초록 ▼

A method of assessing radar pulses in a passive, i.e. receive-only, radar system to distinguish pulses due to a particular target from pulses due to other targets from noise, interference, etc. Received pulses are assessed, without reference to pulse transmission information, in respect of a number

A method of assessing radar pulses in a passive, i.e. receive-only, radar system to distinguish pulses due to a particular target from pulses due to other targets from noise, interference, etc. Received pulses are assessed, without reference to pulse transmission information, in respect of a number of characteristics by comparing each characteristic of a pulse with the mean value of the respective characteristic for pulses previously received. Using a probability process, confidence values for the pulse can be calculated. By combining the confidence values for each characteristic, an overall confidence value is obtained for the pulse so that it can be determined whether it arises from the particular target.

대표청구항 ▼

A method of assessing target radar pulses received by an antenna of a passive radar receiver in respect of a plurality of pulse characteristics comprising the steps of: (a) determining value of at least two said characteristics for a received pulse; (b) determining the mean value of each said charac

A method of assessing target radar pulses received by an antenna of a passive radar receiver in respect of a plurality of pulse characteristics comprising the steps of: (a) determining value of at least two said characteristics for a received pulse; (b) determining the mean value of each said characteristic for previously received pulses; (c) comparing the value of each said characteristic for a pulse with said mean value and deriving an increment; (d) subjecting each said increment to a probability process to provide a confidence value for each pulse characteristic; (e) combining the confidence values for said at least two characteristics to provide an overall confidence value for said pulse; and (f) performing all of said steps without reference to pulse transmission information.