Matched detector/channelizer with adaptive threshold
AssigneeLockheed Martin Corporation
InventorRobert Anderson
Life of this patent
Estimating the term…
Abstract
A method of detecting a signal in an input channel of a receiver includes applying each of a plurality of pre-detection bandwidths to an input signal. The method can include deriving, in a cascaded fashion, a plurality of pre-detection bandwidths for the input channel, and determining a temporal and spectral extent of pulsed energy in each of the plurality of pre-detection bandwidths. The derivation of the pre-detection bandwidths for the input channel can be performed by dividing the input channel into a sequence of smaller bandwidth sub-channels, so that the number of sub-channels is determined by how much bandwidth and pulse width range is able to be covered by a single detector.
Claims12
A method of detecting pulsed energy in a data channel in the presence of noise, comprising:
- receiving a pulsed energy using an antenna;
- analyzing the received pulsed energy at a plurality of pre-detection bandwidths to determine a temporal and spectral extent of the pulsed energy of potential interest within particular frequency bands of the data channel;
- determining whether the temporal and spectral extent of the pulsed energy meets predetermined criteria;
- and
- outputting only sections of the particular frequency bands' spectra occupied by the pulsed energy meeting the predetermined criteria.
Dependencies are inferred from the claim text.