WO1991007670A1 - Materiel radar - Google Patents

Materiel radar Download PDF

Info

Publication number
WO1991007670A1
WO1991007670A1 PCT/JP1990/001513 JP9001513W WO9107670A1 WO 1991007670 A1 WO1991007670 A1 WO 1991007670A1 JP 9001513 W JP9001513 W JP 9001513W WO 9107670 A1 WO9107670 A1 WO 9107670A1
Authority
WO
WIPO (PCT)
Prior art keywords
memory
signal
data
display
address
Prior art date
Application number
PCT/JP1990/001513
Other languages
English (en)
Japanese (ja)
Inventor
Takumi Fujikawa
Motoji Kondo
Original Assignee
Furuno Electric Company, Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1304188A external-priority patent/JPH0693019B2/ja
Priority claimed from JP1305835A external-priority patent/JPH0693020B2/ja
Application filed by Furuno Electric Company, Limited filed Critical Furuno Electric Company, Limited
Priority to DE4091926A priority Critical patent/DE4091926C2/de
Priority to KR1019910700596A priority patent/KR0142683B1/ko
Publication of WO1991007670A1 publication Critical patent/WO1991007670A1/fr
Priority to GB9115208A priority patent/GB2249686B/en

Links

Classifications

    • 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.
    • 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

Definitions

  • a radar detection signal is sequentially emitted in different directions while rotating an antenna, reflected signals arriving from each direction are received, and reflected signals arriving from a wide range are temporarily written into an image memory, read, and then read.
  • the present invention relates to a radar device which supplies a display to a display device and displays the surroundings of the radar antenna on its display surface.
  • the present invention provides a radar for removing unnecessary waves such as sea-surface reflected waves in any of the display modes so that necessary reflected waves can be easily identified, and appropriately displaying the trajectory of another ship or the like.
  • NU display north-up display
  • HU display head-up display
  • CU display course-up display
  • the area immediately above the display screen always points to the north. For example, 0 for a ship course. (North direction reference), the bow line is at the position S indicated by the solid arrow, and when the course of the ship is turned 90 ° clockwise (eastward), the bow line moves to the position g indicated by the broken arrow.
  • fixed images such as fixed buoys are immovable regardless of the course of the ship. In other words, the displayed image is a view that the operator sees from the sky rather than on the ship,
  • the point directly above the display screen always points to the bow.
  • the fixed image such as a fixed buoy to the line exists in AX position
  • the fixed image A 2 Move to position g. In other words, it is as if the displayed image is exactly the scene that the operator sees on the ship
  • the position immediately above the display screen always indicates the preset course of the ship, which is set in advance.
  • the ship course is set to 10 °.
  • the position of the bow line will be indicated by a solid arrow if the ship is proceeding according to the planned course.
  • the ship will change due to the change of course to avoid obstacles.
  • the mane of the bow line is virtual on the screen Move as indicated by the line.
  • the fixed image is fixed regardless of the course change of the ship.
  • a receiver 1 receives a reflected signal of one beam coming from each direction due to each detection pulse signal of the detection pulse signals sequentially emitted in different directions due to the rotation of a radar antenna (not shown).
  • the one-beam received signal from the receiver 1 is converted from an analog signal to a digital signal by the AZD converter 2 and is temporarily stored in the buffer memory 3 in time series.
  • the received signal (echo data) from the buffer memory 3 is converted into data for image display by the light data generator 4.
  • the light data generator 4 removes unnecessary reflected waves such as sea surface reflected waves. For this purpose, a process called scan correlation is performed on the echo signal captured by the radar antenna.
  • This scan phase is a process for creating data for one revolution using a received signal for ten revolutions of the antenna as disclosed in, for example, Japanese Patent Application Laid-Open No. 62-223681.
  • the received signal of the first cycle is compared with the received signal of the second cycle, and the comparison result data is created according to a predetermined rule.
  • the comparison result data and the third The comparison is made with the received signals on the round, new comparison result data is created, and the same processing is repeated in order to remove an image due to unstable reflection such as sea surface reflection.
  • buffer memory 3 From the current received signal given by the user and the past received signal that has already damaged the frame memory 6.
  • the output data from the write data generator 4 is written to the frame memory 6 with the write address generated by the write address generator 5.
  • the data damaged in the frame memory 6 is read based on a read address according to a raster scan method generated by the read address generator 7.
  • the read data, beta is an image displayed on a display device such as a CR T (not shown)
  • the light address generator 5 generates a write address composed of rectangular coordinates (X..) Based on the antenna direction, the designated display mode, the course of the ship, and the like. Performs one orthogonal coordinate transformation. This conversion is performed based on the following equation.
  • X c and Y c are the ship's own position address in the frame memory
  • R is the distance from the ship's own position
  • ⁇ is the angle in the sweep direction from the Y axis (frame memory)
  • 0 A is based on the bow direction.
  • Antenna angle, 0 B is course of own ship, 0 c is set course.
  • the write address generator 5 when reading for display on the display is performed by the raster scan method, the write address generator 5 is extremely Although the coordinate transformation is performed from the coordinates to the rectangular coordinates, the light address generator 5 does not need to perform the above-described coordinate transformation when the spiral scan method is used.
  • the moving amount of the ship can be ignored even if the ship is stopped or the ship is moving
  • the data written for one rotation of the antenna rotation to the frame memory 6 is updated every moment, the data indicating the fixed object ⁇ ⁇ is always written to the same position on the frame memory 6, so it is fixed.
  • the display position of the object does not move on the screen. Therefore, even in the conventional radar device, the scan correlation processing can be properly performed, and unnecessary waves such as sea surface reflected waves can be removed.
  • HU display mode is relatively frequently used because the actual view seen by the operator and the display screen match.
  • the HU display mode when the HU display mode is set Cannot display the moving trajectory of the detected object.
  • the current received signal and the past received signal are simply written in the frame memory in a superimposed manner.
  • the write data to the frame memory is updated every moment, the current reception signal and the write reception signal cannot be written to the same position because the bow line direction of the ship is constantly changing. As a result, the movement trajectory of the detected object cannot be accurately displayed.
  • the block diagram showing the configuration of the conventional radar device a shown in FIG. 13 is almost the same as the block diagram showing the configuration of the conventional radar device shown in FIG.
  • the difference from the block diagram showing the configuration of the conventional radar system shown in Fig. 7 is that a signal indicating the own position g is input to the light address generator 5m and the lead address generator 7m. .
  • the output signal of the light data generation unit 4 is written to the frame memory 6 with a scented address generated by the write address generation unit 5m.
  • the data signal permeated into the frame memory 6 is read based on a read address according to a raster scan method generated from the read address generator 7m.
  • the light address generator 5 m is based on the antenna direction, the course of the ship, the position S of the ship, and the display mode set. Then, the echo signal generation point for the radar antenna is converted from polar coordinates to orthogonal coordinates, and a harmful address represented by orthogonal coordinates is generated.
  • the relative motion (hereinafter abbreviated as RM) and the true motion (hereinafter abbreviated as ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ) depend on whether the position of the ship is fixed or displayed so as to move according to the moving amount of the ship.
  • the operation mode to be used is specified by the operator via a mode setting section (not shown).
  • RM fixes the ship's position (beam center) to a specific position (center in the figure) on the display screen, and moves the fixed target.
  • ⁇ moves the ship's position (beam center) at the ship's speed and course on the display screen, and makes the fixed object ⁇ immovable.
  • the address of the beam center of the write data to the frame memory 6 is fixed or variable, that is, the beam center of the write data to the frame memory 6 is considered.
  • the case where the address is fixed is tentatively defined as RM damage processing
  • the case where the address is fixed is defined as ⁇ write processing
  • the case where the address is fixed is defined as ⁇ ⁇ fragrance processing.
  • the read start address at the time of display is also Similar to the processing of the center address, it is considered to be fixed or variable, and the former case is assumed to be RM read processing and the latter case is assumed to be M read processing. Define.
  • both the write area indicated by a circle and the read area indicated by a square in the frame memory 6 are always fixed. Become. In this case, the ship's own position (corresponding to the beam center address) is always displayed in the localization position S on the display screen, while the target position S is displayed in the relative movement position S. ⁇
  • the beam center address is moved on the frame memory 6 in cases 2 and 4, and the read start address is moved (scrolled) in cases 3 and 4.
  • the following two display modes related to the course may be combined with the two operation modes.
  • the RM combines all of the NU, HU, and CU display modes shown in Figs. 4 to 6, respectively, while the TM displays both the NU display mode and the CU display mode. The combination is performed, but not combined with the HU display mode.
  • the screen appears as if the ship is moving on the map in TM.NU mode, and the screen in RM / HU mode.
  • the view is as if the operator were on a boat.
  • the scan correlation process uses the current reception data supplied from the buffer memory 3 and the past reception data already written in the frame memory 6 so that the A TM write process for fixing the position data of the fixed object must be performed. In other words, if your ship is moving and If the amount of movement cannot be ignored, the echo signal must be scented into the frame memory 6 in the TM writing process.
  • the damage processing in the TMU mode is the above cases 2 and 4, and the following problems occur.
  • One object of the present invention is to provide a radar apparatus having an image memory, which removes unnecessary waves such as sea-surface reflected waves and displays the necessary reflected waves so that the reflected waves can be easily identified. is there.
  • Another object of the present invention is to accurately perform scan correlation processing on an echo signal captured by a radar antenna when a display mode is set to a Hu display mode in a radar device a having an image memory. It is to provide a radar device that can
  • Another object of the present invention is to provide a radar apparatus having an image memory, wherein the display mode is set to any one of the NU display mode, the CU display mode, and the HU display mode.
  • An object of the present invention is to provide a radar device capable of accurately performing scan correlation processing on an echo signal captured by a radar antenna.
  • Another object of the present invention is to provide a relative motion (hereinafter abbreviated as RM) display in which the ship's own position is fixed and displayed. In the display mode, unnecessary reflected waves such as sea-surface reflected waves can be removed and necessary reflected waves can be easily identified.
  • RM relative motion
  • Another object of the present invention is to provide a radar system in which, when a ship equipped with radar equipment S is stopped or a ship is moving, the amount of movement can be ignored, and the bow direction of the ship is constantly changed. It is an object of the present invention to provide a radar apparatus which removes unnecessary waves such as sea-surface reflected waves and displays the necessary reflected waves so that the reflected waves can be easily identified even when they fluctuate.
  • Another object of the present invention is to remove unnecessary waves such as sea-surface reflected waves and display the surrounding situation even when a ship equipped with radar equipment tt moves and the amount of movement cannot be ignored.
  • Radar equipment S is to be provided.
  • One object of the present invention is to provide a radar device having an image memory, which can accurately display the movement trajectory of another ship or the like.
  • Another object of the present invention is to provide a radar apparatus having an image memory, which can accurately display a moving trajectory of another ship when the display mode is set to the HU display mode. It is to be.
  • Another object of the present invention is to provide a radar apparatus having an image memory in which the display mode is set to any one of the NU display mode, the CU display mode, and the HU display mode.
  • An object of the present invention is to provide a radar device capable of accurately displaying a moving trajectory of a ship or the like.
  • Another object of the present invention is to provide a relative motion for displaying a fixed position of the ship.
  • RM radar device
  • Another object of the present invention is to provide a system in which the direction of the bow of a ship constantly changes when the ship equipped with radar equipment is stopped or the amount of movement can be ignored even if the ship is moving.
  • An object of the present invention is to provide a radar device capable of accurately displaying a trace of the movement of another ship or the like even in the event of a collision.
  • Another object of the present invention is to accurately display the movement trajectory of another ship or the like even when a ship equipped with radar equipment g moves and the amount of movement cannot be ignored, and to fix fixed objects such as islands. It is an object of the present invention to provide a radar device which can appropriately display the information.
  • Another object of the present invention is to provide a radar apparatus S capable of continuously and correctly executing a scan correlation process in the TM-NU mode.
  • a first feature of the present invention is a radar device that sequentially emits detection signals in different directions, receives an echo signal, and displays the echo signal on a display to display a surrounding situation in a wide range direction.
  • a buffer memory for storing a reflection signal caused by one detection signal transmitted from the receiving unit, and an echo signal returning from a wide range direction in a corresponding recording element determined based on a predetermined direction.
  • a processing memory that performs correlation processing on a signal output from the buffer memory and a signal read from the processing memory, and supplies the output signal to the processing memory; and an output signal of the correlation means. It is composed of a frame memory that stores the corresponding elements determined by the set display mode, and a display that displays the signal transmitted from this frame memory.
  • a second feature of the present invention is a radar device that sequentially emits detection signals in different directions, receives an echo signal, and displays the echo signal on a display to display a surrounding situation in a wide range direction.
  • a buffer memory for storing a reflected signal caused by a single detection signal transmitted from the receiving unit, and a corresponding memory for storing an input signal in a corresponding element determined based on a predetermined direction.
  • 1 memory and signal processing for supplying a signal representing a wake of another ship obtained by performing signal processing on a signal output from the buffer memory and a signal read from the first memory to the first memory.
  • Means a second memory for storing an output signal representing the wake of the signal processing means in a corresponding useful element determined by the set display mode, and a second memory read out from the second memory. It is to be constituted by a display device for displaying the signal.
  • a third feature of the present invention is that a radar device S which sequentially emits detection signals in different directions, receives echo signals, and displays the same on a display device to display surrounding conditions in a wide range direction, receives echo signals.
  • Receiver And a buffer memory that stores the reflected signal caused by a single detection signal sent from this receiver, and an echo signal that sweeps from a wide range of directions corresponds to each point on the earth's surface that generated the echo signal.
  • a first memory for storing in each of the storage elements to be processed, correlation means for performing a correlation process on a signal output from the buffer memory and a signal read from the first memory, and supplying the output signal to the first memory;
  • the output signal of the correlating means is constituted by a second memory for storing the corresponding recording element determined by the set display mode, and a display for displaying a signal read from the second memory. is there.
  • FIG. 1 is a block diagram of one embodiment of the present invention.
  • FIG. 2 is a data map diagram of a processing memory used in FIG.
  • FIG. 3 is a data map diagram of the frame memory used in FIG.
  • FIG. 4 is a schematic diagram showing a display image in the NU display mode.
  • FIG. 5 is a schematic diagram showing a display image in the HU display mode.
  • FIG. 6 is a schematic diagram showing a display image in the CU display mode.
  • FIG. 7 is a block diagram of a conventional radar device.
  • FIG. 8 is a block diagram of another embodiment of the present invention.
  • 9 (a) to 9 (c) are data diagrams of the processing memory shown in FIG. 8,
  • Figs. 10 (a) to 10 (c) show the TM'NU mode.
  • FIG. 8 is a data map of the frame memory shown in FIG. 8;
  • FIGS. 11 (a) to 11 (c) show the RM'H U mode.
  • FIG. 9 is a data map of the frame memory shown in FIG. 8.
  • Fig. 12 shows the movement pattern of the beam center address (own ship position) by scrolling.
  • FIG. 13 is a block diagram of a conventional radar device.
  • FIG. 14 is a schematic diagram showing a display image in the RM mode.
  • FIG. 15 is a schematic diagram showing a display image in the TM mode.
  • FIGS. 16 (a) to 16 (d) show the conventional writing processing and reading processing.
  • FIG. 3 is a diagram showing a write area and a read area on a frame memory in one combination *
  • Fig. 17 shows the movement pattern of the beam center address (own ship position) by scrolling.
  • FIG. 18 is a block diagram of another embodiment of the present invention.
  • FIG. 19 is a block diagram of another embodiment of the present invention.
  • Fig. 1 shows that even when the direction of the bow line of the ship changes constantly, the scan correlation process is performed properly and unnecessary waves such as sea surface reflected waves are removed regardless of the display mode set. A signal can be displayed An embodiment of the present invention is shown.
  • a receiver 1 is a reflection of one beam arriving from each direction caused by each detection pulse signal of a detection pulse signal sequentially emitted in a different direction as a radar antenna (not shown) rotates.
  • detection receives and amplifies a signal
  • received signal 1 beam from the receiver 1 is converted from an analog signal to a digital signal by the AZD converter 2, time series temporarily in the buffer memory 3 serial 1! Is done.
  • the write data generator 4 performs scan correlation processing using the echo data signal supplied from the buffer memory 3 and the signal supplied from the processing memory 8 to convert the echo data signal into data for image display.
  • the output data of the creation unit 4 is written to the processing memory 8 with the damaging address generated by the second write address generation unit 9 and the fragrance generated by the first write address generation unit 5
  • the data written to the frame memory 6 with the write address is the same as the data written to the frame memory 6 from the read address. Readout is performed based on a readout address according to the raster scan method generated from the raw section 7.
  • the read data is displayed as an image on a display such as a CRT (not shown).
  • the first light address generation unit 5 uses orthogonal data based on the antenna direction, the specified display mode, and the course of the ship. A harmful address consisting of coordinates (X.Y) is generated, and the polar coordinate-orthogonal coordinate transformation is performed as described above.
  • the second light address generator 9 also specifies the antenna direction and antenna direction. Based on the display mode and the course of the ship, and provides the address signal to the processing memory 8.
  • the processing memory 8 stores the output signal of the write data generator 4 based on the damage address signal supplied from the second write address generator 9 in a corresponding storage element that is determined by the NU display method or the CU display method.
  • Write to The frame memory 6 determines the output signal of the write data generator 4 based on the write address signal supplied from the first write address generator 5 in the display mode set in the frame memory 6 at each time.
  • the second write address generator 9 for the processing memory 8 is configured to always generate a write address in the display mode of NU display or CU display. I have.
  • the write address generator 5 for one frame memory 6 is configured to generate a write address according to a display mode set among NU display, HU display, and CU display. You.
  • course 0 G 90 °
  • antenna orientation 0 A 90.
  • the data map of the processing memory 8 is as shown in FIG. 2, and the data map of the frame memory 6 is as shown in FIG.
  • the data to be written to the processing memory 8 and the data to be received in the frame memory S have a course ⁇ . Is also added. Except for this point, the data to be written to the processing memory 8 is exactly the same as the data to be harmed to the frame memory 6, and the contents of the processing memory 8 are rotated at the time of writing so as to be harmed to the frame memory 6. .
  • the processing memory 8 When the NU display mode or the CU display mode is set, the processing memory 8 writes to the corresponding storage element which is determined by the direction in which the boat travels in the north or in the direction in which the ship travels. An echo signal may be written to a convenient element determined based on the azimuth.
  • the data created by performing the scan correlation process using the current data given from the buffer memory 3 and the past data in the processing memory 8 are sequentially stored in the processing memory 8 as the second write address generation unit.
  • To write to frame memory 6. The data harmed to the frame memory 6 is read out according to the read address generated by the read address generator 7 and then displayed on a display (not shown). On the screen of this display, the data magic of the frame memory 6 is displayed as it is.
  • Figure 18 shows the case where the ship equipped with radar equipment is stopped or the movement of the ship can be ignored even if the ship is moving, and the bow line of the ship constantly fluctuates.
  • an embodiment of the present invention capable of correctly displaying the track of another ship regardless of the set display mode of the HU display, the NU display, and the CU display will be described.
  • Fig. 18 the description of the same components as those in the block diagram shown in Fig. 1 will be omitted.
  • the wake signal generation unit 4 'and the wake signal processing memory 8' receives the echo signal as the current signal from the buffer memory 3.
  • the signal stored and supplied as a past signal is supplied from the wake signal processing memory 8 ′.
  • the wake signal generation unit 4 ′ based on the current signal and the past signal, includes, for example, a wake signal that lasts only for a predetermined period of time and a wake portion indicating the current position of the ship when the wake is displayed.
  • the wake signal processing memory 8 ' is configured in the same way as the processing memory 8, and the second lighter is generated.
  • the wake signal is obtained by signal processing so that the older part of the wake is displayed darker.
  • the wake signal supplied from the wake signal generator 4 ' is written to the corresponding storage element.
  • the output signal of the wake signal generation unit 4 ′ is supplied to the frame memory 6 and written together with the output signal of the write data generation unit 4.
  • the wake signal processing memory 8 ' data is always written to the wake signal processing memory 8' using the scented address in the NU display mode, even when the HU display mode is set, in the same manner as the processing memory 8. Since the correspondence between the past data and the present data can be accurately obtained by the memory 8 ', the signal processing can be executed correctly. In this way, the HU display is realized by the configuration shown in FIG. In the mode, the trajectories of other ships and islands can be displayed. Also, unnecessary waves such as sea surface reflected waves can be removed, and surrounding conditions including the wakes of other ships can be displayed.
  • Fig. 8 shows that when a ship equipped with radar equipment g embodying the present invention is moving and the amount of movement of the ship cannot be neglected, An embodiment of the present invention capable of removing unnecessary waves such as sea-surface reflected waves and displaying the surrounding situation is shown.
  • the receiver 1 is configured to detect one beam arriving from each direction caused by each detection pulse signal of the detection pulse signal sequentially emitted in different directions as the radar antenna (not shown) rotates.
  • the reflected signal is received and detected and amplified.
  • the signal of one beam from the receiver 1 is converted from an analog signal to a digital signal by the AZD converter 2 and is temporarily stored in the buffer memory 3 in time series. .
  • the received signal (echo data) output from the buffer memory 3 is converted into image display data by a write data creation unit 4.
  • the write data creation unit 4 generates unnecessary reflections such as sea surface reflected waves.
  • a scan phase process is performed on the echo signal captured by the radar antenna in order to eliminate the waves.
  • the scan correlation process is based on the current received signal provided from the buffer memory 3 and the already processed memory 8h. This is performed by using the passing-in received signal.
  • the output data from the write data generator 4 is written to the processing memory 8h with the scented address generated by the second write address generator 9h.
  • the signal recorded in the processing memory 8h is read in response to the address signal sent from the second write address generator 9h and supplied to the write data generator 4.
  • the output data from the creation unit 4 is harmed to the frame memory 6 h by the harmful address generated by the first write address generation unit 5 h. It is.
  • the data written to the frame memory 6h is read out according to the read address generated from the door address generator 7h, and then displayed on a display (not shown).
  • the read processing in the read address generator 7h is RM read processing.
  • the output data from the write data generator 4 is written into the processing memory 8h by the write address generated by the second write address generator 9h, and at the same time, a mode setting section (not shown) by the operator.
  • the write address is written into the frame memory 6h with the harmful address generated by the write address generator 5h in accordance with the use mode specified through the antenna.
  • the second write address generator 9h Based on the direction, the course of the ship, the position of the ship, and the display mode set, the echo signal generation point for the radar antenna is converted from polar coordinates to rectangular coordinates, and a write address expressed by rectangular coordinates is generated.
  • the first light address generation unit 5h converts the echo signal generation point for the radar antenna from polar coordinates to rectangular coordinates based on the antenna direction, own ship course, own ship position, and display mode to be set. Generates the write address represented.
  • the second write address generator 9h When the designated use mode is selected to be either the TM / NU mode or the RM / HU mode, the second write address generator 9h always outputs the processing memory 8h to the processing memory 8h. It is configured to perform data harm by using a write address in the NU mode. The operation when the above two combination modes are specified will be described below.
  • Both the write address for the processing memory 8h and the write address for the frame memory 6h are the write addresses in the TM / NU mode.
  • the data in the processing memory 8h is the first address.
  • the data in the frame memory 6h is written correspondingly as shown in Fig. 10 (a).
  • the data sequentially changes for example, from the state of FIG. 9 (a) to the state of FIG. 9 (b), and further to the state of FIG. 9 (c)
  • the data of the frame memory 6h is changed to the state of FIG.
  • the state changes from a) to the state shown in Fig. 10 (b), and then to the state shown in Fig. 10 (c).
  • FIGS. 10 (b) to 10 (c) The contents of the ⁇ frame memory 6 h, which is fixed in the processing memory 8 h, are shown in FIGS. 10 (b) to 10 (c).
  • a pull-in operation is added, but since the scan correlation result is in the processing memory, it is not necessary to redo the scan correlation from the beginning.
  • the contents of the frame memory 6h are beamed. Update with one till.
  • the harmful address for the processing memory 8 h was ⁇ ⁇
  • the scented address in the NU mode was used.
  • the address is the write address in RM / HU mode.
  • the data in the processing memory 8h is as shown in FIG. 9 (a)
  • the data in the frame memory 6h is as shown in FIG. 11 (a).
  • the data in the processing memory 8h changes sequentially from the state shown in Fig. 9 (a) to the state shown in Fig. 9 (b) and then to the state shown in Fig. 9 (c) as the ship moves
  • the data in the frame memory 6h is shown in Fig. 1 1
  • the state shown in FIG. 11A changes sequentially from the state shown in FIG. 11B to the state shown in FIG. 11C. In other words, in this case, too,
  • a to C are immobile.
  • the data to be written into the frame memory 6 h in this example is made to those same as rotated heading theta beta fraction to what burn them ⁇ processing memory 8 h, and writes the processing memory 8 h data and frame memory 6 h This is exactly the same as the data to be written into the frame memory 6 h, and is the result of rotating the contents of the processing memory 8 h when damaging the frame memory 6 h.
  • the processing memory 8h sets the data writing area (the arc in the figure) as the own ship moves, based on the own ship's movement. h Move on top.
  • the process of moving the beam center address (own ship position) on the processing memory 8 h following the movement of the ship will be briefly described below. For explanation, course 0. Is constant.
  • the X address circulates in the range from "00H” to "1FH", resulting in the following phenomenon.
  • Such processing is performed by the second write address generation unit. Made by 9 h.
  • the next beam center address is moved from the lower side of the figure to the diagonally upper P2 position. exceeding the upper end of the h Kiniwa, P of P 2 position from the lower side along the Y-axis of FIG, also ⁇ is urchin moved Remind as to position dashed arrows, after having moved from the [rho 3 position to the position From the, position to the left P s position along the X-axis in the figure. In this manner, the beam center address is sequentially changed.
  • the read start address of the damage content of the frame memory 6h is always the fixed RM read process, so that the read address is generated.
  • the circuit configuration and processing of the unit h are simpler than those of the conventional example requiring scroll operation.
  • the capacity of the frame memory 6h may be set to a size that surrounds the arc-shaped writing area, and can be smaller than that of the conventional frame memory 6 in which the reading start address is variable.
  • Fig. 19 shows that even if a ship equipped with radar equipment is moving and the amount of movement of the ship cannot be ignored, fixed objects such as islands can be displayed correctly in RM'HU mode.
  • An embodiment of the present invention capable of displaying the true trajectory of another ship is shown below.
  • the wake signal generation unit 4 ′ and the wake signal processing memory 8 h ′ The wake signal generation unit 4 ′ is supplied with the echo signal as the current signal from the buffer memory 3, and receives the signal stored as the foreigner from the wake signal processing memory 8 h ′.
  • the navigation signal generator 4 ′ based on the current signal and the passing signal, indicates, for example, a wake signal that lasts only for a predetermined time, or indicates the current position of the ship when the wake is displayed.
  • the wake signal is generated by processing the signal so that the wake part is displayed brightest and the older part of the wake is displayed darker.
  • the wake signal processing memory 8h is the same as the processing memory 8h. Configured, second light add A track signal supplied from the domestic mark signal generating unit 4 'in response to the address signal included can harm supplied from the scan generator 9 h writing to the corresponding Ki ⁇ element.
  • the output signal of the wake signal generation unit 4 ′ is supplied to the frame memory 6 h together with the output signal of the write data generation unit 4 and is damaged.
  • the wake signal processing memory 8h ' like the processing memory 8h, • Data is scented into the wake signal processing memory 8h * at the harmful address in the NU mode, and the correspondence between past data and current data can be accurately determined by the memory 8h ', so signal processing is correct. I can do it. In this way, by configuring as shown in FIG.
  • the movement trajectory of another ship or an island can be displayed. Also, unnecessary waves such as sea surface reflected waves can be removed, and the surrounding conditions including the wakes of other ships can be displayed. In this way, the wake signal processing memory 8h 'is added in addition to the processing memory 8h. If the above processing is performed, the true movement trajectory of another ship can be displayed in the RM / HU mode.
  • the processing memory currently used is 8 h
  • the current data is written using the write address in the TM / NU mode, and the wake signal processing memory 8h 'is also written in the TM' NU mode, so that the data in the current processing memory and the data in the past processing memory are written.
  • the data in which ⁇ and ⁇ ⁇ are superimposed are written to the frame memory 6 h at the harmful address in the RM.HU mode.
  • the reading for display on the display unit is performed by the raster scan method, and the first address is read.
  • Both the generator and the second address generator performed coordinate conversion from polar coordinates ⁇ to rectangular coordinates, and supplied the obtained address signals to the frame memory and the processing memory, respectively. Only however, even when the readout for display on the display is performed in a raster scan mode, the second address generating section generates an address signal for the current position, and the first address generating section generates the address signal. A converted orthogonal coordinate address signal may be generated.
  • the reading for display on the display is performed by the spiral scan method, it is not necessary for both the first address generation unit and the second address generation unit to perform coordinate transformation from polar coordinates to rectangular coordinates.
  • the echo signal is written in the processing memory with the harmful address in the TM / NU mode.
  • the present invention is not limited to this. In short, it suffices to damage the storage element of the processing memory corresponding to each point on the earth where the echo signal is generated.
  • the amount of movement of the ship can be ignored.
  • the display mode set to any of the HU display mode, NU display mode, and CU display mode it is possible to remove unnecessary waves from sea surface reflected waves and to display the surrounding conditions, and It is possible to provide a radar device that can appropriately display the moving track of another ship, etc.
  • unnecessary waves from sea surface reflected waves can be removed and the surrounding conditions can be displayed, and fixed objects such as islands can be displayed.

Landscapes

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

Abstract

Matériel radar présentant un affichage à partir duquel les ondes réfléchies nécessaires peuvent être facilement discriminées par un enlèvement dans un mode d'affichage des ondes indésirables telles que les parasites dus à la réflexion par la mer, et pouvant également afficher correctement le cap des autres navires. Le matériel comporte une unité de réception (1) qui reçoit les signaux d'écho, une mémoire tampon (3) qui stocke temporairement les signaux réfléchis provenant des signaux de détection envoyés par l'unité de réception, une première mémoire (8) qui stocke les signaux d'écho arrivant dans plusieurs sens dans les éléments de mémoire correspondant aux endroits sur la terre où les signaux d'écho sont générés, un moyen de traitement (4) des signaux qui traite les signaux sortis par la mémoire tampon et les signaux lus dans la première mémoire, et qui envoie les signaux de sortie à la première mémoire, une deuxième mémoire (6) qui stocke les signaux de sortie provenant du moyen de corrélation dans les éléments de mémoire correspondants déterminés par un mode d'affichage sélectionné, ainsi qu'une moitié d'affichage qui affiche les signaux lus dans la deuxième mémoire.
PCT/JP1990/001513 1989-11-21 1990-11-21 Materiel radar WO1991007670A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE4091926A DE4091926C2 (de) 1989-11-21 1990-11-21 Radargerät
KR1019910700596A KR0142683B1 (ko) 1989-11-21 1990-11-21 레이다 장치
GB9115208A GB2249686B (en) 1989-11-21 1991-07-15 Radar apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1304188A JPH0693019B2 (ja) 1989-11-21 1989-11-21 レーダ装置
JP1/304188 1989-11-21
JP1305835A JPH0693020B2 (ja) 1989-11-25 1989-11-25 レーダ装置
JP1/305835 1989-11-25

Publications (1)

Publication Number Publication Date
WO1991007670A1 true WO1991007670A1 (fr) 1991-05-30

Family

ID=26563813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001513 WO1991007670A1 (fr) 1989-11-21 1990-11-21 Materiel radar

Country Status (4)

Country Link
KR (1) KR0142683B1 (fr)
DE (2) DE4091926T (fr)
GB (1) GB2249686B (fr)
WO (1) WO1991007670A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100955040B1 (ko) * 2007-09-19 2010-04-28 삼성중공업 주식회사 레이다의 해면 반사파 필터링 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011184A (ja) * 1983-07-01 1985-01-21 Japan Radio Co Ltd 航法用表示装置
JPS6037431B2 (ja) * 1979-10-12 1985-08-26 日本無線株式会社 レ−ダカラ−表示装置
JPH0116056Y2 (fr) * 1985-03-29 1989-05-12

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797014A (en) * 1970-09-21 1974-03-12 Texas Instruments Inc Automatic radar target detection and scan conversion system
US3838420A (en) * 1972-08-29 1974-09-24 Hughes Aircraft Co Coordinate store digital scan converter
GB2067868B (en) * 1980-01-22 1983-11-30 Decca Ltd Radar display apparatus
US4439765A (en) * 1980-11-19 1984-03-27 Hughes Aircraft Company Radar video processor
JPS601184A (ja) * 1983-06-16 1985-01-07 Taisho Pharmaceut Co Ltd フロインド−ル化合物
JPS62223681A (ja) * 1986-03-26 1987-10-01 Furuno Electric Co Ltd レ−ダ装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037431B2 (ja) * 1979-10-12 1985-08-26 日本無線株式会社 レ−ダカラ−表示装置
JPS6011184A (ja) * 1983-07-01 1985-01-21 Japan Radio Co Ltd 航法用表示装置
JPH0116056Y2 (fr) * 1985-03-29 1989-05-12

Also Published As

Publication number Publication date
DE4091926C2 (de) 1999-09-09
DE4091926T (fr) 1992-01-30
KR0142683B1 (ko) 1998-08-17
KR920701832A (ko) 1992-08-12
GB9115208D0 (en) 1991-08-28
GB2249686B (en) 1994-08-31
GB2249686A (en) 1992-05-13

Similar Documents

Publication Publication Date Title
JP3628386B2 (ja) 監視画像表示装置
NO176073B (no) Skipsbaneindikerende innretning
US5351055A (en) Radar apparatus
WO1991007670A1 (fr) Materiel radar
JP2002311127A (ja) レーダ探知装置
JP2020177345A (ja) 情報表示装置、情報表示方法、及びプログラム
JP3162660B2 (ja) スキャン相関処理方法
JPH04295784A (ja) レーダ映像表示方法及び装置
JP3594977B2 (ja) 航跡表示装置
JPH0693019B2 (ja) レーダ装置
JPH10170643A (ja) 移動体航行援助装置
JPH0693020B2 (ja) レーダ装置
JP2003075528A (ja) 無線探知装置
JP3696502B2 (ja) レーダ映像表示方法およびレーダ装置
JP3388037B2 (ja) 船舶用レーダ装置
JP2828908B2 (ja) レーダ装置
JPH0690272B2 (ja) 探知装置
JP2828907B2 (ja) レーダ装置における座標変換方法及び表示制御方法
JP3603206B2 (ja) レーダ装置の表示方法
JPH0954152A (ja) 電子海図の重畳表示可能なレーダ装置
JP2952074B2 (ja) レーダ処理装置
JPH0690271B2 (ja) 探知装置
JPH0464432B2 (fr)
JP3309300B2 (ja) レーダ装置
JPH0338711Y2 (fr)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): DE GB KR US

WWE Wipo information: entry into national phase

Ref document number: 1019910700596

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 9115208.2

Country of ref document: GB

RET De translation (de og part 6b)

Ref document number: 4091926

Country of ref document: DE

Date of ref document: 19920130

WWE Wipo information: entry into national phase

Ref document number: 4091926

Country of ref document: DE