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Covert underwater acoustic communications
2010
Journal of the Acoustical Society of America
Low probability of detection ͑LPD͒ communications are conducted at a low received signal-to-noise ratio ͑SNR͒ to deter eavesdroppers to sense the presence of the transmitted signal. Successful detection at intended receiver heavily relies on the processing gain achieved by employing the direct-sequence spread-spectrum ͑DSSS͒ technique. For scenarios that lack a sufficiently low SNR to maintain LPD, another metric, referred to as low probability of interception ͑LPI͒, is of interest to protect
doi:10.1121/1.3493454
pmid:21110585
fatcat:mjuywxav25fp7kdbkwoo6ea26q