CN111596269B - Method for detecting radar composite detection target capability - Google Patents
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- CN111596269B CN111596269B CN202010449359.2A CN202010449359A CN111596269B CN 111596269 B CN111596269 B CN 111596269B CN 202010449359 A CN202010449359 A CN 202010449359A CN 111596269 B CN111596269 B CN 111596269B
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Abstract
The invention relates to a method for detecting the composite detection target capability of a radar, and belongs to the technical field of methods for detecting the composite detection target capability of the radar. The method comprises the following detection steps: 1) detecting environmental requirements: the device is arranged in water surface environments such as sea surface or lake surface and the like, and no other water surface ships, island targets or relevant electromagnetic equipment devices exist within the range of 15-30Km around the device; 2) detecting equipment configuration: three overwater moving targets needing radar simulation detection are needed to be configured in detection, namely a target M, a target A and a target B, the three targets are simulated by adopting a small boat, a corner reflector is additionally arranged on the boat, and an electromagnetic radiation source is additionally arranged to simulate radar equipment loaded by the targets; 3) and detecting the detection capability of the radar. The method effectively solves the problems that the detection of the composite detection capability of the radar has higher requirements on environment and target characteristics and cannot be found in reality, meets the detection requirement of the composite detection actual capability of the radar, and lays a foundation for the actual application of the radar.
Description
Technical Field
The invention relates to a method for detecting the composite detection target capability of a radar, and belongs to the technical field of methods for detecting the composite detection target capability of the radar.
Background
In order to adapt to increasingly complex application environments, the technical performance of the radar needs to be improved continuously, and the effective detection capability of the target needs to be enhanced, wherein the optimization of the radar detection mode is one of effective means. The radar composite detection can adopt an active mode, a passive mode or an active and passive composite mode as required, and the composite detection mode can better adapt to complex application environments and improve the capability of detecting, finding and selecting targets. Because the actual environment of the radar composite detection design is extremely complex, the electromagnetic characteristic of a target is also required, different detection modes need corresponding application environments, the environment is difficult to find in reality to test the effective performance of the target, and the detection requirement of the radar composite detection actual capacity cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for detecting the composite detection target capability of the radar, and in view of the above, a relatively simple and easy-to-implement method is designed for detecting the composite detection capability of the radar, so that the problems that the composite detection capability of the radar has higher requirements on environment and target characteristics and cannot be found in reality are effectively solved, the detection requirement of the composite detection actual capability of the radar is met, and a foundation is laid for the actual application of the radar. The method has the advantages of strong pertinence, good universality, easy realization of equipment and equipment matching and simple requirement on detection environment.
A method for detecting the composite target detection capability of a radar is characterized in that:
1. detecting environmental requirements
The device is arranged in water surface environments such as sea surface or lake surface and the like, and requires a wide water surface area, and no other water surface ships, island targets or relevant electromagnetic equipment devices exist within the range of 15-30Km around the device;
2. detection equipment configuration
The detection work needs to be provided with a simulation detection target, electromagnetic radiation equipment loaded by the simulation detection target and related equipment, and the related matched equipment comprises the following equipment:
(1) simulation target
Three overwater moving targets needing radar simulation detection are arranged in the detection, namely a target M, a target A and a target B, the three targets are simulated by adopting a small boat, a corner reflector is additionally arranged on the boat, RCS is improved, the 800-plus-9000T ship target is simulated, and an electromagnetic radiation source is additionally arranged to simulate radar equipment loaded by the target, so that the performance requirement of the detected radar on the detected target is met;
the small-sized boat adopts a small-sized traffic boat produced by Dalian Europe Lun Ship industry Limited company, the boat has the advantages of good navigability, high maneuvering speed, flexible operation, strong refitting and ensuring capability, and the main indexes are as follows: the total length is as follows: 23m, width of the ship: 6m, depth of mold: 2.76m, draft: 1.09 m, speed: 30Kn, full load displacement: 52.5T, power main engine: 2x CAT C321081 kw (1450bhp) @2300rpm, auxiliary generator: 2x kohler 25 kw;
the corner reflector is annular and is formed by continuously connecting a plurality of unit corner reflectors 2 in series on a circumferential support with the diameter of 2.5m, the corner reflectors 2 are trihedrons formed by equilateral triangles, the circumferential support is welded on the top of a triangular support 3, the height of the triangular support 3 is 3m, and the bottom of the triangular support 3 is welded on a deck at the top of a boat;
the method comprises the following steps that corner reflectors of RCS lower limit indexes and RCS upper limit indexes of a radar to be detected are respectively added to a target A and a target B, a corner reflector of RCS mean indexes of the radar to be detected is added to a target M, the RCS of the corner reflector depends on a unit corner reflector 2, a unit corner reflector 2RCS calculation model is shown as the following formula, the side length a of the unit corner reflector 2 is determined through calculation of the model, the sigma value in the formula corresponds to the RCS, and the lambda is the wavelength of the radar to be detected;
wherein: sigma is radar RCS, lambda is radar electromagnetic wavelength, and a is obtained;
the electromagnetic radiation source adopts a navigation radar, the navigation radar is selected according to the size of a small boat, and the target A, the target M and the target B are respectively selected according to small, medium and large ships;
the radar antenna of the electromagnetic radiation source is arranged at the highest position of a main mast of a boat, the radar antenna is arranged on an antenna support, and then the antenna support (including the whole antenna) is welded at the top end of the main mast;
the navigation radar is a navigation radar for obtaining IMO and identifying common ancient Field (FURUNO) ships;
the navigation radar model of the target M is FR-1505, the working frequency is 9410 +/-30 MHz, the maximum power is 6Kw, the working distance is 0.25-24 nm, the radiation source antenna XN12AF4ft, the wave beam is H1.8 degrees, the V25 degrees and the rotating speed is 24-40 rpm;
the navigation radar model of the target A is FR-2117, the working frequency is 9410 +/-30 MHz, the maximum power is 12W, the working distance is 0.5-35 nm, the radiation source antenna XN20AF4ft, the wave beam is H1.23 degrees, V20 degrees and the rotating speed is 24 rpm;
the navigation radar model of the target B is FR-2827W, the working frequency is 9410 +/-30 MHz, the maximum power is 25Kw, the working distance is 0.5-48 nm, the radiation source antenna XN24AF4ft, the wave beam is H1.95 degrees, V20 degrees and the rotating speed is 21 rpm;
3. detecting the detection capability of the radar:
detecting the detection capability of the radar in an active mode, a passive mode and a composite mode respectively according to the working mode of the radar with the composite detection capability;
3.1 detection of detection Capacity in Radar active mode
The active mode is that the detected radar actively emits electromagnetic waves outwards and then receives the reflected echo of the target to complete the detection, identification and tracking of the target, and the RCS and dynamic spacing change of the target can influence the detection capability in the active mode;
3.1.1 detection scenario configuration
The active effective detection distance of the radar 1 to be detected is D1, the target M is arranged in the effective detection distance, the targets A and B are arranged on a vertical line of a connecting line of the radar 1 and the target M, the targets A and B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a1, the distance between the target B and the target M is B1, and the distance is used as the initial situation state of radar detection;
the values of a1 and b1 are 2-3 times of the lateral width Lc corresponding to the D1 and the radar horizontal beam angle alpha, and the Lc is obtained by the following calculation formula
In the formula, alpha is a radar beam angle, and Dc takes the value D1;
3.1.2 detection implementation and result determination
According to a design scene, the active detection mode is to detect the effective detection ranges of a target A, a target B and a target M and the azimuth resolution capability of the target M under the normal working condition of the radar, and the specific method comprises the following steps:
and (3) detecting the effective detection range of the target:
the target A, the target B and the target M respectively use the initial positions of the targets as the circle centers, the connection directions of the targets and the radar 1 are respectively used as long axes to carry out the maneuvering of the elliptical flight path, the short axis of the elliptical flight path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance detected and found by the radar 1 on each target;
and (3) detection results: the longer the farthest distance of the radar 1 to the target A and the target B is, the better the active detection capability of the radar 1 is, and the larger the detection range of the radar 1 to the target M is, the stronger the capability of the radar 1 to find a preselected target is, so that the active effective detection capability of the radar 1 to a limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the target A, B is fixed in place, the target M is in an inverted 8-shaped maneuver taking the initial position as the center and the AB connection direction as the flight path, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the target M and the target A and the target B detected by the radar 1 is, the stronger the active detection target resolution tracking capability of the radar 1 is;
3.2 detection capability detection in Passive Radar mode
The radar passive mode is that the detected radar does not emit electromagnetic waves and only receives the electromagnetic waves of a target radar radiation source to complete target detection identification and tracking work, equipment used by the detected radar passive mode is independently configured, and the performance of the target radar radiation source and the change of the distance between target maneuvering and dynamic positions have great influence on the detection capability;
3.2.1 detection scenario configuration
The passive effective detection distance of the radar 1 to be detected is D2, the target M is arranged in the effective detection distance, the targets A and B are arranged on a vertical line of a connecting line of the radar 1 and the target M, the targets A and B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a2, the distance between the target B and the target M is B2, and the distance is used as the initial situation state of radar detection;
the values a2 and B2 are 2-3 times of the lateral width Lc corresponding to the D2 and the mean value of the horizontal beam angle alpha of the target A and the target B and the navigation radar, and the Lc is obtained by adopting the following calculation formula
In the formula, alpha is a horizontal beam angle of a target A, B and a navigation radar, and Dc takes a value D2;
3.2.2 implementation of the assay and determination of the results
According to a design scene, an active detection mode is mainly used for detecting an A, B, M target effective detection range and M azimuth resolution capacity under the normal working condition of a radar, and the specific method is as follows:
and (3) detecting the effective detection range of the target:
starting the target A and the target B navigation radar in the whole process, wherein the target A, the target B and the target M respectively use respective initial positions as circle centers and use the respective connecting line direction with the radar 1 as a long axis to carry out elliptical path maneuvering, the short axis of the elliptical path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance which are detected by the radar 1 through electromagnetic wave radiation of each target navigation radar;
and (3) detection results: the longer the farthest distance of the radar 1 to the target A and the target B is, the better the passive detection capability of the radar 1 is, and the larger the detection range of the radar 1 to the target M is, the stronger the capability of the radar 1 to passively detect and find the preselected target is, so that the effective passive detection capability of the radar 1 to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the target A, the target M and the target B navigation radar are started in the whole process, the target A and the target B are in situ fixed, the target M performs inverted 8-shaped maneuvering by taking the initial position as the center and the AB connection direction as the air route, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the target M and the target A and the target B is detected by the radar 1, the stronger the passive detection target resolution tracking capability of the radar 1 is;
3.3 detection capability detection under composite mode of radar
The radar composite mode is that the active channel and the passive channel of the radar to be detected work simultaneously, and the target identification and tracking work can be completed only after the active channel and the passive channel lock the target simultaneously. In this mode, both the RCS of the target and its loaded radar radiation source device have an effect on the detection capability.
3.3.1 detection scenario configuration
The composite effective detection distance of the radar 1 to be detected is D3, a target M is arranged in the effective detection distance, a target A and a target B are arranged on a vertical line of a connecting line of the radar 1 and the target M, the target A and the target B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a3, the distance between the target B and the target M is B3, and the target A and the target B are used as the initial situation state of radar detection;
the values a3 and B3 are 2-3 times of the lateral width Lc corresponding to the D3 and the horizontal beam angle mean value alpha of the target A and the target B which are additionally provided with the navigation radar, and the Lc is obtained by adopting the following calculation formula
In the formula, alpha is a horizontal beam angle of a target A, B and a navigation radar, and Dc takes a value D3;
3.3.2 detection implementation and result determination
According to a design scene, a composite detection mode is mainly used for detecting the effective detection ranges of a target A, a target B and a target M and the azimuth resolution capability of the target M under the normal working condition of the radar, and the specific method is as follows.
And (3) detecting the effective detection range of the target:
the navigation radar of the target A, the target M and the target B is started in the whole process, the target A, the target B and the target M respectively use the initial positions of the targets as the circle centers and use the connection directions of the targets and the radar 1 as long axes to carry out the maneuvering of the elliptical flight path, the short axis of the elliptical flight path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance which are found by the radar 1 in the composite detection of the targets;
and (3) detection results: the longer the farthest distance of the radar 1 to the detection of the target A and the target B is, the better the composite detection capability of the radar 1 is, the larger the detection range of the radar 1 to the target M is, the stronger the composite detection capability of the radar 1 to find the preselected target is, and therefore the composite effective detection capability of the radar 1 to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the first detection is that a target A, a target M and a target B navigation radar are started in the whole process, the target A and the target B are not moved in situ, the target M performs inverted 8-shaped maneuvering by taking an initial position as a center and taking an AB connecting line direction as a flight line, and in the process that the target M approaches the target A and the target B, the radar 1 detects that the resolution distance between the target M and the target A and the target B is smaller, which indicates that the composite detection target resolution tracking capability of the radar 1 is stronger;
and in the second detection, the target A and the target B navigation radars are shut down in the whole process, the target M navigation radar is started in the whole process, the target A and the target B are not moved in situ, the target M performs inverse 8-shaped maneuvering by taking the initial position as the center and the AB connecting line direction as the air route, and the smaller the resolution distance between the target M and the target A and the target B detected by the radar 1 is, the stronger the composite detection target resolution tracking capability of the radar 1 is.
The method for detecting the composite detection capability of the radar is an effective means for improving the capability of the radar for detecting, identifying and tracking the target in a complex environment, creates good conditions for the radar to carry out automatic information processing of the situation of the detected target, and is one of the directions for improving the comprehensive technical performance of the radar at present. The invention is based on the radar composite detection capability detection in the actual environment, and can generate the following main benefits.
(1) Fills the gap of radar composite detection capability detection in the outfield environment
The method for simulating the composite detection capability of the radar in the actual environment is novel, can effectively simulate the dynamic changes of the working environment, the target distribution condition and the situation of the radar, can cover the main working mode of the composite detection of the radar to the maximum extent, does not have a similar related composite detection method and means for the radar at present, and effectively fills the blank of the field;
(2) has good detection universality and easy use
Under the condition of meeting the radar detection requirement, the method adopts mature technology and general materials which can be purchased in the market, has small technical difficulty, easy realization of guarantee conditions and convenient copying and application, and only needs to set relevant target interval parameters correspondingly according to the performance index data and the working mode of the detected radar. The water area condition of the detection environment is wide, the detection equipment is convenient to carry and build a scene, and better detection use conditions are provided;
(3) has better economic, technical and use benefits
The method effectively solves the detection work of the radar composite detection actual capability which can not be finished in the laboratory environment, the detected radar actual detection capability has important significance, on one hand, the method can help to find the problems in the aspects of radar technology design and process manufacturing, and definitely improve the direction, on the other hand, the method can also provide a targeted use method suggestion for a user, and the effective technical performance of the radar is exerted to the maximum extent. Finally, the invention does not need a large amount of special equipment investment, and a plurality of guarantee conditions can be solved by means of market renting, thereby having good comprehensive use benefits.
Drawings
FIG. 1 is a schematic structural view of a corner reflector of the present invention;
FIG. 2 is a layout of corner reflector groups on a support;
FIG. 3 is a schematic view of the installation of a corner reflector and the coverage of reflected electromagnetic signals;
FIG. 4 is a schematic diagram of detection capability detection in the active radar mode;
FIG. 5 is a schematic diagram showing the lateral width of a horizontal beam of a radar in an active mode;
FIG. 6 is a schematic diagram of the detection capability of the radar in a passive operating mode;
FIG. 7 is a schematic diagram of the lateral width of a radar horizontal beam in a passive mode;
FIG. 8 is a schematic diagram of the detection capability of the radar in a composite working mode;
FIG. 9 is a schematic diagram of the lateral width of a radar horizontal beam in the composite operation mode;
FIG. 10 is a schematic diagram of a radar detecting a target maneuvering path within a target effective detection range;
FIG. 11 is a schematic diagram of a maneuvering path of a target M detected by a radar through the dynamic azimuth-resolved tracking capability of the target.
In the figure: 1. a radar; 2. a corner reflector; 3. and (4) a triangular bracket.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
Example 1
The method for detecting the composite detection target capability of the radar comprises the following steps:
1. detecting environmental requirements
The device is arranged in water surface environments such as sea surface or lake surface and the like, and requires a wide water surface area, and no other water surface ships, island targets or relevant electromagnetic equipment devices exist within the range of 15-30Km around the device;
2. detection equipment configuration
The detection work needs to be provided with a simulation detection target, electromagnetic radiation equipment loaded by the simulation detection target and related equipment, and the related matched equipment comprises the following equipment:
(1) simulation target
Three overwater moving targets needing radar simulation detection are arranged in the detection, namely a target M, a target A and a target B, the three targets are simulated by adopting a small boat, a corner reflector is additionally arranged on the boat, RCS is improved, the 800-plus-9000T ship target is simulated, and an electromagnetic radiation source is additionally arranged to simulate radar equipment loaded by the target, so that the performance requirement of the detected radar on the detected target is met;
the small-size ships and light boats adopt the small-size traffic boat of big lian European Lun ship industry Limited company production, and this boat utensil possesses the advantage that the navigability is good, maneuvering speed is fast, the manipulation is nimble, repacking and guarantee ability are strong, and the key nature index is: the total length is as follows: 23m, width of the ship: 6m, depth of mold: 2.76m, draft: 1.09 m, speed: 30Kn, full load displacement: 52.5T, power main engine: 2x CAT C321081 kw (1450bhp) @2300rpm, auxiliary generator: 2x kohler 25 kw;
the corner reflector is annular and is formed by continuously connecting a plurality of unit corner reflectors 2 in series on a circumferential support with the diameter of 2.5m, the corner reflectors 2 are trihedrons formed by equilateral triangles, the circumferential support is welded on the top of a triangular support 3, the height of the triangular support 3 is 3m, and the bottom of the triangular support 3 is welded on a deck at the top of a boat;
the method comprises the following steps that a target A and a target B are respectively additionally provided with corner reflectors of RCS lower limit indexes and RCS upper limit indexes of a radar to be detected, a target M is additionally provided with a corner reflector of RCS mean indexes of the radar to be detected, the RCS of the corner reflector depends on a unit corner reflector 2, a unit corner reflector 2RCS calculation model is shown as the following formula, the side length a of the unit corner reflector 2 is determined through calculation of the model, the sigma value in the formula corresponds to the RCS, and the lambda is the wavelength of the radar to be detected;
wherein: sigma is radar RCS, lambda is radar electromagnetic wavelength, and a is obtained;
the electromagnetic radiation source adopts a navigation radar, the navigation radar is selected according to the size of a small boat, and the target A, the target M and the target B are respectively selected according to small, medium and large ships;
the radar antenna of the electromagnetic radiation source is arranged at the highest position of a main mast of a boat, the radar antenna is arranged on an antenna support, and then the antenna support (including the whole antenna) is welded at the top end of the main mast;
the navigation radar is a navigation radar for obtaining IMO and identifying common ancient Field (FURUNO) ships;
the navigation radar model of the target M is FR-1505, the working frequency is 9410 +/-30 MHz, the maximum power is 6Kw, the working distance is 0.25-24 nm, the radiation source antenna XN12AF4ft, the wave beam is H1.8 degrees, the V25 degrees and the rotating speed is 24-40 rpm;
the navigation radar model of the target A is FR-2117, the working frequency is 9410 +/-30 MHz, the maximum power is 12W, the working distance is 0.5-35 nm, the radiation source antenna XN20AF4ft, the wave beam is H1.23 degrees, V20 degrees and the rotating speed is 24 rpm;
the navigation radar model of the target B is FR-2827W, the working frequency is 9410 +/-30 MHz, the maximum power is 25Kw, the working distance is 0.5-48 nm, the radiation source antenna XN24AF4ft, the wave beam is H1.95 degrees, V20 degrees and the rotating speed is 21 rpm;
3. detecting the detection capability of the radar:
detecting the detection capability of the radar in an active mode, a passive mode and a composite mode respectively according to the working mode of the radar with the composite detection capability;
3.1 detection of detection Capacity in Radar active mode
The active mode is that the detected radar actively emits electromagnetic waves outwards and then receives the reflected echo of the target to complete the detection, identification and tracking of the target, and the RCS and dynamic spacing change of the target can influence the detection capability in the active mode;
3.1.1 detection scenario configuration
The active effective detection distance of the radar 1 to be detected is D1, the target M is arranged in the effective detection distance, the targets A and B are arranged on a vertical line of a connecting line of the radar 1 and the target M, the targets A and B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a1, the distance between the target B and the target M is B1, and the distance is used as the initial situation state of radar detection;
the values of a1 and b1 are 2-3 times of the lateral width Lc corresponding to the D1 and the radar horizontal beam angle alpha, and the Lc is obtained by the following calculation formula
In the formula, alpha is a radar beam angle, and Dc takes the value D1;
3.1.2 detection implementation and result determination
According to a design scene, the active detection mode is to detect the effective detection ranges of a target A, a target B and a target M and the azimuth resolution capability of the target M under the normal working condition of the radar, and the specific method comprises the following steps:
and (3) detecting the effective detection range of the target:
the target A, the target B and the target M respectively use the initial positions of the targets as the circle centers, the connection directions of the targets and the radar 1 are respectively used as long axes to carry out the maneuvering of the elliptical flight path, the short axis of the elliptical flight path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance detected and found by the radar 1 on each target;
and (3) detection results: the longer the farthest distance of the radar 1 to the target A and the target B is, the better the active detection capability of the radar 1 is, and the larger the detection range of the radar 1 to the target M is, the stronger the capability of the radar 1 to find a preselected target is, so that the active effective detection capability of the radar 1 to a limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the target A, B is fixed in place, the target M is in an inverted 8-shaped maneuver taking the initial position as the center and the AB connection direction as the flight path, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the target M and the target A and the target B detected by the radar 1 is, the stronger the active detection target resolution tracking capability of the radar 1 is;
3.2 detection capability detection in Passive Radar mode
The radar passive mode is that the detected radar does not emit electromagnetic waves and only receives the electromagnetic waves of a target radar radiation source to complete target detection identification and tracking work, equipment used by the detected radar passive mode is independently configured, and the performance of the target radar radiation source and the change of the distance between target maneuvering and dynamic positions have great influence on the detection capability;
3.2.1 detection scenario configuration
The passive effective detection distance of the radar 1 to be detected is D2, the target M is arranged in the effective detection distance, the targets A and B are arranged on a vertical line of a connecting line of the radar 1 and the target M, the targets A and B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a2, the distance between the target B and the target M is B2, and the distance is used as the initial situation state of radar detection;
the values a2 and B2 are 2-3 times of the lateral width Lc corresponding to the D2 and the mean value of the horizontal beam angle alpha of the target A and the target B and the navigation radar, and the Lc is obtained by adopting the following calculation formula
In the formula, alpha is a horizontal beam angle of a target A, B and a navigation radar, and Dc takes a value D2;
3.2.2 implementation of the assay and determination of the results
According to a design scene, an active detection mode is mainly used for detecting an A, B, M target effective detection range and M azimuth resolution capacity under the normal working condition of a radar, and the specific method is as follows:
and (3) detecting the effective detection range of the target:
starting the target A and the target B navigation radar in the whole process, wherein the target A, the target B and the target M respectively use respective initial positions as circle centers and use the respective connecting line direction with the radar 1 as a long axis to carry out elliptical path maneuvering, the short axis of the elliptical path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance which are detected by the radar 1 through electromagnetic wave radiation of each target navigation radar;
and (3) detection results: the longer the farthest distance of the radar 1 to the target A and the target B is, the better the passive detection capability of the radar 1 is, and the larger the detection range of the radar 1 to the target M is, the stronger the capability of the radar 1 to passively detect and find the preselected target is, so that the effective passive detection capability of the radar 1 to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the target A, the target M and the target B navigation radar are started in the whole process, the target A and the target B are in situ fixed, the target M performs inverted 8-shaped maneuvering by taking the initial position as the center and the AB connection direction as the air route, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the target M and the target A and the target B is detected by the radar 1, the stronger the passive detection target resolution tracking capability of the radar 1 is;
3.3 detection capability detection under composite mode of radar
The radar composite mode is that the active channel and the passive channel of the radar to be detected work simultaneously, and the target identification and tracking work can be completed only after the active channel and the passive channel lock the target simultaneously. In this mode, both the RCS of the target and its loaded radar radiation source device have an effect on the detection capability.
3.3.1 detection scenario configuration
The composite effective detection distance of the radar 1 to be detected is D3, a target M is arranged in the effective detection distance, a target A and a target B are arranged on a vertical line of a connecting line of the radar 1 and the target M, the target A and the target B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a3, the distance between the target B and the target M is B3, and the target A and the target B are used as the initial situation state of radar detection;
the values a3 and B3 are 2-3 times of the lateral width Lc corresponding to the D3 and the horizontal beam angle mean value alpha of the target A and the target B which are additionally provided with the navigation radar, and the Lc is obtained by adopting the following calculation formula
In the formula, alpha is a horizontal beam angle of a target A, B and a navigation radar, and Dc takes a value D3;
3.3.2 detection implementation and result determination
According to a design scene, a composite detection mode is mainly used for detecting the effective detection ranges of a target A, a target B and a target M and the azimuth resolution capability of the target M under the normal working condition of the radar, and the specific method is as follows.
And (3) detecting the effective detection range of the target:
the navigation radar of the target A, the target M and the target B is started in the whole process, the target A, the target B and the target M respectively use the initial positions of the targets as the circle centers and use the connection directions of the targets and the radar 1 as long axes to carry out the maneuvering of the elliptical flight path, the short axis of the elliptical flight path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance which are found by the radar 1 in the composite detection of the targets;
and (3) detection results: the longer the farthest distance of the radar 1 to the detection of the target A and the target B is, the better the composite detection capability of the radar 1 is, the larger the detection range of the radar 1 to the target M is, the stronger the composite detection capability of the radar 1 to find the preselected target is, and therefore the composite effective detection capability of the radar 1 to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the first detection is that a target A, a target M and a target B navigation radar are started in the whole process, the target A and the target B are not moved in situ, the target M performs inverted 8-shaped maneuvering by taking an initial position as a center and taking an AB connecting line direction as a flight line, and in the process that the target M approaches the target A and the target B, the radar 1 detects that the resolution distance between the target M and the target A and the target B is smaller, which indicates that the composite detection target resolution tracking capability of the radar 1 is stronger;
the second detection is that the target A and the target B navigation radar are shut down in the whole process, the target M navigation radar is started in the whole process, the target A and the target B are not moved in situ, the target M performs inverse 8-shaped maneuvering by taking the initial position as the center and the AB connecting line direction as the air route, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the target M and the target A and the target B detected by the radar 1 is, the stronger the composite detection target resolution tracking capability of the radar 1 is;
example 2
The method for detecting the composite detection target capability of the radar comprises the following steps:
1. setting of detection conditions
(1) The main technical indexes of the tested radar W1 are as follows:
the main performance indexes of the radar to be detected are that the working wave band is X wave band, the frequency f is 9.3GHz, the working modes are three modes of active, passive and composite, the transmitting power is 50Kw, the target water discharge is not less than 800T, and the target RCS is 500-3000 m-channel2The effective detection range is 8-40 Km.
(2) Detecting the setting of corollary equipment:
the detection device is configured as described previously, wherein the unit reflector edge length dimensions of the corner reflectors are determined as follows.
Measured radar wavelength:
Side length a of corner reflector 2:
setting sigma according to known conditionsA＝500，σM＝2000，σB3000, λ c/f 3.22, and the above formula is substituted to obtain: a isA＝592cm，aM＝838cm，aB＝928cm
2. Test implementation and result determination
(1) Detection capability detection in radar active mode
According to the effective index range detected by the detected radar, D1 is set to be 15Km, the horizontal beam angle alpha is set to be 1.8 degrees, a1 and b1 are taken according to 3 times of Lc, and Lc is calculated and determined by the following formula.
This results in a1 ═ b1 ═ 1.44Km
And constructing a detection scene according to the method, and selecting the D1, a1 and b1 parameter configuration determined by calculation to detect the initial situation.
Firstly, detecting the effective detection range of a target:
and respectively selecting a target A, a target M and a target B according to the method to carry out elliptical path maneuver, and measuring the actual detection distances of the radar to the three targets, wherein the data are as follows.
The maximum distance of detection of the object a is 18 Km;
the maximum distance of detection of the target M is 24Km, and the minimum distance is 7.5 Km;
the maximum distance of detection of the target B is 32 Km;
secondly, detecting the dynamic azimuth resolution tracking capability of the target:
the target A and the target B are fixed in place, the target M performs the maneuver of the inverted 8-shaped flight path according to the method, the resolving power of the radar to the three targets is measured, and the data are as follows.
The minimum distance of dynamic resolution of the target M and the target A is 118M;
the minimum distance of dynamic resolution of the target M and the target B is 245M;
(iii) result judgment
From the measured data, the detected radar W1 has a wider detection range on the target in an active mode, particularly has better detection capability on small targets, has a larger detection range on standard targets, and has the maximum detection distance not reaching the design index which is limited by the configuration height of the detected radar and completely reaches the farthest distance index after being converted by 1.2 times of the normal antenna height, so that the actual detection capability of the radar reaches the design requirement.
(2) Detection capability detection in radar passive mode
According to the effective index range detected by the detected radar, D2 is set to be 20Km, the horizontal beam angle is the average value of the target A and the target B which are additionally provided with navigation radars, namely alpha is (1.23+1.95)/2 is 1.59 degrees, a2 and B2 take values according to 3 times Lc, and Lc is calculated and determined by the following formula.
This results in a2 ═ b2 ═ 1.68Km
And constructing a detection scene according to the method, and selecting the D2, a2 and b2 parameter configuration determined by calculation to detect the initial situation.
Firstly, detecting the effective detection range of a target:
and additionally installing navigation radars for whole-course work on the target A, the target M and the target B according to the method, respectively carrying out elliptical route maneuvering, and measuring the actual detection distances of the radars to the three targets, wherein the data are as follows.
The maximum distance of detection of the object a is 21 Km;
the maximum distance of detection of the target M is 32Km, and the minimum distance is 10.4 Km;
the maximum distance of detection of the object B is 37 Km;
secondly, detecting the dynamic azimuth resolution tracking capability of the target:
the target A and the target B are fixed in place, the target M performs the maneuver of the inverted 8-shaped flight path according to the method, the resolving power of the radar to the three targets is measured, and the data are as follows.
The minimum distance of dynamic resolution of target M from target a is 175M;
the minimum distance of dynamic resolution of the target M and the target B is 328M;
(iii) result judgment
The measured data show that the detection range of the target under the passive mode of the measured radar W1 is wider, and the measured data completely reach the maximum distance index after being converted by 1.2 times of the radar height; meanwhile, the dynamic direction resolution distance of the radar is smaller, although the dynamic direction resolution distance is larger than that of the radar in an active mode, the radar is normal due to the difference of equipment performance, and therefore the passive channel equipment of the radar has good performance and meets the design requirement.
(3) Detection capability detection in radar complex mode
According to the effective index range detected by the detected radar, D2 is set to be 20Km, the horizontal beam angle is the average value of the target A and the target B which are additionally provided with navigation radars, namely alpha is (1.23+1.95)/2 is 1.59 degrees, a2 and B2 take values according to 3 times Lc, and Lc is calculated and determined by the following formula.
This results in a2 ═ b2 ═ 1.68Km
And constructing a detection scene according to the method, and selecting the D2, a2 and b2 parameter configuration determined by calculation to detect the initial situation.
Firstly, detecting the effective detection range of a target:
and additionally installing navigation radars for whole-course work on the target A, the target M and the target B according to the method, respectively carrying out elliptical route maneuvering, and measuring the actual detection distances of the radars to the three targets, wherein the data are as follows.
The maximum distance of detection of the object a is 19 Km;
the maximum distance of detection of the target M is 30Km, and the minimum distance is 9.2 Km;
the maximum distance of detection of the target B is 35 Km;
secondly, detecting the dynamic azimuth resolution tracking capability of the target:
the target A and the target B are fixed in place, the target M performs the maneuver of the inverted 8-shaped flight path according to the method, the resolving power of the radar to the three targets is measured, and the data are as follows.
The minimum distance of dynamic resolution of the target M and the target A is 133M;
the minimum distance of dynamic resolution of target M and target B is 274M;
(iii) result judgment
The measured data show that the detection range of the target under the composite mode of the detected radar W1 is wide, the dynamic azimuth resolution distance of the radar is small, the overall data are distributed between the data in the active mode and the data in the passive mode, the equipment is normal, and although the data index is properly reduced, the anti-interference capability of the radar can be effectively improved by the mode, so that the composite detection performance of the radar is good, and the design requirement is met.
Comprehensive detection shows that the actual detection performance of the detected radar W1 is good under three working modes, each index reaches design index data, the working harmony of equipment modules is good under various modes, and the comprehensive performance is on the top level.
Example 3
The method for detecting the composite detection target capability of the radar comprises the following detection steps:
1. setting of detection conditions
In this application example, the detection radar is set to be W2, and the radar performance index and the detection condition are all set to be the same as example 1.
2. Test implementation and result determination
Since the detected radar and the detection condition are the same as the example one, the detection implementation process is also consistent, and only the judgment of the detection result is given here.
(1) Detection capability detection in radar active mode
Firstly, detecting the effective detection range of a target:
the maximum distance of detection of the object a is 17 Km;
the maximum distance of detection of the target M is 21Km, and the minimum distance is 10 Km;
the maximum distance of detection of the target B is 31 Km;
secondly, detecting the dynamic azimuth resolution tracking capability of the target:
the minimum distance of dynamic resolution of the target M and the target A is 123M;
the minimum distance of dynamic resolution of the target M and the target B is 257M;
(iii) result judgment
It can be seen from the above measured data that the detection range of the target under the active mode of the detected radar W2 is normal, and after the conversion is 1.2 times of the normal antenna height, the maximum distance index is basically reached, so that the radar active channel works well, and the actual detection capability meets the design requirement.
(2) Detection capability detection in radar passive mode
Firstly, detecting the effective detection range of a target:
the maximum distance of detection of the object a is 15 Km;
the maximum distance of detection of the target M is 18Km, and the minimum distance is 6 Km;
the maximum distance of detection of the target B is 24 Km;
secondly, detecting the dynamic azimuth resolution tracking capability of the target:
the minimum distance of dynamic resolution of the target M and the target A is 151M;
the minimum distance of dynamic resolution of the target M and the target B is 314M;
(iii) result judgment
The measured data show that the detection range of the detected radar W1 to the target in the passive mode is smaller, even smaller than the detection range in the active mode, and the detection range greatly deviates from the index requirement, which indicates that the radar passive channel equipment is abnormal and does not meet the design requirement.
(3) Detection capability detection in radar complex mode
Firstly, detecting the effective detection range of a target:
the maximum distance of detection of the object a is 13.6 Km;
the maximum distance of detection of the target M is 27Km, and the minimum distance is 8 Km;
the maximum distance of detection of the object B is 24.3 Km;
secondly, detecting the dynamic azimuth resolution tracking capability of the target:
the minimum distance of dynamic resolution of target M from target a is 136;
the minimum distance of dynamic resolution of the target M and the target B is 301M;
(iii) result judgment
The measured data show that the detection range of the target in the composite mode of the detected radar W1 is smaller, the dynamic azimuth resolution distance is slightly larger, and the normal work of the composite channel is directly influenced due to the fact that the passive channel works abnormally, and the design requirement is not met.
The comprehensive detection shows that the actual detection performance of the detected radar W2 is poor under the other two working modes except the active mode, the design index requirement is not met, the working index of the passive channel is greatly reduced, the performance of equipment devices is problematic, the product quality is defective, and the comprehensive performance of the radar is unqualified.
The method for detecting the composite detection capability of the radar is an effective means for improving the capability of the radar for detecting, identifying and tracking the target in a complex environment, creates good conditions for the radar to carry out automatic information processing of the situation of the detected target, and is one of the directions for improving the comprehensive technical performance of the radar at present.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A method for detecting the composite detection target capability of a radar is characterized by comprising the following detection methods:
1) detecting environmental requirements
The device is arranged in the water surface environment on the sea surface or the lake surface, the water surface area is required to be wide, and no other water surface ships, island targets or relevant electromagnetic equipment devices exist within the range of 15-30Km on the periphery;
2) equipment configuration of detection equipment
The detection work needs to be provided with a simulation detection target, electromagnetic radiation equipment loaded by the simulation detection target and related equipment, and the related matched equipment comprises the following equipment:
three overwater moving targets needing radar simulation detection are arranged in the detection, namely a target M, a target A and a target B, the three targets are simulated by adopting a small boat, a corner reflector is additionally arranged on the boat, RCS is improved, the 800-plus-9000T ship target is simulated, and an electromagnetic radiation source is additionally arranged to simulate radar equipment loaded by the target, so that the performance requirement of the detected radar on the detected target is met;
3) detecting the radar detection capability:
detecting the detection capability of the radar in an active mode, a passive mode and a composite mode respectively according to the working mode of the radar with the composite detection capability;
3.1) detection of detection Capacity in Radar active mode
The active mode is that the detected radar actively emits electromagnetic waves outwards and then receives the reflected echo of the target to complete the detection, identification and tracking of the target, and the RCS and dynamic spacing change of the target can influence the detection capability in the active mode;
3.1.1) detection scenario configuration
The active effective detection distance of the radar to be detected is D1, the target M is arranged in the effective detection distance, the target A and the target B are arranged on a vertical line of a connecting line of the radar and the target M, the target A and the target B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a1, the distance between the target B and the target M is B1, and the distance is used as the initial situation state of the radar detection;
the values of a1 and b1 are 2-3 times of the lateral width Lc corresponding to D1 and the radar horizontal beam angle alpha, and Lc is obtained by adopting the following calculation formula:
in the formula, alpha is a radar beam angle, and Dc takes the value D1;
3.1.2) implementation of the test and determination of the results
According to a design scene, the active detection mode is to detect the effective detection ranges of a target A, a target B and a target M and the azimuth resolution capability of the target M under the normal working condition of the radar, and the specific method comprises the following steps:
and (3) detecting the effective detection range of the target:
the target A, the target B and the target M respectively use the initial positions of the targets as circle centers, the connection directions of the targets and the radar are respectively used as long axes to carry out elliptical line maneuvering, the short axis of the elliptical line is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance detected and found by the radar on each target;
and (3) detection results: the longer the farthest distance of the radar to the target A and the target B is, the better the active detection capability of the radar is, and the larger the detection range of the radar to the target M is, the stronger the capability of the radar to find a preselected target is, so that the active effective detection capability of the radar to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the target A, B is fixed in place, the target M performs inverse 8-shaped maneuvering by taking the initial position as the center and the AB connection direction as the flight path, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the radar detection target M and the target A and the target B is, the stronger the active detection target resolution tracking capability of the radar is;
3.2) detection capability detection in the Passive mode of Radar
The radar passive mode is that the detected radar does not emit electromagnetic waves and only receives the electromagnetic waves of a target radar radiation source to complete target detection identification and tracking work, equipment used by the detected radar passive mode is independently configured, and the performance of the target radar radiation source and the change of the distance between target maneuvering and dynamic positions have great influence on the detection capability;
3.2.1) detection scenario configuration
The passive effective detection distance of the radar to be detected is D2, the target M is arranged in the effective detection distance, the targets A and B are arranged on a vertical line of a connecting line of the radar and the target M, the targets A and B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a2, the distance between the target B and the target M is B2, and the distance is used as the initial situation state of the radar detection;
the values a2 and B2 are 2-3 times of the lateral width Lc corresponding to the D2 and the mean value of the horizontal beam angle alpha of the target A and the target B and the navigation radar, and the Lc is obtained by adopting the following calculation formula
In the formula, alpha is a horizontal beam angle of a target A, B and a navigation radar, and Dc takes a value D2;
3.2.2) implementation of the test and determination of the results
According to a design scene, a passive detection mode is mainly used for detecting an A, B, M target effective detection range and M azimuth resolution capacity under the normal working condition of a radar, and the specific method is as follows:
and (3) detecting the effective detection range of the target:
the target A, the target B and the target M are started in the whole navigation radar, the target A, the target B and the target M respectively use respective initial positions as circle centers and use the respective connecting line direction with the radar as a major axis to make an elliptical path maneuver, the minor axis of the elliptical path is 1/3 of the length of the major axis, and the length of the major axis is the difference between the farthest distance and the nearest distance which are detected by the radar through radiating electromagnetic waves to each target navigation radar;
and (3) detection results: the longer the farthest distance of the radar to the target A and the target B is, the better the passive detection capability of the radar is, and the larger the detection range of the radar to the target M is, the stronger the capability of the radar to passively detect and find the preselected target is, so that the effective passive detection capability of the radar to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the target A, the target M and the target B navigation radar are started in the whole process, the target A and the target B are in situ fixed, the target M performs inverted 8-shaped maneuvering by taking the initial position as the center and the AB connecting line direction as the air line, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the radar detection target M and the target A and the target B is, the stronger the radar passive detection target resolution tracking capability is;
3.3) detection capability detection in the Radar Complex mode
The radar compound mode is that the active channel and the passive channel of the radar to be detected work simultaneously, and the target identification and tracking work can be completed only after the active channel and the passive channel lock the target simultaneously; the RCS of the target and the radar radiation source equipment loaded by the target in the composite mode influence the detection capability;
3.3.1) detection scenario configuration
The composite effective detection distance of the radar to be detected is D3, the target M is arranged in the effective detection distance, the target A and the target B are arranged on a vertical line of a connecting line of the radar and the target M, the target A and the target B are arranged on the left side and the right side of the target M, the distance between the target A and the target M is a3, the distance between the target B and the target M is B3, and the distance is used as the initial situation state of the radar detection;
the values a3 and B3 are 2-3 times of the lateral width Lc corresponding to the D3 and the horizontal beam angle mean value alpha of the target A and the target B which are additionally provided with the navigation radar, and the Lc is obtained by adopting the following calculation formula
In the formula, alpha is a horizontal beam angle of a target A, B and a navigation radar, and Dc takes a value D3;
3.3.2) implementation of the test and determination of the results
According to a design scene, a composite detection mode is mainly used for detecting the effective detection ranges of a target A, a target B and a target M and the azimuth resolution capability of the target M under the normal working condition of the radar, and the specific method comprises the following steps:
and (3) detecting the effective detection range of the target:
the target A, the target M and the target B navigation radar are started in the whole process, the target A, the target B and the target M respectively use the initial positions as the circle centers and use the connection directions of the targets and the radar as long axes to make an elliptical path maneuver, the short axis of the elliptical path is 1/3 of the length of the long axis, and the length of the long axis is the difference between the farthest distance and the nearest distance which are found by the radar in composite detection on each target;
and (3) detection results: the longer the farthest distance of the radar to the target A and the target B is, the better the composite detection capability of the radar is, the larger the detection range of the radar to the target M is, the stronger the capability of the radar to find the preselected target in composite detection is, and therefore the composite effective detection capability of the radar to the limited target can be obtained;
and (3) detecting the dynamic orientation resolution tracking capability of the target:
the first detection is that a target A, a target M and a target B navigation radar are started in the whole process, the target A and the target B are not moved in situ, the target M performs inverted 8-shaped maneuvering by taking an initial position as a center and taking an AB connecting line direction as a flight line, and in the process that the target M approaches the target A and the target B, the smaller the resolution distance between the radar detection target M and the target A and the target B is, the stronger the composite detection target resolution tracking capability of the radar is;
and in the second detection, the target A and the target B navigation radar are shut down in the whole process, the target M navigation radar is started in the whole process, the target A and the target B are not moved in situ, the target M performs inverse 8-shaped maneuvering by taking the initial position as the center and the AB connecting line direction as the air route, and the smaller the resolution distance between the radar detection target M and the target A and the target B is in the process of approaching the target M to the target A and the target B, the stronger the composite detection target resolution tracking capability of the radar is.
2. The method for detecting the composite detection target capability of the radar according to claim 1, wherein in the step 2) and the equipment configuration of the detection device, the small boat is a small traffic boat, and the boat has the advantages of good navigability, high maneuvering speed, flexible operation, and strong refitting and guaranteeing capability, and the main indexes are as follows: the total length is as follows: 23m, width of the ship: 6m, depth of mold: 2.76m, draft: 1.09 m, speed: 30Kn, full load displacement: 52.5T, power main engine: 2x CAT C321081 kw @2300rpm, auxiliary generator: 2x kohler 25 kw.
3. The method for detecting the composite target detection capability of the radar according to claim 1, wherein in the step 2) and the equipment configuration of the detection device, the corner reflector is annular and is formed by continuously connecting a plurality of unit corner reflectors in series on a circumferential support with the diameter of 2.5m, the corner reflector (2) is a trihedron formed by equilateral triangles, the circumferential support is welded on the top of the triangular support, the height of the triangular support is 3m, and the bottom of the triangular support is welded on a deck at the top of a boat.
4. The method for detecting the composite target detection capability of the radar according to claim 1, wherein in the step 2) and the equipment configuration of the detection device, the targets a and B are respectively provided with corner reflectors of RCS lower limit indexes and RCS upper limit indexes of the radar to be detected, the target M is provided with a corner reflector of RCS mean indexes of the radar to be detected, RCS of the corner reflectors depends on unit corner reflectors, an RCS calculation model of the unit corner reflectors is as follows, the side length a of the unit corner reflectors is determined by calculation of the model, and a value in the formula corresponds to RCS and λ is the wavelength of the radar to be detected;
wherein: and sigma is radar RCS, and lambda is radar electromagnetic wavelength, and a is obtained.
5. The method for detecting the composite detection target capability of the radar according to claim 1, wherein in the step 2) and the equipment configuration of the detection device, a navigation radar is adopted as the electromagnetic radiation source, the navigation radar is selected according to the size of a small boat, and the navigation radar is selected according to three types of ships, namely a small ship, a medium ship and a large ship;
the radar antenna of the electromagnetic radiation source is arranged at the highest position of a main mast of a boat, the radar antenna is arranged on an antenna support, and then the antenna support is welded at the top end of the main mast;
the navigation radar model of the target M is FR-1505, the working frequency is 9410 +/-30 MHz, the maximum power is 6Kw, the working distance is 0.25-24 nm, the radiation source antenna XN12AF4ft, the wave beam is H1.8 degrees, the V25 degrees and the rotating speed is 24-40 rpm;
the navigation radar model of the target A is FR-2117, the working frequency is 9410 +/-30 MHz, the maximum power is 12W, the working distance is 0.5-35 nm, the radiation source antenna XN20AF4ft, the wave beam is H1.23 degrees, V20 degrees and the rotating speed is 24 rpm;
the navigation radar model of the target B is FR-2827W, the working frequency is 9410 +/-30 MHz, the maximum power is 25Kw, the working distance is 0.5-48 nm, the radiation source antenna XN24AF4ft, the wave beam is H1.95 degrees, the wave beam is V20 degrees, and the rotating speed is 21 rpm.
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