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
Mobile electronic device
Native NAD-dependent GAPDH replaced with NADP-dependent GAPDH plus NADK
Apparatus and method for phase synchronization in radio frequency transmitters
Self-assembled, micropatterned, and radio frequency (RF) shielded biocontainers and their uses for remote spatially controlled chemical delivery
Device for accurately measuring concentration of component in blood and control method of the device
Telephone relaying apparatus, telephone relaying method, and program
Performance venue with dynamic mechanical load management system and method
  Randomly Featured Patents
Internal combustion engine piston
Method of distributing braking between the brakes of an aircraft
High speed address transition detector circuit for dynamic read/write memory
Methods of making intermediates from polyhydroxyalkanoates
Pollution monitoring apparatus
Adaptive miller cycle engine
Grooming stand for pets
Apparatus for approximation of caps of smooth line segments
Animated 3D visualization of super multivariate equations
Method and spray mould assembly for manufacturing an elastomeric skin of at least two elastomeric materials and such elastomeric skin