CN113625063A - Antenna single pulse performance evaluation method under complete machine condition - Google Patents

Antenna single pulse performance evaluation method under complete machine condition Download PDF

Info

Publication number
CN113625063A
CN113625063A CN202110891230.1A CN202110891230A CN113625063A CN 113625063 A CN113625063 A CN 113625063A CN 202110891230 A CN202110891230 A CN 202110891230A CN 113625063 A CN113625063 A CN 113625063A
Authority
CN
China
Prior art keywords
antenna
radar
echo signal
signal power
performance
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
Application number
CN202110891230.1A
Other languages
Chinese (zh)
Other versions
CN113625063B (en
Inventor
张衡
顾泽凌
许颖莹
邹波
李媛媛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Radio Equipment Research Institute
Original Assignee
Shanghai Radio Equipment Research Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Radio Equipment Research Institute filed Critical Shanghai Radio Equipment Research Institute
Priority to CN202110891230.1A priority Critical patent/CN113625063B/en
Publication of CN113625063A publication Critical patent/CN113625063A/en
Application granted granted Critical
Publication of CN113625063B publication Critical patent/CN113625063B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/66—Radar-tracking systems; Analogous systems
    • G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
    • G01S13/723—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar by using numerical data
    • G01S13/726—Multiple target tracking
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The invention discloses an antenna monopulse performance evaluation method under the condition of a complete machine, which comprises the following steps: the method comprises the steps of firstly positioning a target relative to a radar, then correcting the deviation of a zero depth sum channel main beam of a difference channel of an antenna of the radar, obtaining normalization information of the difference channel and the sum channel of the antenna under different pointing angles, and analyzing the normalization information to obtain an evaluation result of the monopulse performance of the antenna. The invention utilizes the condition of the whole machine, controls the antenna to move through the control mechanism of the radar, and obtains the normalized information under different angles by adopting a signal power estimation algorithm and a data fusion algorithm, thereby rapidly realizing the evaluation of the monopulse performance of the antenna.

Description

Antenna single pulse performance evaluation method under complete machine condition
Technical Field
The invention relates to the technical field of monopulse radar tracking, in particular to an antenna monopulse performance evaluation method under the condition of a complete machine.
Background
The antenna monopulse performance determines the radar tracking performance. When the performance of the antenna is tested, a set of test system needs to be set up by using a measuring instrument in a microwave darkroom, an additional two-dimensional turntable is needed for testing the single-pulse performance of the antenna, the antenna is rotated to obtain a difference channel ratio and a channel normalization value under different angles, and the traditional method is adopted to evaluate the single-pulse performance of the antenna, so that the following problems are faced: the two-dimensional turntable precision may not meet the narrow beam antenna angle measurement precision, and the synchronization of the two-dimensional turntable angle information, the antenna difference channel ratio and the channel normalization information cannot be realized.
Disclosure of Invention
In order to solve the problems, the invention provides an antenna monopulse performance evaluation method under the condition of a complete machine, a radar mechanism is used for replacing a two-dimensional turntable, a single test system is not relied on, and a signal power estimation algorithm and a data fusion algorithm are adopted, so that the channel ratio and channel normalization information under different angles are obtained, and the antenna monopulse performance evaluation is realized.
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for evaluating the performance of a single pulse of an antenna under the condition of a complete machine comprises the following steps:
and step S1, positioning the position of the target relative to the radar.
And step S2, correcting the deviation of the zero depth of the difference channel and the main beam of the sum channel of the radar antenna.
And step S3, acquiring the normalization information of the difference channel and the sum channel of the antenna under different pointing angles.
And step S4, analyzing the normalization information to obtain an evaluation result of the monopulse performance of the antenna.
Optionally, the step S1 further includes:
and step S11, searching a target airspace by adopting radar.
Step S12, the control mechanism of the radar controls the antenna to move, records a plurality of first pointing angles of the antenna, receives the first echo signal of the sum channel at each of the first pointing angles, and estimates a first estimated signal power of each of the first echo signals by using a signal power estimation algorithm.
And step S13, processing the first estimated signal power and the first pointing angle by adopting a data fusion algorithm to obtain a three-dimensional coordinate system.
Step S14, analyzing the three-dimensional coordinate system, finding out the maximum value in the estimated power of all the first signals received by the sum channel, wherein the first pointing angle corresponding to the maximum value is the position of the target relative to the radar.
Optionally, the step S11 further includes: and presetting a search center position, a search area and a search mode of the radar, and searching a target by the radar according to the search center position, the search area and the search mode.
Optionally, the search mode is to control the motion of the control mechanism of the radar according to a "Chinese character" mode.
The step S2 further includes:
and step S21, the control mechanism of the radar controls the antenna to point to the position of the target relative to the radar.
And step S22, receiving a second echo signal of the difference channel, and estimating a second estimated signal power of the second echo signal by using the signal power estimation algorithm.
And step S23, receiving the third echo signal of the sum channel, and estimating a third estimated signal power of the third echo signal by using the signal power estimation algorithm.
Step S24, calculating a first normalization value of the second echo signal and the third echo signal;
step S25, the control mechanism of the radar controls the antenna to move, a plurality of second directional angles of the antenna are recorded, and when the antenna moves to each second directional angle, the steps S22-S24 are repeated to obtain the first normalization value corresponding to each second directional angle.
Step S26, when the first normalization value reaches the minimum value, the corresponding second directional angle is the zero depth position of the difference channel, and the correction of the deviation between the zero depth of the difference channel and the main beam of the sum channel of the antenna of the radar is completed.
Optionally, the step S25 further includes: and the control mechanism of the radar controls the antenna to move in a manual or software self-closed loop mode so as to enable the first normalization value to be converged to a minimum value.
Optionally, the step S3 further includes:
and step S31, taking the zero depth position of the difference channel as the center, and controlling the antenna to move within the main beam width by the control mechanism of the radar.
And step S32, receiving a plurality of fourth echo signals of the difference channel, a plurality of fifth echo signals of the sum channel and a plurality of third pointing angles of the antenna fed back by the control mechanism of the radar.
And step S33, estimating a fourth estimated signal power of each fourth echo signal and a fifth estimated signal power of each fifth echo signal by using the signal power estimation algorithm.
Step S34, calculating a second normalization value of the corresponding fourth echo signal and the corresponding fifth echo signal at each third pointing angle.
And step S35, establishing a two-dimensional coordinate system by adopting the data fusion algorithm according to all the second normalization values and the third pointing angles.
Optionally, the signal power estimation algorithm includes: and respectively carrying out pulse compression and coherent accumulation on the received first echo signal, second echo signal, third echo signal, fourth echo signal and fifth echo signal to obtain the power of the first to fifth estimated signals.
Optionally, the first normalization value is a ratio of the second estimated signal power to the third estimated signal power; the second normalization value is a ratio of the fourth estimated signal power to the fifth estimated signal power.
Optionally, the first pointing angle, the second pointing angle, and the third pointing angle respectively include: azimuth axis angle and elevation axis angle.
The invention has at least one of the following advantages:
1) according to the invention, the position of the target relative to the radar can be rapidly obtained by fusing the power information of the received echo signal and the angle information of the antenna.
2) By obtaining the position of the target relative to the radar, the deviation of the null depth of the difference channel and the main beam of the sum channel of the antenna of the radar can be corrected quickly.
3) The invention reduces the influence of the deviation on the evaluation result of the monopulse performance of the antenna by correcting the deviation of the zero depth of the difference channel and the main beam of the sum channel of the antenna of the radar.
4) In the process that the radar control mechanism controls the antenna to move, normalization information under different angles is obtained, the evaluation of the monopulse performance of the antenna is achieved, and the method has the characteristics of being fast, simple and convenient.
Drawings
FIG. 1 is a flow chart of a method for evaluating the performance of a single antenna pulse under overall conditions according to an embodiment of the present invention;
FIG. 2 is a flow chart of locating a position of a target relative to a radar in an embodiment of the present invention;
FIG. 3 is a flow chart of correcting the offset of the null depth of the difference channel and the main beam of the sum channel of the antenna of the radar in an embodiment of the present invention;
FIG. 4 is a block diagram of the data fusion process of step S3 according to an embodiment of the present invention;
fig. 5 shows the evaluation result of the single-pulse performance of the antenna according to an embodiment of the invention.
Detailed Description
The method for evaluating the performance of a single pulse of an antenna under the condition of a complete machine provided by the invention is clearly and completely described below with reference to the accompanying drawings and the detailed description, and it is obvious that the described embodiments are only a part of the embodiments, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, the letters in the present embodiment, such as "a", "B", "C", "W", "P", "X", "Y", "M", etc., are only for convenience of describing the present embodiment, and should not be construed as limiting the present invention.
As shown in fig. 1, the method for evaluating the performance of a single antenna pulse under the condition of a complete machine in the present embodiment includes:
and step S1, positioning the position of the target relative to the radar.
And step S2, correcting the deviation of the zero depth of the difference channel and the main beam of the sum channel of the radar antenna.
And step S3, acquiring the normalization information of the difference channel and the sum channel of the antenna under different pointing angles.
And step S4, analyzing the normalization information to obtain an evaluation result of the monopulse performance of the antenna.
As shown in fig. 2, the step S1 further includes:
and step S11, searching a target airspace by adopting radar.
Step S12, the control mechanism of the radar controls the antenna to move, records a plurality of first pointing angles of the antenna, receives the first echo signal of the sum channel at each of the first pointing angles, and estimates a first estimated signal power of each of the first echo signals by using a signal power estimation algorithm.
And step S13, processing the first estimated signal power and the first pointing angle by adopting a data fusion algorithm to obtain a three-dimensional coordinate system.
Step S14, analyzing the three-dimensional coordinate system, finding out the maximum value in the estimated power of all the first signals received by the sum channel, wherein the first pointing angle corresponding to the maximum value is the position of the target relative to the radar.
With continued reference to fig. 2, the step S11 further includes: presetting a search center position, a search area and a search mode of the radar, wherein the radar carries out target search according to the search center position, the search area and the search mode; the searching mode is to control the motion of the control mechanism of the radar according to the 'Chinese character' mode.
As shown in fig. 3, the step S2 further includes:
and step S21, the control mechanism of the radar controls the antenna to point to the position of the target relative to the radar.
And step S22, receiving a second echo signal of the difference channel, and estimating a second estimated signal power of the second echo signal by using the signal power estimation algorithm.
And step S23, receiving the third echo signal of the sum channel, and estimating a third estimated signal power of the third echo signal by using the signal power estimation algorithm.
Step S24, calculating a first normalization value of the second echo signal and the third echo signal.
Step S25, the control mechanism of the radar controls the antenna to move, records a plurality of second directional angles of the antenna, and repeats the steps S22-S24 when each of the second directional angles of the antenna moves, so as to obtain the first normalization value corresponding to each of the second directional angles.
Step S26, when the first normalization value reaches the minimum value, the corresponding second directional angle is the zero depth position of the difference channel, and the correction of the deviation between the zero depth of the difference channel and the main beam of the sum channel of the antenna of the radar is completed.
The step S3 of this embodiment further includes:
and step S31, taking the zero depth position of the difference channel as the center, and controlling the antenna to move within the main beam width by the control mechanism of the radar.
And step S32, receiving a plurality of fourth echo signals of the difference channel, a plurality of fifth echo signals of the sum channel and a plurality of third pointing angles of the antenna fed back by the control mechanism of the radar.
And step S33, estimating a fourth estimated signal power of each fourth echo signal and a fifth estimated signal power of each fifth echo signal by using the signal power estimation algorithm.
Step S34, calculating a second normalization value of the corresponding fourth echo signal and the corresponding fifth echo signal at each third pointing angle.
And step S35, establishing a two-dimensional coordinate system by adopting the data fusion algorithm according to all the second normalization values and the third pointing angles.
In this embodiment, the signal power estimation algorithm includes: and respectively carrying out pulse compression and coherent accumulation on the received first echo signal, second echo signal, third echo signal, fourth echo signal and fifth echo signal to obtain the power of the first to fifth estimated signals.
In this embodiment, the first normalization value is a ratio of the second estimated signal power to the third estimated signal power; the second normalization value is a ratio of the fourth estimated signal power to the fifth estimated signal power.
In this embodiment, the first pointing angle, the second pointing angle, and the third pointing angle respectively include: azimuth axis angle and elevation axis angle.
A preferred embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1, the method for evaluating the performance of a single antenna pulse under the condition of a complete machine in the present embodiment includes:
and step S1, positioning the position of the target relative to the radar.
And step S2, the control mechanism of the radar controls the antenna to rotate, so that the energy of the difference channel of the monopulse antenna relative to the sum channel is minimum, and the deviation between the zero depth of the difference channel of the monopulse antenna and the main beam of the sum channel is corrected.
And step S3, acquiring the normalization information of the difference channel and the sum channel of the antenna under different pointing angles.
And step S4, analyzing the normalization information to obtain an evaluation result of the monopulse performance of the antenna.
As shown in fig. 2, the step S1 further includes:
step S11, setting the search area of the radar: the radar in the search area and the search mode.
Step S12, receiving the N first echo signals of the sum channel, estimating a first estimated signal power W of each first echo signal by using the signal power estimation algorithm, and recording N first pointing angles (X, Y) of the antenna.
And step S13, obtaining N three-dimensional coordinates (X, Y, W) by adopting a data fusion processing algorithm, and drawing and processing the N three-dimensional coordinates to obtain a three-dimensional coordinate system.
Step S14, analyzing the three-dimensional coordinate system, and finding out the maximum value W in the N first signal estimated powers W received by the sum channelmaxSaid maximum value WmaxCorresponding first pointing angle (A)max，Bmax) Is the position of the target relative to the radar.
Wherein: a represents the azimuth axis angle of the antenna, B represents the elevation axis angle of the antenna, X represents the azimuth axis angle of the antenna from A-C/2 to A + C/2, and Y represents the elevation axis angle of the antenna from B-C/2 to B + C/2.
As shown in fig. 3, the step S2 further includes:
step S21, the control mechanism of the radar controls the antenna to point to the position of the target relative to the radar (A)max，Bmax)。
And step S22, receiving a second echo signal of the difference channel, and estimating a second estimated signal power M of the second echo signal by using the signal power estimation algorithm.
And step S23, receiving the third echo signal of the sum channel, and estimating a third estimated signal power N of the third echo signal by using the signal power estimation algorithm.
And step S24, calculating a first normalization value M/N of the second echo signal and the third echo signal.
Step S25, the control mechanism of the radar controls the antenna to move, a plurality of second directional angles of the antenna are recorded, and when the antenna moves to each second directional angle, the steps S22-S24 are repeated to obtain the first normalization value M/N corresponding to each second directional angle.
Step S26, the corresponding second directive angle (A ') when the first normalization value reaches the minimum value'max，B'max) And finishing the correction of the deviation between the zero depth of the difference channel of the antenna of the radar and the main beam of the sum channel for the zero depth position of the difference channel.
In this embodiment, the step S25 further includes: and the control mechanism of the radar controls the antenna to move in a manual or software self-closed loop mode so as to enable the first normalization value to be converged to a minimum value.
The step S3 of this embodiment further includes:
step S31 with zero depth position (A ') of the difference channel'max，B'max) As a center, the control mechanism of the radar controls the antenna to move within the main beam width.
And step S32, receiving P fourth echo signals of the difference channel, P fifth echo signals of the sum channel and P third pointing angles J of the antenna fed back by the control mechanism of the radar.
Step S33, as shown in fig. 4, estimating a fourth estimated signal power S of each fourth echo signal and a fifth estimated signal power T of each fifth echo signal by using the signal power estimation algorithm, where P fourth estimated signal powers S are recorded in a first storage area with a length Z, the first storage area is divided into P units, and S in the diagram is S1-SpThe fourth estimated signal power S and the P fifth estimated signal powers T respectively corresponding to the units 1-P are recorded in a second storage area with the length Z, the second storage area is divided into P units, and T in the figure1-TpRespectively correspond to 1-said fifth estimated signal power T of P units, P said third angles being recorded to a third memory area of length Z, said third memory area being divided into P units, J in the figure1-JPThe third pointing angles J of the units 1-P, respectively.
Step S34, calculating a second normalization value G of the corresponding fourth echo signal and the corresponding fifth echo signal at each third pointing angle J.
The second normalized value G is calculated by the following formula:
Gi＝Si/Ti (1)
wherein i is 1,2,3 … P, SiFourth estimated signal power S, T for unit iiThe fifth estimated signal power T, G corresponding to unit iiAnd the second normalized value G is corresponding to the unit i.
Step S35, with continued reference to fig. 4, perform the data fusion process on the second normalization value G and the third angle J to obtain P two-dimensional coordinates (J, G), so as to obtain a two-dimensional coordinate system.
Wherein: the third pointing angle J includes: azimuth axis angle and elevation axis angle.
In this embodiment, the signal power estimation algorithm includes: and respectively carrying out pulse compression and coherent accumulation on the received first echo signal, second echo signal, third echo signal, fourth echo signal and fifth echo signal to obtain the power of the first to fifth estimated signals.
As shown in fig. 5, the two-dimensional coordinate system is analyzed to obtain an antenna monopulse performance evaluation result, which is shown in the table at the upper right corner of fig. 5.
The method for evaluating the monopulse performance of the antenna under the condition of the whole machine disclosed by the embodiment utilizes the condition of the whole machine, controls the motion of the antenna through the radar control mechanism, and obtains normalization information under different angles by adopting a signal power estimation algorithm and a data fusion algorithm, so that the monopulse performance evaluation of the antenna is quickly realized.
It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be noted that the apparatuses and methods disclosed in the embodiments herein can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments herein. In this regard, each block in the flowchart or block diagrams may represent a module, a program, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments herein may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.

Claims (10)

1. A method for evaluating the performance of a single pulse of an antenna under the condition of a complete machine is characterized by comprising the following steps:
step S1, positioning the position of the target relative to the radar;
step S2, correcting the deviation of the zero depth of the difference channel and the main beam of the sum channel of the radar antenna;
step S3, acquiring normalization information of the difference channel and the sum channel of the antenna under different pointing angles;
and step S4, analyzing the normalization information to obtain an evaluation result of the monopulse performance of the antenna.
2. The method for evaluating the performance of a single antenna pulse under the complete machine condition according to claim 1, wherein the step S1 further comprises:
s11, searching a target airspace by adopting a radar;
step S12, the control mechanism of the radar controls the antenna to move, a plurality of first pointing angles of the antenna are recorded, first echo signals of the sum channel under each first pointing angle are received, and a first estimated signal power of each first echo signal is estimated by adopting a signal power estimation algorithm;
step S13, processing the first estimated signal power and the first pointing angle by adopting a data fusion algorithm to obtain a three-dimensional coordinate system;
step S14, analyzing the three-dimensional coordinate system, finding out the maximum value in the estimated power of all the first signals received by the sum channel, wherein the first pointing angle corresponding to the maximum value is the position of the target relative to the radar.
3. The method for evaluating the performance of a single antenna pulse under the complete machine condition according to claim 2, wherein the step S11 further comprises: and presetting a search center position, a search area and a search mode of the radar, and searching a target by the radar according to the search center position, the search area and the search mode.
4. The method for evaluating the performance of the antenna monopulse under the complete machine condition according to claim 3, wherein the searching mode is a mode of controlling the motion of a control mechanism of the radar according to a ' Chinese character ' already '.
5. The method for evaluating the performance of a single antenna pulse under the complete machine condition according to claim 1, wherein the step S2 further comprises:
step S21, the control mechanism of the radar controls the antenna to point to the position of the target relative to the radar;
step S22, receiving a second echo signal of the difference channel, and estimating a second estimated signal power of the second echo signal by using the signal power estimation algorithm;
step S23, receiving a third echo signal of the sum channel, and estimating a third estimated signal power of the third echo signal by using the signal power estimation algorithm;
step S24, calculating a first normalization value of the second echo signal and the third echo signal;
step S25, the control mechanism of the radar controls the movement of the antenna, a plurality of second directional angles of the antenna are recorded, and when the antenna moves to each second directional angle, the steps S22-S24 are repeated to obtain the first normalization value corresponding to each second directional angle;
and step S26, when the first normalization value reaches a minimum value, the corresponding second pointing angle is a zero depth position of the difference channel, and correction of a deviation between a zero depth of the difference channel and a main beam of the sum channel of the antenna of the radar is completed.
6. The method for evaluating the monopulse performance of an antenna under the complete machine condition according to claim 5, wherein the step S25 further comprises: and the control mechanism of the radar controls the antenna to move in a manual or software self-closed loop mode so as to enable the first normalization value to be converged to a minimum value.
7. The method for evaluating the performance of a single antenna pulse under the complete machine condition according to claim 1, wherein the step S3 further comprises:
step S31, taking the zero depth position of the difference channel as the center, the control mechanism of the radar controls the antenna to move in the main beam width;
step S32, receiving a plurality of fourth echo signals of the difference channel, a plurality of fifth echo signals of the sum channel and a plurality of third pointing angles of the antenna fed back by a control mechanism of the radar;
step S33, estimating a fourth estimated signal power of each fourth echo signal and a fifth estimated signal power of each fifth echo signal by using the signal power estimation algorithm;
step S34, calculating a second normalization value of the corresponding fourth echo signal and the corresponding fifth echo signal at each third pointing angle;
and step S35, establishing a two-dimensional coordinate system by adopting the data fusion algorithm according to all the second normalization values and the third pointing angles.
8. The antenna monopulse performance evaluation method under complete machine conditions according to claim 7, wherein said signal power estimation algorithm comprises: and respectively carrying out pulse compression and coherent accumulation on the received first echo signal, second echo signal, third echo signal, fourth echo signal and fifth echo signal to obtain the power of the first to fifth estimated signals.
9. The overall antenna monopulse performance evaluation method according to claim 8, wherein the first normalization value is a ratio of the second estimated signal power to the third estimated signal power; the second normalization value is a ratio of the fourth estimated signal power to the fifth estimated signal power.
10. The method for evaluating the performance of a single antenna pulse under the complete machine condition according to claim 9, wherein the first pointing angle, the second pointing angle and the third pointing angle respectively comprise: azimuth axis angle and elevation axis angle.
CN202110891230.1A 2021-08-04 2021-08-04 Method for evaluating single pulse performance of antenna under complete machine condition Active CN113625063B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110891230.1A CN113625063B (en) 2021-08-04 2021-08-04 Method for evaluating single pulse performance of antenna under complete machine condition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110891230.1A CN113625063B (en) 2021-08-04 2021-08-04 Method for evaluating single pulse performance of antenna under complete machine condition

Publications (2)

Publication Number Publication Date
CN113625063A true CN113625063A (en) 2021-11-09
CN113625063B CN113625063B (en) 2024-01-02

Family

ID=78382633

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110891230.1A Active CN113625063B (en) 2021-08-04 2021-08-04 Method for evaluating single pulse performance of antenna under complete machine condition

Country Status (1)

Country Link
CN (1) CN113625063B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114415136A (en) * 2022-03-29 2022-04-29 南京气象科技创新研究院 Method and system for online calibrating echo intensity by continuous wave weather radar

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084160A (en) * 1975-05-22 1978-04-11 Siemens-Albis Aktiengesellschaft Arrangement for correcting deviations from the true bearing caused by reflecting surfaces in target tracking radar installations
US20030020646A1 (en) * 2001-06-15 2003-01-30 Kai-Bor Yu Adaptive digital sub-array beamforming and deterministic sum and difference beamforming, with jamming cancellation and monopulse ratio preservation
US7616150B1 (en) * 2007-09-27 2009-11-10 Rockwell Collins, Inc. Null steering system and method for terrain estimation
CN101587188A (en) * 2008-05-22 2009-11-25 电子科技大学 Monopulse radar system based on time modulation antenna array
JP2010071889A (en) * 2008-09-19 2010-04-02 Toshiba Corp Radar system mounted on movable body and calibration method
US20120133548A1 (en) * 2010-11-27 2012-05-31 Eads Deutschland Gmbh Method for Direction Finding by Means of Monopulse Formation
JP2013174498A (en) * 2012-02-24 2013-09-05 Mitsubishi Electric Corp Monopulse angle measurement apparatus and monopulse angle measurement method
DE102012016475A1 (en) * 2012-08-17 2014-02-20 Eads Deutschland Gmbh Method for directional bearing according to the monopulse principle
CN103728614A (en) * 2014-01-15 2014-04-16 西安电子科技大学 Mechanical scanning meter wave radar based method for improving single pulse angle measurement
CN104075699A (en) * 2014-07-07 2014-10-01 温州大学 Three-dimensional solid-state electronic compass and method for correcting zero points and proportional coefficients of sensors of electronic compass
CN104931958A (en) * 2015-07-14 2015-09-23 上海无线电设备研究所 Double-difference beam angle measurement method and system
CN105093184A (en) * 2015-08-14 2015-11-25 上海航天测控通信研究所 Method and device for improving single-pulse angle measuring precision of search radar
CN105698821A (en) * 2016-01-29 2016-06-22 中国人民解放军63756部队 Pointing error calibration method for sum and difference channels of antenna
CN106526583A (en) * 2016-10-21 2017-03-22 北京无线电测量研究所 Antenna directional pattern information-based ground moving target positioning method
CN106680789A (en) * 2016-12-19 2017-05-17 四川九洲电器集团有限责任公司 Angle measurement function verification method of single pulse angle measurement device and verification system
CN110441620A (en) * 2019-08-14 2019-11-12 中电科仪器仪表有限公司 A kind of multifrequency point dynamic of antenna house aiming-line error test searches zero method and system
CN110488255A (en) * 2019-09-09 2019-11-22 上海无线电设备研究所 A kind of phased-array radar pulse high-resolution angle measuring system and method
KR20200033598A (en) * 2018-09-20 2020-03-30 국방과학연구소 Method of correcting azimuth angle for GMTI targets using difference channel in Monopulse radar
CN112083388A (en) * 2020-09-10 2020-12-15 四川九洲空管科技有限责任公司 Point trace quality evaluation method based on secondary radar response signal
CN113176559A (en) * 2021-04-13 2021-07-27 广东纳睿雷达科技股份有限公司 Two-dimensional angle measurement vehicle-mounted radar system, radar two-dimensional angle measurement method and storage medium

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084160A (en) * 1975-05-22 1978-04-11 Siemens-Albis Aktiengesellschaft Arrangement for correcting deviations from the true bearing caused by reflecting surfaces in target tracking radar installations
US20030020646A1 (en) * 2001-06-15 2003-01-30 Kai-Bor Yu Adaptive digital sub-array beamforming and deterministic sum and difference beamforming, with jamming cancellation and monopulse ratio preservation
US7616150B1 (en) * 2007-09-27 2009-11-10 Rockwell Collins, Inc. Null steering system and method for terrain estimation
CN101587188A (en) * 2008-05-22 2009-11-25 电子科技大学 Monopulse radar system based on time modulation antenna array
JP2010071889A (en) * 2008-09-19 2010-04-02 Toshiba Corp Radar system mounted on movable body and calibration method
US20120133548A1 (en) * 2010-11-27 2012-05-31 Eads Deutschland Gmbh Method for Direction Finding by Means of Monopulse Formation
JP2013174498A (en) * 2012-02-24 2013-09-05 Mitsubishi Electric Corp Monopulse angle measurement apparatus and monopulse angle measurement method
DE102012016475A1 (en) * 2012-08-17 2014-02-20 Eads Deutschland Gmbh Method for directional bearing according to the monopulse principle
CN103728614A (en) * 2014-01-15 2014-04-16 西安电子科技大学 Mechanical scanning meter wave radar based method for improving single pulse angle measurement
CN104075699A (en) * 2014-07-07 2014-10-01 温州大学 Three-dimensional solid-state electronic compass and method for correcting zero points and proportional coefficients of sensors of electronic compass
CN104931958A (en) * 2015-07-14 2015-09-23 上海无线电设备研究所 Double-difference beam angle measurement method and system
CN105093184A (en) * 2015-08-14 2015-11-25 上海航天测控通信研究所 Method and device for improving single-pulse angle measuring precision of search radar
CN105698821A (en) * 2016-01-29 2016-06-22 中国人民解放军63756部队 Pointing error calibration method for sum and difference channels of antenna
CN106526583A (en) * 2016-10-21 2017-03-22 北京无线电测量研究所 Antenna directional pattern information-based ground moving target positioning method
CN106680789A (en) * 2016-12-19 2017-05-17 四川九洲电器集团有限责任公司 Angle measurement function verification method of single pulse angle measurement device and verification system
KR20200033598A (en) * 2018-09-20 2020-03-30 국방과학연구소 Method of correcting azimuth angle for GMTI targets using difference channel in Monopulse radar
CN110441620A (en) * 2019-08-14 2019-11-12 中电科仪器仪表有限公司 A kind of multifrequency point dynamic of antenna house aiming-line error test searches zero method and system
CN110488255A (en) * 2019-09-09 2019-11-22 上海无线电设备研究所 A kind of phased-array radar pulse high-resolution angle measuring system and method
CN112083388A (en) * 2020-09-10 2020-12-15 四川九洲空管科技有限责任公司 Point trace quality evaluation method based on secondary radar response signal
CN113176559A (en) * 2021-04-13 2021-07-27 广东纳睿雷达科技股份有限公司 Two-dimensional angle measurement vehicle-mounted radar system, radar two-dimensional angle measurement method and storage medium

Non-Patent Citations (13)

* Cited by examiner, † Cited by third party
Title
NAM, JH等: "Modeling of Monopulse Radar Signals Reflected from Ground Clutter in a Time Domain Considering Doppler Effects", JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, vol. 20, no. 3, pages 190 - 198 *
ZHUO ZHANG等: "Measurement and performance of digital monopulse radar array antenna", 2010 INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY, pages 983 - 986 *
何松华;蒋政胜;张军;: "弹载宽带相控阵单脉冲雷达通道级STAP与ATBF研究", 信号处理, no. 09, pages 104 - 112 *
吴磊;房卫军;张建凌;: "雷达罩对机载脉冲多普勒雷达的性能影响分析", 火控雷达技术, no. 01, pages 90 - 95 *
朱伟等: "两维数字阵列雷达的数字单脉冲测角方法", 系统工程与电子技术, vol. 33, no. 07, pages 1503 - 1509 *
李增有等: "双通道跟踪接收机的动态极化校相", 电讯技术, pages 97 - 101 *
杨明远;徐笛;江利中;丁红晖;顾泽凌;张衡;: "基于最小全变差的雷达测距方法", 现代防御技术, vol. 48, no. 04, pages 82 - 89 *
王广宇;: "二次雷达单脉冲测角技术及OBA表校验", 信息通信, no. 09, pages 132 - 134 *
纪涛涛: "单脉冲天线的研究与设计", 中国优秀硕士学位论文全文数据库 (信息科技辑), pages 136 - 47 *
胡鑫等: "一种加权解卷积波束锐化算法", 制导与引信, vol. 41, no. 1, pages 33 - 37 *
陈晓旭等: "一种改进的两维阵列数字单脉冲测角方法", 电子信息对抗技术, vol. 27, no. 6, pages 1 - 5 *
雷剑梅等: "单元波束夹角对和差单脉冲测角性能的影响研究", 电子测量与仪器学报, vol. 21, no. 5, pages 26 - 30 *
马振球;崔嵬;: "相位和差单脉冲雷达测角性能分析", 北京理工大学学报, no. 08, pages 72 - 77 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114415136A (en) * 2022-03-29 2022-04-29 南京气象科技创新研究院 Method and system for online calibrating echo intensity by continuous wave weather radar
CN114415136B (en) * 2022-03-29 2022-06-10 南京气象科技创新研究院 Method and system for online calibrating echo intensity by continuous wave weather radar

Also Published As

Publication number Publication date
CN113625063B (en) 2024-01-02

Similar Documents

Publication Publication Date Title
CN111912409B (en) Programmable intelligent reflector-assisted multi-mobile-equipment positioning method and device
CN108776330B (en) High-precision calibration method and device for multiple receiving channels of FMCW radar
KR20020050224A (en) Registration method for multiple sensor radar
CN111220954B (en) Radar angle error correction method based on self-correcting amplitude normalization
US9660740B2 (en) Signal strength distribution establishing method and wireless positioning system
CN108090956B (en) Geometric correction method and system
CN111398902B (en) Passive distance and direction measuring method for right-angled triangle ternary hydrophone array
CN109061638B (en) Phased array close-range digital imaging method
JP2020516906A (en) Direction detection with disambiguation
US20180321352A1 (en) Pose Estimation Using Radio Frequency Identification (RFID) Tags
WO2011093805A1 (en) A system and a method for simultaneous position, mutual coupling and gain/phase calibration of antenna arrays
CN111381215A (en) Phase correction method and meteor position acquisition method
CN114624742A (en) Amplitude-phase error calibration positioning method and device for polarization sensitive array
RU2608583C1 (en) Method of determining position and motion parameters of object as per measurements of angular coordinates
CN108566677B (en) Fingerprint positioning method and device
CN110441769A (en) Object localization method, device and storage medium based on the sequential image of SAR
CN110018440B (en) Direction finding method, device and system for L-shaped right-angle array based on directional antenna
CN113625063B (en) Method for evaluating single pulse performance of antenna under complete machine condition
US20110205121A1 (en) Method of determining real time location of reflecting objects and system thereof
CN117075099A (en) Three-dimensional deformation measurement method, three-dimensional deformation measurement device, computer equipment and medium
CN114553334B (en) Phased array antenna pointing error measurement method, system, terminal and device
CN113447908B (en) GPS Beidou coordinate acquisition method and device for fixed radar detection target
US20210215793A1 (en) Method and system for antenna array calibration for cross-coupling and gain/phase variations in radar systems
CN116087871A (en) Direction finding method, device and system for circular array interferometer and storage medium
CN112881971B (en) Direction finding method for coherent interference source under electromagnetic directional mutual coupling effect

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