G - Physics – 01 – S
Patent
G - Physics
01
S
343/54
G01S 7/04 (2006.01)
Patent
CA 1251545
ABSTRACT A method of detection and identification of one or more remote objects by transmitting wave energy towards the object and receiving wave energy reflected from the object as well as processing of information associated with the wave energy received. The following novel and specific combination of steps is characteristic to the method according to the invention - a) said processing comprises a number of separate signal parameters pertaining to the wave energy received, said parameters together forming a measured signature relating to the object, b) the measured signature is compared with a number of prestored signatures comprising the same separate sig- nal parameters relating to known objects being of interest to the detection and the identification, c) there is effected a recording of which signatures among the prestored signatures which within predeter- mined tolerances correspond to the measured signature, d) subsequent transmission and reception of wave energy is used for updating the separate parameters and thereby the measured signature, e) the updated measured signature is compared with the re- corded restored signatures for updated recording of a smaller number of prestored signatures which within pre- determined tolerances correspond to the updated measured signature, f) and repeating steps d) and e) until there remains a small number of recorded prestored signatures, pre- ferably only one signature, which defines a small number of objects, preferably only one such object, being of interest. The method is primarily intended for radar systems, but other uses are also possible, such as in sonar systems.
498720
Gjessing Dag K.t.
Hjelmstad Jens F.
Fetherstonhaugh & Co.
Norges Teknisk-Naturvitenskapelige Forskningsrad
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