公开(公告)号：US09935797B1

公开(公告)日：2018-04-03

申请号：US15479890

申请日：2017-04-05

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： James W Lang ,  Michael J Berry ,  John H Chongoushian

IPC: H03D1/04 ,  H04L25/08 ,  H04L27/26 ,  H04W72/06

CPC classification number: H04L25/08 ,  H04J11/0036

Abstract: A method for implementing interference mitigation in wireless network such as a Link 16 network does not require interference recognition and does not degrade signal detection even in the absence of interference. An unmitigated correlation score is obtained by correlating received, unmitigated preamble symbols with expected symbols. At least one of the input signals is also correlated after mitigation to obtain a mitigated signal. A mitigated correlation sore is obtained from the mitigated signals, and a mixed correlation score is obtained by combining mitigated and unmitigated signals. A signal is detected if any of the correlation scores exceeds a corresponding threshold. Embodiments use the unmitigated correlation for subsequent message time of arrival determination if the unmitigated correlation score is above its detection threshold. In embodiments, mitigation is applied to only one of the message frequencies. Implementation of the disclosed method does not require excessive additional electronic resources.