Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Frequency interrupt continuous transmit active sonar transmission and signal processing technique










Image Number 10 for United States Patent #5150335.

In a time continuous transmit active sonar system the frequency of the transmitted waveform is interrupted at predetermined intervals so that a frequency discontinuity in the transmitted waveform occurs at each interruption. The starting and ending frequencies at the beginning and end of the interruptions provide indications for properly resolving the range/Doppler ambiguity that is inherent in prior continuous transmit sonar systems. The transmitted signal may be frequency modulated. Further, the frequency of the transmitted waveform may be rapidly changed and/or multiple frequency waveforms may be transmitted within the same time interval. An existing passive sonar detection system may be modified to include an active continuous transmit sonar system whose echo returns may be processed by the passive system, thereby achieving benefits over conventional active pulsed sonar systems.








 
 
  Recently Added Patents
Query processing with specialized query operators
Mobile communication terminal provided with handsfree function and controlling method thereof
Coordinated garbage collection for raid array of solid state disks
Optical power measurement method, optical line terminal and optical network unit
LED lighting module
Use of LPA for encouraging pregnancy, and fertility agent
Composite filtration membranes and methods of preparation thereof
  Randomly Featured Patents
Laser assembly with integral beam-shaping lens
Bale feeder device
High wind cable support systems
Carbocyclic nucleosides containing bicycle rings, oligonucleotides therefrom, process for their preparation, their use and intermediates
Method to universally connect applications data streams to VRML content
Carbocyclic and heterocyclic fused-ring quinolinecarboxylic acids useful as immunosuppressive agents
Apparatus for automatic coil feed
Photoconductor drum having core element with roughened surface
Automated updates of software and systems
Method for production of organic fluorine compound