|
Match
|
Document |
Document Title |
|
|
7343261 |
Underwater sensor transmitter probe
An electronic apparatus for measuring water speed and water temperature then periodically transmitting said data during controlled depth fishing wherein an underwater probe is secured to and...
|
|
|
5185605 |
Dive profile recorder
A dive profile recorder for monitoring conditions encountered by a diver under water includes a plurality of transducers to be carried by a diver for generating electrical signals representative of...
|
|
|
4926395 |
Method and system for measuring sound velocity
A method and system for determining the speed of sound in a fluidic medium by determining the travel time of an acoustical signal a predetermined distance in a fluidic medium by generating a...
|
|
|
4044611 |
Expendable oceanography probe
An expendable oceanography probe has a hollow cylindrical housing, a front end element in the form of a weight fitted into the lower end of the cylindrical housing, a sensor, such as a thermistor,...
|
|
|
4007633 |
Method of determining the physical characteristics of a sea floor
A hollow, projectile-shaped body containing an acoustical transducer is rased into the sea such that the body descends in free fall until it strikes and penetrates the sea floor, coming to a rest...
|
|
|
3842398 |
APPARATUS AND METHOD FOR DEPLOYMENT OF EXPENDABLE VELOCIMETER TO ELIMINATE DOPPLER SHIFT ERROR IN THE MEASUREMENTS
A correction is applied to a sound velocity vs. depth profile in order to eliminate a Doppler shift caused by the relative speed between a transmitter on a velocimeter dropping through the ocean...
|
|
|
3715709 |
SING-AROUND VELOCIMETER
A sing-around velocimeter having a fixed sound path length so that the repetition rate is a function of the velocity of sound in the fluid and consequently of the characteristics of the fluid. A...
|
|
|
3697936 |
SOUND VELOCIMETER
A sound velocimeter for measuring the velocity of sound in a fluid wherein the oscillator frequency is adjusted depending upon the relative position in time of the received signal with respect to...
|
|
|
3673555 |
MODULATED CARRIER ACOUSTIC BEACON
An underwater beacon for transmitting an acoustic signal characterized so as to facilitate accurate determination of the position of an acoustic receiver array relative to the beacon. The beacon...
|
|
|
3611276 |
INSTRUMENT FOR DIRECT MEASUREMENT OF THE VELOCITY OF SOUND IN A FLUID
The invention provides a free-falling underwater body which has a weight-drag characteristic that causes a stable rate of fall through water. The body contains an oscillator connected to a...
|
|
|
3602876 |
METHOD OF DETERMINING TERMINAL VELOCITY OF A FREE-FALLING BODY
The disclosure concerns a method for determining the terminal velocity in ter of bodies having various hull shapes through the use of doppler techniques wherein a coherent oscillator on the body is...
|
|
|
3593256 |
DOPPLER CORRECTION TECHNIQUE
Method and means for complete correction of Doppler shift in a transmitted pectrum of individual frequencies, or tones, constituting a multitone, coded pulse system in which the lowest (reference)...
|