Abstract:
PROBLEM TO BE SOLVED: To provide a target detection system, including transceivers comprised of a radar and a sonar or a rider, capable of effectively capturing a target even under such an environment that an S/N ratio is low and a reflection signal is nearly buried in noise.SOLUTION: A target detection system includes: at least two transceivers 1 and 2 for target detection which are disposed at such different installation positions that azimuth setting is enabled, respectively; and a main control device 10 including position calculation means 12 for specifying a position of a target M on the basis of reflection information relating to azimuth of the target M detected by the transceivers 1 and 2. The position calculation means 12 includes a function for specifying the position of the target M by superimposing the information relating to the azimuth of the targets M obtained by the two transceivers 1 and 2 with positional information of the transceivers 1 and 2 as criteria.
Abstract:
PROBLEM TO BE SOLVED: To provide an object detector which determines the reception time of a reception wave more precisely and improves the accuracy of detecting an object. SOLUTION: As for an envelope curve W5, its peak is detected. An approximate line L is acquired having the maximum change amount δ -1 in a change amount increasing period in which a change amount δ of the envelope curve W5 moving toward the peak per predetermined unit time TS continues to increase as the slope. Time XP at which the voltage value of the approximate line L becomes predetermined standard voltage VZ is acquired as the reception time t R of a reflected wave. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To correctly manage the arrangement position and shape of electronic equipment in a space of a room or a warehouse. SOLUTION: Each of sensors 21, 22, 23 broadcast-transmits a beacon signal (BEACON), e.g., into a managed object space and uses an acknowledge signal (ACK) corresponding to the beacon signal for detecting a device ID of each device 31 and a distance from each device 31. A host device 11 detects the position of each device 31 in accordance with the distance from each device 31 detected by each of the sensors 21, 22, 23 and the position of each of the sensors 21, 22, 23. Besides, the host device 11 uses the device ID for executing radio communication with each device 31 to acquire shape information from each device 31. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
The invention is a method and apparatus for determining the locations of a plurality of actual objects based on the output of a plurality of range sensors. A multiplicity of range measurements are obtained from a plurality of sensors, each sensor capable of providing a multiplicity of range measurements. The range measurements from the plurality of sensors are correlated with each other to generate a list of potential objects and to order that list of potential objects from highest to lowest likelihood of being an actual object. The order may be based upon a cumulative error of the individual sensor measurements upon which the potential object is based. The ordered list of potential objects is then pared down to a smaller list of actual objects by assuming that the potential object highest in the ordered list as an actual object, and then removing from the list all other lower-ordered potential objects that are based on any of the range measurements upon which the selected object is based. The process is repeated for the next highest potential object remaining on the list until all potential objects on the list have either been selected as an actual object or removed from the list.