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
ESD protection device and method for producing the same
Error detection and recovery tool for logical volume management in a data storage system
Computer systems and methods for the query and visualization of multidimensional databases
Image forming apparatus assembled with a fixing member and a pressing member
Method, device and computer readable medium for determining whether transmission signals are present in received signals
Dehydratable hygiene articles
Spectral measurement device
  Randomly Featured Patents
Position detecting and correcting device for timepiece
Mouse with rotatable operation module
Apparatus for testing semiconductor memory
Sound reproducing apparatus and vehicle using the sound reproducing apparatus
Packaging machine for use with cartons of different sizes with minimum adjustment
Systems and methods for pipeline rehabilitation
Method of fabricating backside illuminated FET optical receiver with gallium arsenide species
Method of fabricating semiconductor device by exposing upper sidewalls of contact plug to form charge storage electrode
Vacuum cleaner brush assembly
Decorative cooking vessel