WO2017163716A1 - レーダ装置及び航跡表示方法 - Google Patents
レーダ装置及び航跡表示方法 Download PDFInfo
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- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/414—Discriminating targets with respect to background clutter
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- 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
- G01S7/04—Display arrangements
- G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
- G01S7/064—Cathode-ray tube displays or other two dimensional or three-dimensional displays using a display memory for image processing
- G01S7/066—Cathode-ray tube displays or other two dimensional or three-dimensional displays using a display memory for image processing with means for showing the history of the radar trails, e.g. artificial remanence
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- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
- G01S13/426—Scanning radar, e.g. 3D radar
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- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/538—Discriminating between fixed and moving objects or between objects moving at different speeds eliminating objects that have not moved between successive antenna scans, e.g. area MTi
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- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
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- 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
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- 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
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- 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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
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- 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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/933—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of aircraft or spacecraft
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- 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
- G01S7/04—Display arrangements
- G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
- G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
- G01S7/12—Plan-position indicators, i.e. P.P.I.
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- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/415—Identification of targets based on measurements of movement associated with the target
Definitions
- the present invention mainly relates to a radar device capable of displaying the acquired echo track.
- the radar apparatus of Patent Document 1 the track of another moving body is displayed on the radar image.
- a wake display method there are a true wake mode and a relative wake mode.
- the true track mode the echo track is displayed based on the absolute position of the acquired echo. Therefore, the true wake mode has an advantage that it is easy to grasp the behavior of another target from the displayed wake.
- the relative track mode the echo track is displayed based on the relative positional relationship with the own aircraft. Therefore, the relative wake mode has an advantage that it is easy to grasp a dangerous target that is approaching relatively close to the aircraft.
- the wake is displayed for all the acquired echoes, so the wake is also displayed for the echoes on land, for example.
- the wake is also displayed for echoes on land.
- the track of the land is displayed due to an error or a delay of the ship information such as the ship position and the heading.
- the echo on the land is large, many areas of the display screen are covered with the track of the land. As a result, the visibility of other echoes and wakes is reduced.
- the visibility of the echo trap and the wake is lowered.
- the present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a radar device capable of generating and displaying only necessary track data.
- a radar apparatus having the following configuration. That is, this radar apparatus includes an acquisition unit, an echo data generation unit, a storage unit, a wake data generation unit, and a display unit.
- the acquisition unit acquires an echo based on a reflected wave from a transmitted electromagnetic wave target.
- the echo data creation unit creates echo data indicating at least the position of the target based on the echo.
- the storage unit stores determination data set for each predetermined display area as to whether or not to newly create track data indicating the movement trajectory of the target.
- the wake data creation unit creates the wake data based on the echo and the determination data.
- the display unit displays the echo data and the wake data.
- the wake data creation unit maintains the presence of the wake data when the previously created wake data exists in an area where the wake data is not newly created.
- the determination data is updated every predetermined scan.
- the determination data is updated every predetermined sweep.
- the determination data is updated to a predetermined sweep, so that the determination accuracy can be further improved.
- the radar apparatus it is preferable that whether or not to newly create the wake data is determined in the determination data according to the type of the target.
- the determination data specifies an area where land echoes exist as an area where the wake data is not newly created.
- the determination data specifies an area where an echo of a moving target exists as an area where the wake data is newly created.
- Land wakes are less likely to be displayed, but rather reduce the visibility of other echoes. Therefore, by performing any of the above processes, the creation of land track data can be prevented, and the echo track of the moving target can be displayed.
- the radar apparatus it is preferable that whether or not to newly create the wake data is determined in the determination data according to the nature of the echo.
- the wake data indicates a relative position change of the echo with respect to the own aircraft.
- the change in the position is displayed as a wake even for a target that has not moved, so an unnecessary wake is displayed. Therefore, the effect that the wake can be displayed only on a part of the echoes can be exhibited more effectively.
- this wake display method includes an acquisition process, an echo data creation process, a determination data creation process, a wake data creation process, and a display process.
- acquisition step an echo is acquired based on the reflected wave from the transmitted electromagnetic wave target.
- echo data creation step echo data indicating at least the position of the target is created based on the echo.
- determination data creation step based on the echo, determination data in which whether or not to newly create wake data indicating the movement habit trajectory of the target is created for each predetermined display area is created.
- the wake data creation step the wake data is created based on the echo and the determination data.
- the display step the echo data and the wake data are displayed.
- FIG. 1 is a block diagram showing a configuration of a radar apparatus according to an embodiment of the present invention.
- the flowchart which shows the process which produces echo data and wake data.
- FIG. 1 is a block diagram showing the main configuration of a marine radar apparatus 1 according to this embodiment.
- FIG. 2 is a diagram showing a radar image on which echoes and wakes are displayed.
- the radar antenna 10 provided in the radar apparatus 1 can transmit a pulsed transmission wave (electromagnetic wave) generated by a magnetron and receives a reflected wave of the transmission wave as a reception signal.
- the transmission wave transmitted by the radar apparatus 1 is not limited to a pulse shape, and may be a continuous wave. Further, the transmission wave may be generated by a semiconductor element or the like without using a magnetron.
- the radar antenna 10 repeatedly transmits and receives transmission waves while rotating in a horizontal plane at a predetermined rotation period. Thereby, it is possible to detect 360 degrees around the ship in the horizontal plane.
- a received signal obtained by detection by the radar antenna 10 is output to the radar controller 20.
- the radar control device 20 generates a transmission wave by a magnetron and a transmission circuit (not shown) and processes a reception signal input from the radar antenna 10.
- each part of the radar control device 20 is specifically an FPGA or ASIC (not shown) included in the radar control device 20.
- an arithmetic processing unit such as a CPU.
- a reception signal (a signal including an echo) input from the radar antenna 10 is acquired by the acquisition unit 21 of the radar control device 20.
- the reception signal acquired by the acquisition unit 21 is input to the A / D conversion unit 22.
- the A / D converter 22 samples this signal, converts it into digital data of a plurality of bits, and outputs it to the sweep memory 23.
- the sweep memory 23 can store the received signal for one sweep in real time. “Sweep” refers to a series of operations from transmission of a transmission wave to transmission of the next transmission wave. “Reception signal for one sweep” refers to the next transmission wave after transmission. A reception signal acquired during a period until a transmission wave is transmitted. “Scan” refers to an operation in which the radar apparatus 1 acquires a series of received signals around the ship.
- the echo data creation unit 24 creates echo data which is data indicating the position of the target, the signal level of the echo, and the like based on the echo included in the received signal.
- the time taken from the transmission of the transmission wave to the return of the echo is proportional to the distance from the radar antenna 10 to the target. Therefore, the distance to the target can be obtained based on the time from when the transmission wave is transmitted until the reception signal is received. Further, the direction in which the target is present can be obtained based on the angle of the saddle antenna when the transmission wave is transmitted.
- the echo data creation unit 24 obtains the position of the target for the echo based on the echo included in the received signal.
- the echo data creation unit 24 obtains an echo signal level based on the amplitude of the received signal.
- the echo data creation unit 24 obtains the position of the target and the signal level of the echo, and creates echo data.
- the echo data creation unit 24 outputs the created echo data to the echo data image memory 25, the determination data creation unit 26, and the wake data creation unit 29.
- the echo data creation unit 24 creates echo data each time a received signal is input and outputs the echo data to each unit.
- the echo data image memory 25 is an image memory used for displaying the echo data created by the echo data creation unit 24. An image indicating the echo data stored in the echo data image memory 25 is output to the display unit 31.
- the display unit 31 is a liquid crystal display or the like, and is a raster scan type display device.
- the echo data created as described above is displayed on the display unit 31.
- Fig. 2 is an example of a radar image, and the center mark indicates the position of the ship.
- the echo 41 is an echo of another ship.
- the echo 42 is a land echo. Note that the position of the ship may be shifted from the center.
- the display unit 31 updates the display content every time echo data is input.
- the wake data creation unit 29 creates wake data based on the echo data input from the echo data creation unit 24.
- a wake is a movement locus (position change) of a target.
- the wake anchor data is data for displaying the movement trajectory of the target on the screen.
- the wake data creation unit 29 creates wake data each time new echo data is input, and outputs the wake data to the wake data image memory 30.
- the relative wake mode that displays the relative position change of the target with respect to the ship (own) as the wake
- the true wake that displays the absolute position change of the target as the wake.
- the relative wake mode the relative position change of the target with respect to the ship is displayed on the screen as a wake.
- the true wake mode the actual position change of the target is displayed on the screen as a wake regardless of the movement of the ship.
- an example of displaying a wake using the relative wake mode will be described, but the present invention can also be applied to the true wake mode.
- the wake data output from the tow wake data creation unit 29 is output to the wake data image memory 30.
- the track data image memory 30 is an image memory used for displaying the tow track data created by the track data creation unit 29.
- An image indicating the track data stored in the track data image memory 30 is output to the display unit 31.
- a wake 45 is displayed for the echo 41.
- the wake 45 is displayed so that the closer it is to the echo 41, the darker the color (that is, the lower the transparency). Thereby, a new wake can be displayed with emphasis over an old wake.
- This display is merely an example, and the hue may be changed so as to be closer to the Echo 41.
- the new wake and the old wake may be displayed in the same color (that is, the same hue, saturation, and lightness) without distinguishing.
- the radar apparatus 1 of the present embodiment performs control so that the wake 45 is displayed for the echo 41 of the other ship and the wake is not displayed for the land echo 42. .
- FIG. 3 is a flow chart showing processing for creating echo data and wake data.
- FIG. 4 is a table for explaining processing for creating wake data based on the result of echo land determination and the signal level of echo.
- FIG. 5 is a diagram showing transitions of echo data, determination data, wake data, and display data.
- the radar apparatus 1 includes a determination data creation unit 26, a storage unit 27, and a determination unit 28 as a configuration for displaying a wake only on echoes other than land.
- the drought determination data creation unit 26 creates determination data, which is data in which whether or not to newly create a wake for each predetermined display area (specifically, for each pixel).
- the storage unit 27 stores the determination data created by the determination data creation unit 26.
- the determination data may be a plurality of pixels as one unit of the heel display area.
- the determination unit 28 determines, for each display region (for each pixel), whether or not to newly display a wake based on the determination data in the storage unit 27.
- the acquisition unit 21 acquires a reception signal from the radar antenna 10 (acquisition step).
- the echo data creation unit 24 creates echo data based on the echo obtained by the obtaining unit 21 (S101, echo data creation step).
- the echo data created by the echo data creation unit 24 is output to the echo data image memory 25, the determination data creation unit 26, and the wake data creation unit 29 as described above.
- the echo soot data creation unit 24 sequentially creates echo data as shown in the first scan to the fourth scan in FIG.
- These echo data include an echo rod 41 of another ship and an echo 42 of land. The reason why the echo position on the land has moved to the bottom of the screen is because the ship has moved to the top of the screen.
- the determination data creation unit 26 updates the determination data based on the echo data before one scan and stores it in the storage unit 27 (S102, determination data creation step). Note that the determination data creation unit 26 may update the determination data based on the latest echo data rather than one scan before.
- the determination data of the present embodiment is data for preventing the wake data from being newly created for the echo of the land when the wake data is created. Is the data specifying the area indicating the land echo (that is, the area in which the wake data is not newly created).
- an area corresponding to the land echo 42 is specified in the echo data for the first scan.
- the echo data for the first scan is used as the second determination data for the scan because the wake data for the first scan is displayed for the first time in the radar image for the second scan. Therefore, in the determination data for the third scan, the echo pixel of the land for the second scan is specified.
- the determination data creation unit 26 obtains, for example, the magnitude of the echo, and determines that the echo is a land echo when the magnitude of the echo exceeds a predetermined threshold. In addition to the magnitude of the echo, the determination data kit generator 26 determines that the corresponding echo is a land echo when the echo moving speed (absolute speed) is equal to or less than a predetermined threshold. Also good.
- the method for determining whether the echo is a land echo or any other echo is arbitrary. For example, the above-mentioned determination can be made by comparing information on a map or chart and the absolute position of the echo.
- the determination data creation unit 26 updates the determination data stored in the storage unit 27 when creating new determination data based on the echo data before one scan.
- the determination data is updated every scan.
- the determination data is preferably updated after the wake data is created and before the next wake data is created (that is, every time the wake data is created).
- the update timing is arbitrary.
- the determination data may be updated every plural scans, or may be updated at a predetermined time interval.
- the determination data may be updated every predetermined sweep (one sweep or a plurality of sweeps).
- the timing at which the four data shown in FIG. 5 are created (updated) is arbitrary, and the respective data may not be created in synchronization.
- the storage unit 27 may be a non-volatile memory such as a flash memory (flash disk and memory card), a hard disk, or an optical disk, or may be a volatile memory such as a RAM.
- the determination unit 28 determines, for each area, whether or not to newly create wake data based on the echo data before one scan and the updated soot data for determination (S103, determination step). . Specifically, the determination unit 28 regards an echo in the dredging area specified by the determination data as a land echo. Conversely, the determination unit 28 regards an echo in an area not specified by the determination data as an echo other than land. In this way, it is possible to determine whether the echo data before one scan is a land echo or a non-land echo (that is, whether the echo data newly creates wake data).
- the wake data creation unit 29 creates wake data based on the echo data and the determination data (in this embodiment, the determination result of the determination unit 28) (S104, wake data generation step).
- the generated wake data is a wake data level (a level indicating the strength (color intensity, etc.) of displaying the wake data) for each scan. Reduce. That is, the newly created track data has the highest tow track data level (the color is darkest). After that, the track data level is lowered (scanned light) for each scan.
- the wake data creation unit 29 creates wake data based on the table of FIG. In FIG. 4, “land determination” and “echo signal level is not less than a predetermined level” are listed. “Land determination” is an echo that the determination unit 28 regards as an echo of the land. “The echo signal level is equal to or greater than a predetermined value” literally indicates that the echo signal level is equal to or greater than a predetermined value. In this case, if the wake is created when the echo signal level is low, the wake may be displayed in the noise. Therefore, the wake data is created when the echo signal level is greater than or equal to a predetermined value. This process is not essential. That is, instead of “the echo signal level is not less than a predetermined value”, “presence / absence of echo defect” may be used.
- the determination unit 28 does not create new track data and only lowers the previous track data level even if the echo signal level is greater than or equal to a predetermined level. . It should be noted that if the previous area does not include the last track data, no particular processing is performed.
- the value obtained by subtracting 1 from the previous track data level is the same as above.
- the new track data level In the third case from the top of the table in FIG. 4, that is, when the echo signal level is not less than a predetermined value instead of the land echo, new track data is created. In other words, new wake data is created for the area determined by the determination unit 28 as an echo other than land. In the fourth case from the top of the table of FIG. 4, that is, when the signal level of the echo is less than a predetermined threshold instead of the land echo, a value obtained by subtracting 1 from the previous track data level is set as the new track data level. .
- the display data in FIG. 5 is data displayed on the display unit 31.
- the display data is data in which echo data and wake data are superimposed.
- the echo data is displayed with priority.
- the radar apparatus 1 includes the acquisition unit 21, the echo data creation unit 24, the storage unit 27, the wake data creation unit 29, and the display unit 31.
- the acquisition collar 21 acquires an echo based on the reflected wave from the transmitted electromagnetic wave target (acquisition step).
- the echo data creation unit 24 creates echo data indicating at least the position of the target object based on the echo (echo data creation step). Based on this echo, determination data is created for each predetermined display area (in this embodiment, for each pixel) whether or not to newly create track data indicating the movement trajectory of the target (determination) Data creation step) and stored in the storage unit 27.
- the wake data creation unit 29 creates wake data based on the soot echo and the determination data (wake data creation step).
- the display unit 31 displays echo data and wake data (display process).
- the land echo is described as an example of the echo that does not newly create wake data, but the present invention can also be applied to an echo other than the land (a non-moving target such as a fishing gear or a channel buoy).
- a non-moving target such as a fishing gear or a channel buoy.
- the “region where there is no land echo” is set as “the region where the wake data can be newly created”.
- the “area where the echo of the moving target exists” may be set as “an area where wake dredging data can be newly created”.
- a predetermined condition is set based on the nature of the echo (movement speed, size, position, stability, etc.) instead of the type of target, and the area where the echo that satisfies the condition exists is designated as “track data. It can also be a “newly created area”.
- the echo stability means that the change in the signal level of the echo is small.
- whether or not to create new wake data may be determined based on both the target type and the nature of the echo.
- the storage unit 27 ⁇ stores determination data for one screen.
- the storage unit 27 only needs to store determination data for at least the pixels for which the determination unit 28 determines.
- the determination data for one screen may not be stored at the same time.
- the radar apparatus 1 can detect the Doppler speed of the target based on the Doppler frequency, it is determined whether or not the target is a moving target based on the Doppler speed and echo data sequentially input from the sweep memory 23 or the like. Even if it is performed sequentially, it is possible to create similar track data. Even in such a case, the determination data is temporarily stored for determination processing, and therefore the storage unit of the present invention exists.
- the present invention can also be applied to the true track mode.
- the land does not move in the true track mode, it is considered that the track is not displayed, but in reality, the track of echoes on the land is not detected even in the true track mode due to errors or delays of the direction sensor or position sensor (GPS receiver). Since it can be displayed, by using the present invention, it is possible to more reliably prevent the display of the echo track of the land.
- the radar antenna 10 transmits a transmission wave while rotating in the horizontal plane, but a radar device having a configuration that does not rotate the radar antenna 10 may be used.
- the radar antenna 10 does not need to be rotated if the configuration has antenna elements in the entire circumferential direction.
- detection is possible over 360 ° in the horizontal plane, but it may be configured to detect only a specific direction such as forward.
- the radar antenna 10 may have a transmitting antenna and a receiving antenna.
- the present invention can also be applied to a radar apparatus mounted on a moving body (for example, an aircraft) other than a ship.
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
10 レーダアンテナ
20 レーダ制御装置
21 取得部
22 A/D変換部
23 スイープメモリ
24 エコーデータ作成部
25 エコーデータ用画像メモリ
26 判定用データ作成部
27 記憶部
28 判定部
29 航跡データ作成部
30 航跡データ用画像メモリ
31 表示部
41,42 エコー
45 航跡
Claims (11)
- 送信した電磁波の物標からの反射波に基づいてエコーを取得する取得部と、
前記エコーに基づいて、少なくとも物標の位置を示すエコーデータを作成するエコーデータ作成部と、
前記エコーに基づいて、物標の移動軌跡を示す航跡データを新たに作成するか否かが所定の表示領域毎に設定された判定用データを記憶する記憶部と、
前記エコーと、前記判定用データと、に基づいて、前記航跡データを作成する航跡データ作成部と、
前記エコーデータ及び前記航跡データを表示する表示部と、
を備えることを特徴とするレーダ装置。 - 請求項1に記載のレーダ装置であって、
前記航跡データ作成部は、前記航跡データを新たに作成しない領域に、以前に作成した前記航跡データが存在するときは、当該航跡データの存在を維持することを特徴とするレーダ装置。 - 請求項1又は2に記載のレーダ装置であって、
前記判定用データが所定スキャン毎に更新されることを特徴とするレーダ装置。 - 請求項1又は2に記載のレーダ装置であって、
前記判定用データが所定スイープ毎に更新されることを特徴とするレーダ装置。 - 請求項1から4までの何れか一項に記載のレーダ装置であって、
前記判定用データでは、物標の移動軌跡を示す航跡データを新たに作成するか否かが前記表示部の画素毎に設定されていることを特徴とするレーダ装置。 - 請求項1から5までの何れか一項に記載のレーダ装置であって、
前記判定用データでは、物標の種類に応じて、前記航跡データを新たに作成するか否かが定められていることを特徴とするレーダ装置。 - 請求項6に記載のレーダ装置であって、
前記判定用データでは、前記航跡データを新たに作成しない領域として、陸地のエコーが存在する領域が特定されていることを特徴とするレーダ装置。 - 請求項6に記載のレーダ装置であって、
前記判定用データでは、前記航跡データを新たに作成する領域として、移動物標のエコーが存在する領域が特定されていることを特徴とするレーダ装置。 - 請求項1から8までの何れか一項に記載のレーダ装置であって、
前記判定用データでは、エコーの性質に応じて、前記航跡データを新たに作成するか否かが定められていることを特徴とするレーダ装置。 - 請求項1から9までの何れか一項に記載のレーダ装置であって、
前記航跡データが、自機に対するエコーの相対的な位置変化を示すことを特徴とするレーダ装置。 - 送信した電磁波の物標からの反射波に基づいてエコーを取得する取得工程と、
前記エコーに基づいて、少なくとも物標の位置を示すエコーデータを作成するエコーデータ作成工程と、
前記エコーに基づいて、物標の移動軌跡を示す航跡データを新たに作成するか否かが所定の表示領域毎に設定された判定用データを作成する判定用データ作成工程と、
前記エコーと、前記判定用データと、に基づいて、前記航跡データを作成する航跡データ作成工程と、
前記エコーデータ及び前記航跡データを表示する表示工程と、
を含むことを特徴とする航跡表示方法。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020122662A (ja) * | 2019-01-29 | 2020-08-13 | 興和株式会社 | 表面検査用照明装置及び表面検査装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110687536B (zh) * | 2019-11-04 | 2023-10-27 | 武汉华讯国蓉科技有限公司 | 一种船舶雷达视频数据存储与绘制方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01202682A (ja) * | 1988-02-09 | 1989-08-15 | Furuno Electric Co Ltd | 衝突予防レーダー装置 |
JPH1123707A (ja) * | 1997-06-30 | 1999-01-29 | Japan Radio Co Ltd | Arpa及びその信号処理方法 |
JP2008039557A (ja) * | 2006-08-04 | 2008-02-21 | Japan Radio Co Ltd | 航跡表示機能付レーダ装置 |
JP2008209199A (ja) * | 2007-02-26 | 2008-09-11 | Furuno Electric Co Ltd | レーダ装置および類似装置 |
JP2010197263A (ja) * | 2009-02-26 | 2010-09-09 | Furuno Electric Co Ltd | レーダ装置 |
JP2011059019A (ja) | 2009-09-11 | 2011-03-24 | Furuno Electric Co Ltd | 画像処理装置、これを搭載したレーダ装置、画像処理方法及び画像処理プログラム |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9803906D0 (en) * | 1998-02-26 | 1998-04-22 | Siemens Plessey Electronic | Improvements in or relating to radar systems |
WO2004019301A1 (ja) * | 2002-08-26 | 2004-03-04 | Ishikawajima-Harima Heavy Industries Co.,Ltd. | 操船支援システム |
US20040046688A1 (en) * | 2002-09-06 | 2004-03-11 | Bigge Mark W. | Mobile surveillance vehicle system |
CN100371734C (zh) * | 2005-03-31 | 2008-02-27 | 陈华平 | 船用导航雷达 |
CN101655562B (zh) * | 2009-09-11 | 2012-05-09 | 深圳市高伦技术有限公司 | 用于船舶的防碰撞告警雷达系统及设备 |
JP5654223B2 (ja) * | 2009-09-11 | 2015-01-14 | 古野電気株式会社 | 画像処理装置、これを搭載したレーダ装置、画像処理方法及び画像処理プログラム |
JP5570786B2 (ja) * | 2009-11-09 | 2014-08-13 | 古野電気株式会社 | 信号処理装置、レーダ装置及び信号処理プログラム |
CN102313885B (zh) * | 2010-06-30 | 2013-06-26 | 中国科学院电子学研究所 | 多维度微波成像系统及方法 |
JP5616200B2 (ja) * | 2010-11-18 | 2014-10-29 | 古野電気株式会社 | レーダ装置、注目物標検出方法及び注目物標検出プログラム |
JP2012112671A (ja) * | 2010-11-19 | 2012-06-14 | Furuno Electric Co Ltd | 探知装置、レーダ装置、探知方法、および探知プログラム |
US8451165B2 (en) * | 2010-12-06 | 2013-05-28 | Raytheon Company | Mobile radar system |
JP2014512591A (ja) * | 2011-03-11 | 2014-05-22 | ザ・ユニバーシティ・オブ・シドニー | 画像処理 |
NO2606482T3 (ja) * | 2011-05-23 | 2017-12-23 | ||
CN102278986A (zh) * | 2011-06-21 | 2011-12-14 | 海华电子企业(中国)有限公司 | 电子海图航线设计最优化方法 |
ITRM20110633A1 (it) * | 2011-11-30 | 2013-05-31 | Selex Sistemi Integrati Spa | Algoritmo anti-riflessione di modo s per l'eliminazione di false tracce dovute a repliche riflesse in sistemi radar di terra. |
CN103975249B (zh) * | 2011-12-09 | 2017-03-29 | 古野电气株式会社 | 图像处理装置、雷达装置、图像处理方法 |
EP2808853A4 (en) * | 2012-01-26 | 2015-07-08 | Toyota Motor Co Ltd | OBJECT RECOGNITION DEVICE AND VEHICLE CONTROL DEVICE |
JP5980587B2 (ja) * | 2012-06-21 | 2016-08-31 | 古野電気株式会社 | レーダ装置及び反射信号処理方法 |
JP6084812B2 (ja) * | 2012-10-29 | 2017-02-22 | 古野電気株式会社 | 追尾処理装置、及び追尾処理方法 |
CN104777480A (zh) * | 2014-01-15 | 2015-07-15 | 杭州一帆船舶设备技术有限公司 | 一种用于海洋渔业船舶的主动防碰撞雷达报警系统 |
JP6643659B2 (ja) * | 2014-04-09 | 2020-02-12 | パナソニックIpマネジメント株式会社 | 表示制御装置、表示制御方法、および表示制御プログラム |
DE102014208386A1 (de) * | 2014-05-06 | 2015-11-12 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Überwachen eines immobilen Raumbereichs |
CN104391281A (zh) * | 2014-11-21 | 2015-03-04 | 武汉大学 | 提高天波雷达海面船舶目标跟踪定位精度的方法 |
US10788570B2 (en) * | 2017-09-29 | 2020-09-29 | The Boeing Company | Radar system for mobile platform and method of use |
-
2017
- 2017-02-21 EP EP17769762.0A patent/EP3435112B1/en active Active
- 2017-02-21 JP JP2018507138A patent/JP6703799B2/ja active Active
- 2017-02-21 WO PCT/JP2017/006317 patent/WO2017163716A1/ja active Application Filing
- 2017-02-21 CN CN201780016011.0A patent/CN108713153B/zh active Active
- 2017-02-21 US US16/087,581 patent/US11105892B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01202682A (ja) * | 1988-02-09 | 1989-08-15 | Furuno Electric Co Ltd | 衝突予防レーダー装置 |
JPH1123707A (ja) * | 1997-06-30 | 1999-01-29 | Japan Radio Co Ltd | Arpa及びその信号処理方法 |
JP2008039557A (ja) * | 2006-08-04 | 2008-02-21 | Japan Radio Co Ltd | 航跡表示機能付レーダ装置 |
JP2008209199A (ja) * | 2007-02-26 | 2008-09-11 | Furuno Electric Co Ltd | レーダ装置および類似装置 |
JP2010197263A (ja) * | 2009-02-26 | 2010-09-09 | Furuno Electric Co Ltd | レーダ装置 |
JP2011059019A (ja) | 2009-09-11 | 2011-03-24 | Furuno Electric Co Ltd | 画像処理装置、これを搭載したレーダ装置、画像処理方法及び画像処理プログラム |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020122662A (ja) * | 2019-01-29 | 2020-08-13 | 興和株式会社 | 表面検査用照明装置及び表面検査装置 |
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