G - Physics – 01 – V
Patent
G - Physics
01
V
349/13, 349/9
G01V 1/04 (2006.01) G01S 15/10 (2006.01)
Patent
CA 1277759
METHOD AND APPARATUS FOR THE GENERATION AND TRANSMISSION OF SIGNALS FOR ECHO LOCATION AND OTHER SIGNALING PURPOSES, PARTICULARLY IN GEOPHYSICAL EXPLORATION ABSTRACT A transmission from a hydroacoustic source, especially for underwater geophysical exploration, is generated in accordance with two binary codes (provided by two pulse trains or sequences having two levels and which provide a spectrum of harmonically related components). One of these codes has one more or one less harmonic component than the other. The transmission is provided with a frequency spectrum which extends between an upper and lower frequency limit by sweeping the pulse trains over an octave (2:1) frequency range, far shorter than the range of the spectrum, and utilizing one of the codes and then the other of the codes during the sweep. The spectrum of the transmission extends between two arbitrary frequencies which need not be harmonically related, notwithstanding that the sweep is limited to an octave in frequency range. By adjusting the rate at which the pulse train which defines the first code sweeps with respect to the rate at which the pulse train which defines the second code sweeps, the energy of the spectrum will be smooth and continuous, thereby avoiding introducing undesirable undulations in the autocorrelation function of the transmission.
545130
Borden Ladner Gervais Llp
Hydroacoustics Inc.
Nelson David E.
LandOfFree
Method and apparatus for the generation and transmission of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the generation and transmission of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the generation and transmission of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1219073