Follow Us:

View Item 
  •   CMRE Open Library Home
  • CMRE Publications
  • Reprints
  • View Item
  •   CMRE Open Library Home
  • CMRE Publications
  • Reprints
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Low frequency active sonar (LFA) bottom loss requirements

Thumbnail
Abstract
A bottom interaction simulator was developed to investigate LFA bottom bounce losses, i.e., the mismatch losses, which occur in matched filter processing of bottom and target reflected signals due to the time spreading (dispersion) of the signal caused by these boundaries. The motivation behind this was the need to address bottom loss data base deticiencies to aid in future upgrades which would support LFA sonar. The simulator provided a "tool" to examine the mismatch issue and determine the mismatch losses in a low costilow risk approach to bound the problem. The mismatch loss, the additional loss over that of a non-spread signal, is given for a number of realistic situations where measured impulse response functions represent the spreads in a series of convolutions. The target was a 100: 1 scale model of a simple cylindrical shape with rounded endcaps. The bottom was reprcsl!nted by previously obtained SACLANT Undersea Research Center impulse response data . The results indicate that only under ideal (no spread) conditions will a total energy bottom loss data base support LF A sonar performance predictions where coherent processing is used. This highlights the need for the bottom loss data base to include the effects of these spreads.

URI
http://hdl.handle.net/20.500.12489/141

Report Number
CP-42/2

Source
In: Low frequency active sonar (SACLANTCEN Conference Proceedings CP-42), vol. 2, 1993, pp. F/19-1 - F/19-19.

Collections
  • Reprints

Date
1993/08

Author(s)
Jensen, Edmond P.
; 
Sabbadini, Fernando

Show full item record
CP-42-2_Jensen_LowFrequencyActiveSonar.pdf (5.707Mb)

Browse

All of CMRE Open LibraryCommunities & CollectionsBy Issue DateAuthor(s)TitlesSubjectsTypeThis CollectionBy Issue DateAuthor(s)TitlesSubjectsType

My Account

LoginRegister

  • Contact Us
  • Send Feedback
  • Employment
  • Procurement
  • Fact Sheets
  • News Feed
  • Conditions of Use
  • Publications Feed
  • Press Release
  • News Archive
  • STO (Science and Technology Organization)
  • Find us on Facebook
  • Follow us on Twitter
  • Watch us on Youtube
  • Webmail
 

 

© 2018 STO-CMRE
Powered by KnowledgeArc