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
Hydrolases, nucleic acids encoding them and methods for making and using them
TRPM8 antagonists and their use in treatments
Reusing data in user run book automation
Single well reservoir characterization apparatus and methods
Method and apparatus for a cryptographically assisted commercial network system designed to facilitate buyer-driven conditional purchase offers
Light irradiation element, image forming structure, and image forming apparatus
Antenna for an automobile
  Randomly Featured Patents
Methods of producing resistant starch and products formed therefrom
Active air flow adjustable fan
Method of forming a uniform carbon nanotube electron-emission layer in a field emission display
Line driver calibration circuit
System and method for turbulence detection
Pendulum-mounted bucket with control cam for a bucket conveyor
Origanum plant named `Zorba White`
Component including a zirconium alloy, a method for producing said component, and a nuclear plant including said component
End piece for the bottom rail of a venetian blind
Memory management system and method