Abstract: The purpose is to provide a radar apparatus which can create and display only necessary trail data. The radar apparatus may include an acquisition module, an echo data creation module, a memory, a trail data creation module, and a display unit. The acquisition module may acquire an echo based on a reflected wave from a target object, of a transmitted electromagnetic wave. The echo data creation module may create, based on the echo, echo data at least indicative of a position of the target object. The memory may store determination data set, for every given display area, whether trail data indicative of a moving trail of the target object is to be newly created based on the echo. The trail data creation module may create the trail data based on the echo and the determination data. The display unit may display the echo data and the trail data.

Abstract: A radar apparatus (1) for creating a radar image based on reflection waves caused by radio waves transmitted from an antenna, is provided. The radar apparatus (1) includes a receiver (3) configured to receive the reflection waves of the transmitted radio waves, as reception signals, a suppression processing module (9) configured to suppress levels of reflection signals among the reception signals, each of the reflection signals caused by precipitation, a precipitation reflection visualizing data creating module (15) configured to create data indicating, as a precipitation reflection visualized area (97), an area corresponding to the signals of which levels are suppressed to below a threshold by the suppression processing module (9), and a display image data creating module (16) configured to create display image data indicating on the radar image, the precipitation reflection visualized area (97) created by the precipitation reflection visualizing data creating module (15).

Abstract: A radar apparatus (100) for detecting around a ship is provided. The apparatus (100) includes an unstable area detecting module (10) configured to observe a variation in a signal level corresponding to detection data over a plurality of scans, obtain unstableness of the observed detection data, and detect unstable areas (41, 42, 43, 44, 410, 420, 430, 440) based on the unstableness, a determining module (22) configured to measure a size of each of the areas and determine the area as a small target object area (41, 43) when the size of the area is below a given threshold, a processing module (6) configured to process the detection data corresponding to the small target object area (41, 43) to be emphasized when displayed, than the detection data corresponding to the other unstable area (42, 44), and a display unit (8) configured to display the processing result.

Abstract: The purpose is to provide a radar apparatus which can create and display only necessary trail data. The radar apparatus may include an acquisition module, an echo data creation module, a memory, a trail data creation module, and a display unit. The acquisition module may acquire an echo based on a reflected wave from a target object, of a transmitted electromagnetic wave. The echo data creation module may create, based on the echo, echo data at least indicative of a position of the target object. The memory may store determination data set, for every given display area, whether trail data indicative of a moving trail of the target object is to be newly created based on the echo. The trail data creation module may create the trail data based on the echo and the determination data. The display unit may display the echo data and the trail data.

Abstract: A radar apparatus (100) for detecting around a ship is provided. The apparatus (100) includes an unstable area detecting module (10) configured to observe a variation in a signal level corresponding to detection data over a plurality of scans, obtain unstableness of the observed detection data, and detect unstable areas (41, 42, 43, 44, 410, 420, 430, 440) based on the unstableness, a determining module (22) configured to measure a size of each of the areas and determine the area as a small target object area (41, 43) when the size of the area is below a given threshold, a processing module (6) configured to process the detection data corresponding to the small target object area (41, 43) to be emphasized when displayed, than the detection data corresponding to the other unstable area (42, 44), and a display unit (8) configured to display the processing result.

Abstract: A radar apparatus (1) for creating a radar image based on reflection waves caused by radio waves transmitted from an antenna, is provided. The radar apparatus (1) includes a receiver (3) configured to receive the reflection waves of the transmitted radio waves, as reception signals, a suppression processing module (9) configured to suppress levels of reflection signals among the reception signals, each of the reflection signals caused by precipitation, a precipitation reflection visualizing data creating module (15) configured to create data indicating, as a precipitation reflection visualized area (97), an area corresponding to the signals of which levels are suppressed to below a threshold by the suppression processing module (9), and a display image data creating module (16) configured to create display image data indicating on the radar image, the precipitation reflection visualized area (97) created by the precipitation reflection visualizing data creating module (15).

Abstract: This disclosure provides an image processing device, which includes a relative trail image memory for storing a relative trail data group indicating relative changes in position of a target object detected by echo signals obtained corresponding to detection signals transmitted while changing a transmitting azimuth direction, with respect to a transmitting position from which the detection signals are transmitted, and an approaching target object determination processing module for determining whether the target object detected with the detection signals is an approaching target object that approaches the transmitting position based on relative trail data existing on the same sweep line among the relative trail data group stored in the relative trail image memory.

Abstract: A radar device includes an antenna, from which a detection signal is transmitted while the antenna being rotated and by which a reflective wave of the transmitted detection signal is received to detect echo data, wherein image data is generated based on the detected echo data, a continuity detecting module for detecting a planar continuity of the currently detected echo data with respect to a pixel concerned in the image data, a behavior data generating module for generating behavior data indicative of a behavior of the echo data for a predetermined number of scans of the past in the pixel concerned based on behavior determination data, and an echo kind determining module for determining a kind of the echo data of the pixel concerned based on the planar continuity and the behavior data.

Abstract: A radar device is disclosed. The radar device includes a radar antenna, from which detection signals are transmitted while the radar antenna being rotated, the radar device generating a radar image from reflection waves of the transmitted detection signals, a reception module for receiving the reflection waves of the detection signals, an inclination calculating module for calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction, and a rain/snow reflection determining module for determining whether the received signals are reflection signals from at least one of rain and snow by using the inclination calculated by the inclination calculating module.

Abstract: This disclosure provides an image processing device, which includes a relative trail image memory for storing a relative trail data group indicating relative changes in position of a target object detected by echo signals obtained corresponding to detection signals transmitted while changing a transmitting azimuth direction, with respect to a transmitting position from which the detection signals are transmitted, and an approaching target object determination processing module for determining whether the target object detected with the detection signals is an approaching target object that approaches the transmitting position based on relative trail data existing on the same sweep line among the relative trail data group stored in the relative trail image memory.

Abstract: A radar apparatus in which an interpolated sweep between adjacent real sweeps is formed irrespective of an interval between the real sweeps, and image data corresponding to one cycle of sweeping can be certainly updated. A sweep azimuth generator (12) generates and outputs an azimuth of sweep interpolated between a current and previous real sweep azimuth based on the current and previous real sweep azimuths, to a draw address generator (7). A sweep data generator (11) performs linear interpolation based on solitariness removed data of current real sweep data read from a sweep memory (4), and the previous solitariness removed real sweep data stored therein to generate and output interpolated sweep data to an image memory (8). The image memory (8) stores the solitariness removed real sweep data or the interpolated sweep data based on the real and interpolated sweep azimuths from the draw address generator (7), and outputs them to a display (9).

Abstract: A radar device includes an antenna, from which a detection signal is transmitted while the antenna being rotated and by which a reflective wave of the transmitted detection signal is received to detect echo data, wherein image data is generated based on the detected echo data, a continuity detecting module for detecting a planer continuity of the currently detected echo data with respect to a pixel concerned in the image data, a behavior data generating module for generating behavior data indicative of a behavior of the echo data for a predetermined number of scans of the past in the pixel concerned based on behavior determination data, and an echo kind determining module for determining a kind of the echo data of the pixel concerned based on the planer continuity and the behavior data.

Abstract: A radar device is disclosed. The radar device includes a radar antenna, from which detection signals are transmitted while the radar antenna being rotated, the radar device generating a radar image from reflection waves of the transmitted detection signals, a reception module for receiving the reflection waves of the detection signals, an inclination calculating module for calculating an inclination of level of the received signals that continue in a predetermined direction, the inclination being a rate of change in the received signal level per predetermined range in the predetermined direction, and a rain/snow reflection determining module for determining whether the received signals are reflection signals from at least one of rain and snow by using the inclination calculated by the inclination calculating module.

Abstract: A radar apparatus where the rate of writing detected image data into an image memory does not decrease, irrespective of an enlarged amount of the detected image data. When an azimuth direction enlargement section of a W data generator receives detected image data of a sweep, it outputs the data to an image memory, and delays the data, depending on a cycle of an azimuth direction shift timing signal. When detected image data of a next sweep is drawn into a pixel adjacent in a sweep moving direction to a pixel into which previous detected image data has been drawn and is located at the same distance in a sweep distance direction, the delayed data is compared with new data, and the greater data is drawn into the new pixel. When the delayed data is greater, this detected image data is enlarged in the azimuth direction.

Abstract: A radar apparatus is provided which correctly combines and displays detected data obtained from a plurality of radar antennas. Detected data obtained from a radar antenna 11 is subjected to a correlation process in a correlator 91A. Detected data obtained from a radar antenna 21 is subjected to a correlation process in a correlator 91B. A mask image which designates the same address as that of the correlated data from the radar antenna 21 is set by a mask area generator 32 and is written into a mask image memory 62. For the correlated data from the correlators 91A and 91B, addresses corresponding to installed positions of the radar antennas 11 and 21 are set. For a process image memory 902B of the correlator 91B and the mask image memory 62, a common address is set. Correlated data input in accordance with mask data is stored in a display image memory 61 in accordance with an address set in a display screen and is also output to a display device 10.

Abstract: A radar apparatus is provided in which an interpolated sweep between adjacent real sweeps is formed irrespective of an interval between the real sweeps, and image data corresponding to one cycle of sweeping can be certainly updated. A sweep azimuth generator 12 generates and outputs an azimuth of an interpolated sweep interpolated between a current real sweep azimuth and the previous real sweep azimuth based on the current real sweep azimuth and the previous real sweep azimuth, to a draw address generator 7. A sweep data generator 11 performs a linear interpolation process based on solitariness removed data of current real sweep data read from a sweep memory 4, and the previous solitariness removed real sweep data stored therein to generate and output interpolated sweep data between these real sweeps to an image memory 8.

Abstract: There is configured a radar or similar device that outputs received data that is currently being received and scan correlated image data in parallel with each other. Scan correlated image data and display image data resulting from received data from a display video memory 13 are input into a transitional data generator 11, and the transitional data generator 11 generates transitional data that represents an intermediate value and gradually changes from the received data into the scan correlated image data, using these signals, and inputs the transitional data into a selector 12. The received data, a FIRST or a LAST signal, and the transitional data are input into the selector 12, and the selector 12 outputs the received data if FIRST=1, and outputs the transitional data if FIRST=0, to the display video memory 13. This image data is fed back to the transitional data generator 11, and therefore it gradually changes from the received data into the scan correlated image data.

Abstract: A radar device is realized in which an object and extraneous waves such as radar interference or white noise are distinguished and displayed in different display forms. Subtraction Flag Generator 6 determines the time-wise continuity and the planar consecutiveness of target echo data. The time-wise continuity is an amount that indicates the extent to which significant echo data continued to be present at the same position, and is obtained from the echo data of a past predetermined number of sweep rotations. Planar consecutiveness indicates the extent to which significant echo data is present around target echo data, and is obtained by acquiring in a planar fashion echo data for each of predetermined amounts in a distance direction and a heading direction, centered around the target echo data. When Subtraction Flag Generator 6 detects that there is either of time-wise continuity and planar consecutiveness, Subtraction Flag Generator 6 attaches a subtraction flag “1”.

Abstract: A radar device is provided that can reliably display sensed image data of an object, regardless of the state of the object (echo) within a sensed range and of the surrounding environment. A behavior data detector 11 generates current level detection data by detecting a level behavior of sensed image data X(n) handled by a W data generator 7 from sensed data x(n) that is output from a sweep memory 4. Previous behavior data constituted by level detection data of several past scans is stored in a behavior data memory 12, and the behavior detector 11 updates the previous behavior data with the current level detection data and outputs the result to the W data generator 7. Detecting characteristics of the sensed image data of corresponding pixels from the behavior data, the W data generator 7 selects filter calculation data W(n), the current sensed image data X(n) or specific filter calculation data Z(n) and outputs the selected result as written image data Y(n).

Abstract: A radar system configured to present plural echo signals in a mixed form includes an image mixer for determining display colors for individual radar image regions based on combinations of the levels of the echo signals obtained from the same locations. The image mixer classifies the combinations of the levels of the echo signals into a predetermined number of groups according to the number of the echo signals to be mixed and selects display colors for the individual groups as well as shades of each display color according to the levels of the echo signals to be mixed.