PASSIVE RADAR SYSTEM

• Main Authors: NAGANO TAKAFUMI, TANABE TOMOKO, IWAMOTO TAKASHI
• Format: Patent
• Language: English
• Published: 18.09.2008
• 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

PROBLEM TO BE SOLVED: To provide a passive radar system capable of estimating easily a reflection point, without using complicated calculation. SOLUTION: This passive radar system 100 includes a signal reception part 101 for receiving signals transmitted from a plurality of transmitters, a positioning computation part 102 for calculating a propagation delay time difference between a direct wave reached from each transmitter and each reflected wave arrived after reflected by a reflecting object in each of the plurality of transmitters, using the signals received by the signal reception part 101, and for calculating positions of the plurality of transmitters, and the reception part, a reflection position estimating part 103 for estimating a reflection position of the reflected wave, using a plurality of route differences obtained from the propagation delay time differences calculated in the positioning computation part 102, based on a geometric restriction condition when assuming that plane waves are transmitted from the plurality of transmitters, and a display part 104 for displaying the estimated reflection position. COPYRIGHT: (C)2008,JPO&INPIT