Patent ID: 9712275
Date: 2017-07-18
CPC Classifications: H01Q,H04K

Claim:
1. A method for waveform-enabled jammer excision (WEJE), the method comprising: performing a jammer measurement across each frequency sub-band of a full-spreading bandwidth during a look-through window comprising a predefined frequency-hop time-slot when no signal-of-interest (SOI) is transmitting and obtaining a jammer signal, wherein the look-through window is characterized by a frequency and a bandwidth; performing a SOI-plus-jammer measurement and obtaining a SOI-plus-jammer signal when both the jammer signal and the SOI are present; determining optimal weights that maximize a SOI-to-jammer power ratio by using the measured jammer signal and SOI-plus-jammer signal; optimally weighing and combining SOI-plus-jammer signals associated with a number of antenna elements to copy the SOI and null the jammer signal based on the determined optimal weights; and performing beam-forming and jammer signal nulling using three multi-beam antennas (MBAs) arranged in a triangle on a satellite, and forming 2*B jammer nulls, wherein each MBA includes B beams and B is greater than seven.