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| Number | Title | Issue Date |
| 5208785 | Broadband acoustic doppler current profiler A system and method for measuring current velocities using coded-pulse broadband acoustic signals. Autocorrelation of two phase coded pulses which are in the water during a single transmission cycle is used to calculate a Doppler frequency. The effective ... | 05/04/1993 |
| 4996533 | Single station radar ocean surface current mapper A method and system for mapping ocean currents with a single radar. The radar is a pulsed monostatic radar operating in the HF/VHF range using a single transmitting antenna with a wide beam width. There is a linear array of antennas, each with its own rec... | 02/26/1991 |
| 4891976 | Device employing resonant chambers to determine wind characteristics An apparatus for determining wind characteristics, including compass direction and inclination to the horizontal, includes a hemispherical frame on which a plurality of resonant chambers are mounted, defined by tubes with axes passing through the center o... | 01/09/1990 |
| 4890488 | Ultrasonic anemometer In the ultrasonic anemometer, ultrasonic emitting probes (E1-E4) and receiving probes (R1-R4) are mounted to define at least three different paths for propagation of ultrasonic signals in the air, and means (20) are provided for measuring the ultrasonic s... | 01/02/1990 |
| 4882931 | Method and an apparatus for determining the velocity, direction and other magnitudes of a flow, in particular a gas flow A method and an apparatus for determining the velocity, direction and other magnitudes of a flow, in particular a gas flow, in which a strongly damped acoustic signal is emitted by a first transducer in a first direction through the flow towards a second ... | 11/28/1989 |
| 4831874 | Paradac wind measurement system This invention relates to a parametric source Doppler acoustic wind profiler for measuring atmospheric wind conditions. It includes a parametric acoustic source excited by a transmitter generating a pair of primary frequencies and radiates an intermodulat... | 05/23/1989 |
| 4782697 | Acoustic current meter An acoustic travel time flow meter, for use in measuring turbulent vector flow data, capable of extended deployment in which acoustic pulse generation and measurement are interleaved to conserve battery power and compressed data, sufficient to reconstruct... | 11/08/1988 |
| 4760743 | Acoustic scintillation liquid flow measurement A system and method are disclosed for acoustic scintillation liquid flow measurement. Measurement is carried out by acoustic beams transmitted perpendicular to the direction the component of liquid flow to be measured, with both phase and amplitude measur... | 08/02/1988 |
| 4573352 | Apparatus for measuring wind-speed and/or direction Apparatus for measuring windspeed and/or direction with the aid of a sound-wave transmitter (25) and a receiver (25) for receiving reflected sound waves, in which apparatus the sound waves (25a) are transmitted in a multiplicity of directions, and in whic... | 03/04/1986 |
| 4558594 | Phased array acoustic antenna A system for remote measurement of wind velocity in the atmosphere, operating from ground level. An array of acoustic transducer elements which provide for transmitting a beam of acoustic energy along a path and receiving such transmitted energy as scatte... | 12/17/1985 |
| 4552016 | Sensor for currentmeter A sensor for a currentmeter includes a supporting member which is provided to support a pair of transmitter/receiver units which rotate around an axis that is not parallel to (i.e.-intersects) a transmission path of supersonic waves which propagate betwee... | 11/12/1985 |
| 4481517 | Echometry device and method Devices and methods are disclosed for remote measurment of temperature (and velocity) profiles in a fluid medium (i.e., the atmosphere and/or oceans). Each device, herein called an echometer, and method are capable of providing remote measurements of temp... | 11/06/1984 |
| 4391136 | Three-axis current meter A three-axis current meter for measuring all three components of current velocity in the absence of self-interference caused by the sensor supports. Acoustic transducers for measuring the current components are mounted in "fingers" which are pointed in th... | 07/05/1983 |
| 4351188 | Method and apparatus for remote measurement of wind direction and speed in the atmosphere An acoustic wave source and a radio wave source are installed close to each other on the ground. When an acoustic wave pulse is transmitted vertically into the atmosphere by the acoustic wave source, spherical wavefronts formed in the atmosphere by the ac... | 09/28/1982 |
| 4336606 | Wind speed measurement Wind is the large-scale movement of air from one place to another. It is usual for the air to become horizontally stratified, the layers nearer the ground moving more slowly than or in a different direction to those higher up. This change of wind speed wi... | 06/22/1982 |
| 4311045 | Device for measuring sea currents at great depths A device for measuring sea currents at great depths as a function of the depth. A spherical shaped plunger having negative floatability is dropped from a boat and descends to the bottom of the sea, releases its ballast and rises to the surface where it is... | 01/19/1982 |
| 4308749 | Device for measuring in real time sea currents in deep water A device for measuring in real time sea currents in deep water possibly exceeding 6000 m, as a function of the depth. A spherical shaped plunger having negative floatability is dropped from a boat and descends to the bottom of the sea, releases its ballast and... | 01/05/1982 |
| 4286462 | Acoustic detection of wind speed and direction at various altitudes An acoustic apparatus for ascertaining wind speed and direction at various altitudes which uses back scattered acoustic waves which are formed from acoustic pulses of predetermined frequencies, are transmitted on at least two planes and the frequency spec... | 09/01/1981 |
| 4270191 | Doppler current meter for use at great depths The invention relates to a device for measuring aquatic currents, placed on a moving boat comprising a Doppler effect sonar. The device comprises two sets of transducers and transmitting and receiving in the directions D1, D2, D... | 05/26/1981 |
| 4262545 | Acoustic fluid velocity measuring system An acoustic fluid velocity measuring system includes mutually perpendicular arms disposed in the direction of the rectangular components of the fluid velocity, with each arm supporting two transmitting and two receiving electro-acoustic transducers. Pulse... | 04/21/1981 |
| 4221128 | Acoustic current meter An acoustic current meter in which two channels have acoustic paths oriented at right angles to each other to measure orthogonal components of a current velocity. Each channel includes two transducers aimed at an acoustic mirror so that the reflected acou... | 09/09/1980 |
| 4219887 | Bistatic acoustic wind monitor system In a Doppler acoustic radar system, bistatic transmitting and receiving antennas are employed in a manner to significantly improve wind measurement performance, and to simplify equipment deployment.... | 08/26/1980 |
| 4206639 | Doppler acoustic wind sensor A system for remote measurement of wind velocity and direction. An acoustic echo transmitter for directing a beam of acoustic energy toward a zone, and a plurality of receivers for receiving acoustic energy scattered by wind in the zone, with each receive... | 06/10/1980 |
| 4174630 | Ultrasonic anemometer An ultrasonic anemometer wherein there is a fixed supporting framework, transmitter-receiver piezoelectric transducers spaced a predetermined distance apart and making known angles between them, a generator of ultrasonic waves to excite said transmitters,... | 11/20/1979 |
| 4143547 | Method and apparatus for remote measurement of variation in wind velocity An acoustic echo system transmitter and receivers for measuring signal scattering at a zone resulting from wind movement, with the receiver doppler outputs averaged to provide spectra of wind velocity. Method and apparatus for calculating the second momen... | 03/13/1979 |
| 4143548 | Measuring the speed of an aircraft A continuous wave ultrasonic wave transmitter transmits modulated waves in two opposite directions being intercepted by a forward receiver and an aft receiver. The received signals are demodulated and the relative phase is used to obtain a speed reading. ... | 03/13/1979 |
| 4138657 | Shipboard apparatus for measuring ocean currents A survey ship proceeds along a desired track as determined by precision navigational aids. A doppler sonar is programmed to receive returns from various water masses circulating at various depths between the ship and the water bottom. The doppler sonar sc... | 02/06/1979 |
| 4114438 | Devices for measuring the flow speed of a fluid Device for measuring the flow speed of a fluid, comprising sound wave transmitting-receiving probes placed in the fluid flow, wave generating means, transforming means for exploiting the electrical signals, such as amplifiers, counting circuits and integr... | 09/19/1978 |
| 4104912 | System for taking current-metering measurements A system on board which provides measurement of flow rates of a liquid layers at different depths, the provided results being corrected from error due to the craft movement, said system being proper for location and establishment of an underwater drilling... | 08/08/1978 |
| 4094193 | Acoustic system for measuring the speed of currents in a body of water An acoustic system for measuring the speed of flow or current speed of a body of water employing a measuring path through the water which extends from one shore to the other in a direction oblique to the direction of flow of the water. A triggerably measu... | 06/13/1978 |
| 4038870 | Air movement measuring apparatus An ultrasonic air movement vector and magnitude sensing apparatus using a three element ultrasonic probe and temperature sensor in combination with an electronic computational circuit to produce air movement signals indicative of magnitude and direction i... | 08/02/1977 |
| 4031756 | Ultrasonic air movement and temperature measuring apparatus An ultrasonic air movement vector, magnitude and temperature sensing apparatus using a three element ultrasonic probe with a common transmitter element sending wave energy to selectively positioned receiving elements in the probe in combination with an el... | 06/28/1977 |
| 3978726 | Fluid current meter Two pairs of acoustic transducers are provided for obtaining fluid current velocity measurements. The pairs of transducers are mounted in a supporting ring which introduces a controlled source of error in the measurement process, the configuration however... | 09/07/1976 |
| 3949605 | Acoustic current/flow measuring system A system for measuring flow of water in large bodies of water or in small pes in which an acoustic signal is transmitted simultaneously via a radio transmitter-receiver system and a projector-hydrophone acoustic system. The electrical and acoustic signals... | 04/13/1976 |
