Abstract:
PURPOSE: A phantom target and a multi-sensor target tracking system including the same are provided to correctly and easily verify a simultaneous tracking function. CONSTITUTION: A phantom target(110) simultaneously uses an infrared ray sensor and an electric wave sensor. A radiation source point of the infrared ray sensor and a radiation source point of the electric wave sensor are the same, and are formed to simultaneously emit heat and radio waves. [Reference numerals] (120) Target tracking device; (125) Infrared ray sensor and electric wave sensor; (AA) Trace of a target moving device
Abstract:
PURPOSE: A distance measuring unit and a method thereof are provided to measure a distance in a high repetition rate pulse repetition frequency radar which is impossible to measure an actual distance. CONSTITUTION: A distance measuring unit includes a phase modulation unit(110), a filter unit(130) and a distance calculation unit(150). The phase modulation unit shifts a phase of a received pulse called reflecting pulse of an input transmitted pulse between transmitting pulses by 180 degrees. The filter unit filters a phase-shifted signal to pass so that one spectrum of phase-shifted spectra may pass through the filter. The distance calculation unit calculates a distance of a target using the time point of the phase modulation unit operation and the time point of the previously transmitting the pulse. [Reference numerals] (110) Phase modulation unit; (130) Filter unit; (150) Distance calculation unit; (AA) Radar, antenna