A system and method for generating three-dimensional (3D) images using sonar technology comprises a circular phased array to create 3D point clouds from the echoes of a single sonar ping and may be configured to measure Doppler shift. The circular phased array is a circular receiver array that is combined with a single, wide opening angle projector that transmits at least one pulse of acoustic energy. The echoes from this pulse are received by the circular array. The signals from the receiver elements are combined using Delay and Sum beamforming processes to perform spatial filtering with resolution as discussed above. The system and method combine advantages of Mills Cross systems and square arrays, providing high-resolution, instantaneous 3D imaging employing a 1D array, leading to a more efficient and scalable design.
A system and method for generating three-dimensional (3D) images using sonar technology comprises a circular phased array to create 3D point clouds from the echoes of a single sonar ping and may be configured to measure Doppler shift. The circular phased array is a circular receiver array that is combined with a single, wide opening angle projector that transmits at least one pulse of acoustic energy. The echoes from this pulse are received by the circular array. The signals from the receiver elements are combined using Delay and Sum beamforming processes to perform spatial filtering with resolution as discussed above. The system and method combine advantages of Mills Cross systems and square arrays, providing high-resolution, instantaneous 3D imaging employing a 1D array, leading to a more efficient and scalable design.
A watercraft angle of attack system includes sensors having a position locator; a heading sensor; a tilt sensor; an acoustic Doppler velocity sensor that measures velocity of the boat relative to a volume of water remote from the boat so as to reduce the boat-induced disturbance of the velocity in the volume; and a processor programmed to receive real time data from the sensors; and to compute and display angle of attack of the watercraft relative to the water.
G01B 21/22 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer des angles ou des conicitésDispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour tester l'alignement des axes
G01S 11/10 - Systèmes pour déterminer la distance ou la vitesse sans utiliser la réflexion ou la reradiation utilisant les ondes radioélectriques utilisant l'effet Doppler
B63G 1/00 - Aménagements relatifs à l'artillerie ou au lancement des missilesNavires caractérisés à cet effet
4.
Acoustic doppler dual current profiler system and method
An AD2CP includes at least one transducer assembly emitting sets of slanted directional acoustic beams and receiving the echoes; and electronics that processes the echoes into depth cells and computes velocity in each depth cell. The AD2CP is configured so that each beam set has a profiling catenation, at least two of which are different, and the AD2CP is configured so that the emitting, receiving and processing operate contemporaneously.
G01S 15/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes acoustiques, p. ex. systèmes sonar
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
5.
Acoustic doppler dual current profiler system and method
An AD2CP includes at least one transducer assembly emitting sets of slanted directional acoustic beams and receiving the echoes; and electronics that processes the echoes into depth cells and computes velocity in each depth cell. The AD2CP is configured so that each beam set has a profiling catenation, at least two of which are different, and the AD2CP is configured so that the emitting, receiving and processing operate contemporaneously.
G01S 15/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes acoustiques, p. ex. systèmes sonar
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
