초록 ▼

The present invention relates to a method of detecting and classifying objects using radar. The method means that a broadband radar signal comprising wavelengths that coincide with characteristic lengths of targets to be detected and classified is transmitted. Further, a returned echo signal is rece

The present invention relates to a method of detecting and classifying objects using radar. The method means that a broadband radar signal comprising wavelengths that coincide with characteristic lengths of targets to be detected and classified is transmitted. Further, a returned echo signal is received and analysed, at which a signal analysis in a combined time-frequency domain is used, which comprises determining characteristic frequencies in the signal return and their mutual time relations. Finally, a comparison with the corresponding stored values of an analysis of possible targets is performed.

대표청구항 ▼

[ What is claimed is:] [1.]1. An essentially aspect independent method of detecting and classifying known and unknown targets using radar, comprising the steps of:transmitting a wideband radar signal that includes wavelengths which coincide with characteristic overall lengths of targets to be detect

[ What is claimed is:] [1.]1. An essentially aspect independent method of detecting and classifying known and unknown targets using radar, comprising the steps of:transmitting a wideband radar signal that includes wavelengths which coincide with characteristic overall lengths of targets to be detected and classified so as to obtain target signature information having limited aspect dependence;receiving the radar signal as a returned signal;detecting and determining characteristic frequencies in the returned signal as well as mutual time relations of said characteristic frequencies;storing a plurality of values for characteristic frequencies and corresponding mutual time relations for a plurality of known targets in an analyzer; andanalyzing the characteristic frequencies and mutual time relations in the returned signal by comparing the returned signal characteristic frequencies and mutual time relations with the stored characteristic frequencies and mutual time relations values of known targets to identify the unknown target.