIt is the orientation half beam width of monopulse radar, θEIt is the pitching half beam width of monopulse radar,
Step is angle step.
It should be understood that determining that any two are adjacent when demarcating the azimuthal orientation sensitivity of radar using first formula and adopting
Angle step between sampling point determines any two phase using second formula when demarcating the pitching directional sensitivity of radar
Angle step between adjacent sampled point.
Optionally, in some embodiments, the angle of ith sample point can be determined according to the following formula:
Fi=C+Step × (i-1)-θA
Or,
Fi=C+Step × (i-1)-θE
Wherein, C is the actual angle in calibration source, FiFor the angle of ith sample point, i=1,2 ..., n.
It should be understood that determining the angle of ith sample point using first formula when demarcating the azimuthal orientation sensitivity of radar
Degree determines the angle of ith sample point using second formula when demarcating the pitching directional sensitivity of radar.
Preferably, when demarcating the azimuthal orientation sensitivity of radar, the aerial angle of monopulse radar is moved to C- θA-
Step, the initial position as antenna；When demarcating the pitching directional sensitivity of radar, the aerial angle of monopulse radar is moved
Move C- θE- Step, the initial position as antenna.
Preferably, when demarcating the azimuthal orientation sensitivity of radar, the aerial angle of monopulse radar is moved to C+ θA+
Step, the final position as antenna；When demarcating the pitching directional sensitivity of radar, the aerial angle of monopulse radar is moved
Move C+ θE+ Step, the final position as antenna.
It should be understood that by taking the azimuthal orientation sensitivity for demarcating radar as an example, in the angle for calculating sampled point using above method
When, first sampled point F1Angle be C- θA, then by being arranged the initial position of antenna in C- θA- Step, i.e., by antenna
Move forward Step at first sampled point, can reduce antenna on startup because speed it is unstable caused by speed is uneven asks
Topic, can make antenna when reaching real sampling interval, speed can be close to predetermined speed, similarly, by the terminal position of antenna
It sets and moves backward Step, also in that movement velocity can slow down when antenna reaches final position fastly, by by the terminal of antenna
Position moves backward Step, can avoid the deceleration interval of antenna.
Simultaneously, additionally it is possible to make when judging, to be able to carry out phase at first sampled point and the last one sampled point
Same judgement, convenient for calculating.By taking initial position as an example, such as without Forward, moved since first sampled point, then will
Lack the data sampled before first sampled point, the data for causing first sampled point to acquire are not accurate enough.
Optionally, in some embodiments, the control amount of the movement speed of antenna can be determined according to the following formula:
Wherein, t is the time interval of sampling, and V is the control amount of the movement speed of antenna, and σ % is servo-system speed mistake
Difference band range, ε are radar sampling precision preset values.
It should be understood that the control amount of the movement speed of antenna is exactly predetermined speed.
The control amount for setting the movement speed of antenna through the above way, can guarantee that aerial angle is adopted at adjacent two
It is at least sampled between sampling point 2 times, improves the precision of sampling.
Optionally, in some embodiments, according to the actual angle error SE at whole sampled pointsiWith detection angle error
REiThe directional sensitivity of monopulse radar is obtained, may include:
With the actual angle error SE at whole sampled pointsiFor X-axis, with the detection angle error RE at whole sampled pointsiFor
Y-axis obtains the directional sensitivity curve of monopulse radar；
Directional sensitivity curve is fitted, the directional sensitivity slope of a curve after digital simulation, obtains orientation spirit
Sensitivity.
Preferably, when demarcating the azimuthal orientation sensitivity of radar, directional sensitivity center of curve can be taken to protect precision model
Interior data are enclosed, for example, can beData in range, i.e.,Data in range, energy
Access more accurate directional sensitivity.
When demarcating the pitching directional sensitivity of radar, directional sensitivity center of curve can be taken to protect the number in accuracy rating
According to for example, can beData in range, i.e.,Data in range can obtain
More accurate directional sensitivity.
It is illustrated below with one section of sampled data example.
Assuming that V=0.625, C=0, Step=0.06, ε=0.003, in down-sampled data, first is classified as sampled point volume
Number, second is classified as the actual motion speed of antenna, and third is classified as aerial angle, and the 4th is classified as antenna in the jth of ith sample point
Actual angle error corresponding with the immediate point of ith sample point when secondary sampling.
50,0.625522, -0.062072,0.062072
50,0.625521, -0.057068,0.062072
51,0.625521, -0.052064,0.052064
51,0.625521, -0.047059,0.047059
51,0.625521, -0.042055,0.042055
51,0.625520, -0.037051,0.037051
51,0.625520, -0.032047,0.032047
51,0.625519, -0.027043,0.027043
51,0.625519, -0.022039,0.022039
51,0.625519, -0.017034,0.017034
51,0.625519, -0.012030,0.012030
51,0.625518, -0.007026,0.007026
51,0.625518, -0.002022,0.002022
51,0.625518,0.002982,0.002022
52,0.625518,0.007986, -0.007986
As can be seen that immediate with predetermined point 0 is -0.052064, then in the 1st sampling of the 51st sampled point
The actual angle error of output is 0.052064.
In the 2nd sampling of the 51st sampled point, immediate with predetermined point 0 is -0.047059, then the reality exported
Angular error is 0.047059.
……
In the 11st sampling of the 51st sampled point, antenna does not turn over predetermined point 0, this angle being closest to,
When 12 samplings, antenna just turns over 0, but the angle not being closest to, and therefore, exports final actual angle error SE51For
0.002022。
It is appreciated that in some embodiments, may include such as implementation optional some or all of in the various embodiments described above
Mode.
As shown in Fig. 2, in other embodiments of the invention, also providing a kind of monopulse radar directional sensitivity calibration dress
It sets, comprising:
Memory 1, for storing computer program；
Processor 2 realizes the monopulse radar directional sensitivity such as above-mentioned any embodiment for executing computer program
Scaling method.
Monopulse radar directional sensitivity caliberating device provided in this embodiment is carried out by processor in each sampled point
Then multiple repairing weld determines suitable aerial angle according to the difference of the angle of each aerial angle and sampled point, can guarantee
Obtained aerial angle be with the predetermined immediate aerial angle of sampled point angle, have the advantages that sampling precision is higher, and
Actual measurement angle error when to the symmetry and true angle error for investigating radar directional sensitivity close to 0 help it is maximum, if servo
The appearance of system speed index is undesirable, when causing sampling precision inadequate, also ensures that calibration task smoothly completes.
It should be noted that the present embodiment is product embodiments corresponding with above-mentioned each method embodiment, for this implementation
In example the explanation of each optional embodiment can with reference in above-mentioned each method embodiment pair it should be noted that details are not described herein.
Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments "
The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of monopulse radar directional sensitivity scaling method characterized by comprising
Calibration source is detected by monopulse radar, so that the antenna of the monopulse radar is successively turned over preset n and adopts
Sampling point acquires m aerial angle of the antenna, n >=3, m >=3, i=1,2 ..., n in ith sample point；
The difference for calculating separately the angle of each aerial angle and the ith sample point, the absolute value of the difference is minimum
Aerial angle as the collected aerial angle S of ith sample pointi；
According to the aerial angle Si, calculate actual angle error SE of the antenna at the ith sample pointi, and calculate
Acquiring the aerial angle SiWhen, the detection angle that the monopulse radar detects at the ith sample point misses
Poor REi；
According to the actual angle error SE at whole sampled pointsiWith the detection angle error REiObtain the pulse thunder
The directional sensitivity reached.
2. monopulse radar directional sensitivity scaling method according to claim 1, which is characterized in that according to the following formula
Calculate the difference:
ξij=MinSpan (Fi-Sij)
Wherein, FiFor the angle of ith sample point, SijFor in the aerial angle of ith sample point jth time acquisition, j=1,
2 ..., m, ξijFor difference, MinSpan indicates for angle value to be converted to (- 180,180) degree range, or is converted to (- π, π) range.
3. monopulse radar directional sensitivity scaling method according to claim 2, which is characterized in that by the difference
The smallest aerial angle of absolute value is as the collected aerial angle S of ith sample pointi, it specifically includes:
Work as ξij≤ 0, ξij-1> 0, and-ξij< ξij-1When, it is determined that the aerial angle S of jth time acquisitionijWith the ith sample
The absolute value of the difference of the angle of point is minimum, by the aerial angle S of jth time acquisitionijIt is collected as the ith sample point
Aerial angle Si；
Work as ξij≤ 0, ξij-1> 0, and-ξij≥ξij-1When, it is determined that the aerial angle S of jth -1 time acquisitionij-1It is adopted with described i-th
The absolute value of the difference of the angle of sampling point is minimum, the aerial angle S that jth -1 time is acquiredij-1It is adopted as the ith sample point
The aerial angle S collectedi。
4. monopulse radar directional sensitivity scaling method according to claim 1, which is characterized in that according to the following formula
Calculate the actual angle error SEi:
SEi=MinSpan (C-Si)
Wherein, C is the actual angle in calibration source, and MinSpan indicates for angle value to be converted to (- 180,180) degree range, or conversion
To (- π, π) range.
5. monopulse radar directional sensitivity scaling method according to claim 1, which is characterized in that according to the following formula
Determine the quantity n of the sampled point:
Wherein, ε is radar sampling precision preset value, θAIt is the orientation half beam width of monopulse radar, θEIt is monopulse radar
Pitching half beam width.
6. monopulse radar directional sensitivity scaling method according to claim 1, which is characterized in that according to the following formula
Determine the angle step between any two neighbouring sample point:
Or,
Wherein, θAIt is the orientation half beam width of monopulse radar, θEIt is the pitching half beam width of monopulse radar, Step is
Angle step.
7. monopulse radar directional sensitivity scaling method according to claim 6, which is characterized in that according to the following formula
Determine the angle of i-th of sampled point:
Fi=C+Step × (i-1)-θA
Or,
Fi=C+Step × (i-1)-θE
Wherein, C is the actual angle in calibration source, FiFor the angle of ith sample point.
8. monopulse radar directional sensitivity scaling method according to claim 6, which is characterized in that according to the following formula
Determine the control amount of the movement speed of the antenna:
Wherein, t is the time interval of sampling, and V is the control amount of the movement speed of the antenna, and σ % is servo-system speed mistake
Difference band range, ε are radar sampling precision preset values.
9. monopulse radar directional sensitivity scaling method according to any one of claim 1 to 8, which is characterized in that
According to the actual angle error SE at whole sampled pointsiWith the detection angle error REiObtain the monopulse radar
Directional sensitivity specifically includes:
With the actual angle error SE at whole sampled pointsiFor X-axis, with the detection angle error at whole sampled points
REiFor Y-axis, the directional sensitivity curve of the monopulse radar is obtained；
The directional sensitivity curve is fitted, the directional sensitivity slope of a curve after digital simulation is determined
To sensitivity.
10. a kind of monopulse radar directional sensitivity caliberating device characterized by comprising
Memory, for storing computer program；
Processor realizes monopulse radar as claimed in any one of claims 1-9 wherein for executing the computer program
Directional sensitivity scaling method.
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