Resources Contact Us Home
Method of operating a continuous wave sonar system

Image Number 3 for United States Patent #6128249.

An improved method is provided for operating a continuous wave sonar syst At time of transmission, a plurality of acoustic pulses are transmitted one right after another. Each pulse has a unique frequency and is of a time duration that is approximately one second long. The pulses are characterized by a separation frequency representing a difference in frequency between numerically successive frequencies. However, the pulses are staggered with respect to frequency. In the preferred embodiment, each successively transmitted one of the pulses is separated in frequency from an immediately preceding transmitted one of the pulses by an amount greater than the separation frequency. These multiple pulses seperated in time and in frequency, reduce the effects of frequency speading caused by the medium, resulting in a sonar with enhanced detection performance.

  Recently Added Patents
Resolution setting apparatus, resolution setting method, and recording medium recording a resolution setting program when a television is used as a monitor of a computer
Spray drying vancomycin
Elastic wave device having a capacitive electrode on the piezoelectric substrate
Promoting content
Electronic device
Combined high and low frequency stimulation therapy
  Randomly Featured Patents
Stripe-guide TJS laser
Compressor having piston assembly
Certain nitro-3-pyrinamines and 3-oxy-analogues
Methods of diagnosis and treatment of meniere disease
Telephone outlet with packet telephony adaptor, and a network using same
Watch dial
Portable radio telephone
Lubricating oil composition having improved temperature characteristics
Bible quiz game
Tape drive door operator