| Patent application number | Description | Published |
|---|
| 20080239870 | Underwater Detection Device - In an under water detection for detecting the phase difference of an echo by two reception beams according to a split beam method, the difference Δθ between the phase difference of an echo detected by first and second reception beams formed in some direction and the phase difference of the echo detected by first and second reception beams which is formed in a direction rotated from the former direction concerned by a predetermined angle is detected by a phase detector. A reliability judging unit judges whether the difference Δθ detected by the phase detector is within a predetermined range or not. If the difference Δθ is within the predetermined range, an echo is displayed on a display unit. If the difference Δθ is not within the predetermined range, the echo is displayed with a specific color tone or the echo is not displayed. | 10-02-2008 |
| 20080247275 | Underwater detection apparatus - An underwater detection apparatus for detecting a target by transmitting and receiving an ultrasound signal is provided. The apparatus includes a replica memory module for storing the typical amplitude evolution of a seawall echo during a predetermined time period as a template-replica beforehand, a correlator module for determining a correlation between the amplitude evolution of an echo signal reflected from the target and the template-replica, a seawall detector module for detecting a seawall position based on the correlation, and a seawall display processor module for displaying the seawall on its position in an indicator. | 10-09-2008 |
| 20100225525 | RADAR DEVICE AND A METHOD OF DETECTING A TARGET OBJECT USING RADAR - This disclosure provides a radar device including a transmission module for sequentially transmitting two or more kinds of pulse signals having different pulse widths by a predetermined transmitting pattern, a memory module for storing a predetermined number of pulse reply data corresponding to each kind of the pulse signals, the predetermined number being number of transmissions of the kind of the pulse signals, a pulse integrating module for performing pulse integration of the pulse reply data stored in the memory module for each kind of the pulse signal, and an image generating module for generating a radar image using the results of the pulse integration. | 09-09-2010 |
| 20110102248 | METHOD AND PROGRAM FOR DISPLAYING RADAR IMAGE, AND TARGET OBJECT DETECTION SIGNAL PROCESSING DEVICE - This disclosure provides a target object detection signal processing device, which includes a reception data output module, to which a reception signal is inputted, for outputting reception data indicative of a signal level of the reception data, a scan-to-scan correlation processing module for performing scan-to-scan correlation processing between the reception data and previous reception data indicative of a reception level of previously acquired reception signal to output scan-to-scan correlation data, and an output selection module, to which the reception data and the scan-to-scan correlation data are inputted, for selectively outputting either one of the data. | 05-05-2011 |
| 20110187579 | METHOD AND DEVICE FOR TRANSMISSION, METHOD AND DEVICE FOR RECEPTION, AND METHOD AND DEVICE FOR DETECTING TARGET OBJECT - This disclosure provides a transmission device, which includes a signal generating module for generating two or more kinds of pulse-shaped signals of mutually different pulse widths, and an antenna for emitting the pulse-shaped signals to the exterior. For the two or more kinds of pulse-shaped signals generated by the signal generating module, an order of two or more kinds of pulse-shaped signals included in a predetermined time frame differs from an order of two or more kinds of pulse-shaped signals included in a different time frame. | 08-04-2011 |
| 20110298651 | METHOD AND DEVICE FOR PROCESSING SIGNAL, RADAR APPARATUS, AND PROGRAM FOR PROCESSING SIGNAL - This disclosure provides a signal processing device, which includes an echo signal input module for being inputted with echo signals caused by electromagnetic waves emitted from an antenna being reflected on one of more target objects, an echo signal level detecting module for detecting a level of each of the echo signals in association with a distance and an azimuth direction from the antenna, a level change detecting module for detecting a level change between the echo signals from locations which are close to each other where the distances from the antenna are substantially the same but the azimuth directions from the antenna are different, a pattern output module for comparing the level change with a pattern determined in advance to output a level change pattern, and an interference determining module for determining interference based on at least two of the level change patterns. | 12-08-2011 |
| 20120007766 | METHOD AND PROGRAM FOR SETTING THRESHOLD, AND METHOD, PROGRAM AND DEVICE FOR DETECTING TARGET OBJECT - This disclosure provides a method of setting a threshold according to a level of an echo signal of an unused component. The echo signals are generated by transmitting and receiving a radio wave with an antenna while the antenna revolves. The method of setting the threshold includes calculating a difference value between a level of the echo signal at an observing position and a level of the echo signal at a position comparatively on the antenna side and close to the observing position, selecting a process for setting a threshold from either one of a first threshold setting process and a second threshold setting process according to the difference value, and updating the threshold for the observing position by using the selected threshold setting processing. | 01-12-2012 |
| 20120007767 | METHOD, DEVICE AND PROGRAM FOR SETTING THRESHOLD, AND METHOD, DEVICE AND PROGRAM FOR DETECTING TARGET OBJECT - This disclosure provides a method of setting a threshold according to a level of an echo signal containing an unused component. The echo signal is generated by transmitting and receiving a radio wave with an antenna while the antenna revolves. The method includes acquiring levels of the echo signals at every predetermined distance interval and updating a threshold set for an observing position based on the level of the echo signal at the observing position, the threshold set for the observing position, and a threshold set for a position closer to the antenna than the observing position by the predetermined distance on the same sweep. | 01-12-2012 |
