INFORMATION PROCESSING DEVICE, BEHAVIOR ANALYSIS SYSTEM, BEHAVIOR ANALYSIS METHOD, AND PROGRAM

• Main Authors: TODA Naoto, SHINGYOJI Ryuji, NISHIZAKA Nobuyoshi
• Format: Patent
• Language: English; French; German
• Published: 28.12.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

Provided are an information processing device, a behavior analysis system, a behavior analysis method, and a program capable of accurately acquiring position information for effectively using a prediction ephemeris acquired from the outside. A sensor device 2, that serves as an information processing device, is provided with: a communication processing unit 101 which communicates with a user terminal 3 serving as a communication device; a positioning processing unit 102 which acquires a current position by using the prediction ephemeris; a prediction ephemeris acquisition unit 104 which executes a process for acquiring the prediction ephemeris from the user terminal 3; a positioning information storage unit 190 which stores position information that indicates the current position acquired by the positioning processing unit 102; a position information acquisition unit 105 which repeats, at intervals, a process for acquiring, from the user terminal 3, communication device position information that indicates the position of the user terminal 3 and updating the position information on the basis of the communication device position information; and a communication interval setting unit 107 which shortens the intervals for acquiring the communication device position information when the discrepancy, between the communication device position information and the stored position information prior to being updated, is larger than a prescribed reference.