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
Regenerative braking control to mitigate powertrain oscillation
Method for assembling a camera module, and camera module
Method for eliciting an immune response to human telomerase reverse transcriptase
Wiring structure in a semiconductor device, method of forming the wiring structure, semiconductor device including the wiring structure and method of manufacturing the semiconductor device
Fire detector
Detecting mirrors on the web
Die seal ring
  Randomly Featured Patents
Display case
Post chemical mechanical polishing cleaning solution for 2.45T CoFeNi structures of thin film magnetic heads
Laser etching method
Apparatus and method for networking driver protocol enhancement
Integrated circuit internal heating system and method therefor
Filter cartridge assembly
Mechanic drive apparatus
Gate drive voltage boost schemes for memory array
Method and system for high performance model-based personalization
Shoulder and waist harness for use with a wheelchair