Patent ID: 8498958
Filing Date: 2013-07-30
Classification: G01S

Abstract:
1. A moving obstacle deciding apparatus comprising: a search signal transmitting and receiving section for transmitting a search signal, and for receiving the search signal reflected from a search target as a detection signal; a decision reference value calculating section for dividing a range of a transmission period of the search signal into a prescribed number of divisions, for calculating a decision reference value based on an integral value of the detection signal occurring in each of the divisions, and for dividing a detection area, which is a range of the search signal transmitted from the search signal transmitting and receiving section, into a plurality of divisional areas in accordance with distance from the search signal transmitting and receiving section or in accordance with time up to reception of the detection signal; and a deciding section for making a decision as to whether the search target is a moving obstacle or not in accordance with a compared result of a difference value between the decision reference values obtained in time-series searches by the decision reference value calculating section with a prescribed threshold for each of the divisional areas, wherein the thresholds of the divisional areas are set in a manner as to become smaller as separated farther away from the search signal transmitting and receiving section.