Patent ID: 9541645
Date: 2017-01-10
CPC Classifications: G01S

Claim:
1. A detecting device for detecting target objects, comprising: a transmitter configured to transmit a transmission wave at every predetermined timing; a receiver configured to generate reception signals from reflection waves of the transmission waves; a target echo signal detecting module configured to detect among the reception signals generated by the receiver, target echo signals caused by the target objects; a size calculating module configured to calculate a size of each of the target objects based on the corresponding target echo signal; and a frequency index value distribution calculating module configured to calculate frequency index values for respective size ranges based on the sizes calculated by the size calculating module, each of the frequency index values being an index of the number of the target objects, the frequency index value distribution calculating module further having a first updating submodule configured to update the frequency index value for each of the size ranges every predetermined time period, wherein the first updating submodule reduces the frequency index value for each size range at every predetermined time period.