An in-situ pressure sensor bias determination apparatus (300) comprises a measurement pressure sensor (400), a reference pressure sensor (402), an electronically controllable pressure adjustment device (406), and a fluid conduit network (410) having an ambient access port (412). The measurement pressure sensor (400) has a greater operating pressure range than the reference pressure sensor (402). The measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406) are sealingly coupled to the fluid conduit network (410) so as to define a volume that is open only at the ambient access port (412). An ambient isolation device (420) is arranged to isolate selectively the ambient access port (412) from the measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406), thereby closing the open volume.

An in-situ pressure sensor bias determination apparatus (300) comprises a measurement pressure sensor (400), a reference pressure sensor (402), an electronically controllable pressure adjustment device (406), and a fluid conduit network (410) having an ambient access port (412). The measurement pressure sensor (400) has a greater operating pressure range than the reference pressure sensor (402). The measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406) are sealingly coupled to the fluid conduit network (410) so as to define a volume that is open only at the ambient access port (412). An ambient isolation device (420) is arranged to isolate selectively the ambient access port (412) from the measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406), thereby closing the open volume.

A method and a device for determining and displaying a flyaway distance for a rotorcraft in the event of an engine of the rotorcraft failing, and while taking account of the height of waves being overflown by the rotorcraft. The method includes a first determination for determining a flyaway distance of the rotorcraft in the event of a failure of an engine and under current flying conditions, a second determination for determining a maximum altitude of the waves being overflown by the rotorcraft and displaying the flyaway distance and the maximum altitude on a display instrument of the rotorcraft indicating the relative height of the rotorcraft or else its altitude. A safety margin is preferably added to the maximum altitude of the waves, or else to the flyaway distance of the rotorcraft.

A marine electronic device is provided including a user interface, a processor, and a memory having computer program code stored thereon. The memory and the computer program code are configured to, with the processor, cause the marine electronic device to receive a first user input defining a minimum water depth value for a route on a body of water, receive a second user input defining a maximum water depth value for the route, cause a chart to be displayed on the user interface, receive a third user input directed to the chart defining an ending point, and generate a continuous route from a starting location to an ending location corresponding to the ending point based on the maximum water depth value and the minimum water depth value.

Refining an ecological niche model (ENM) associated with a geospatial location includes developing a fluid dynamics model based on measurements generated by a device deployed into fluid flows of the geospatial location. The measurements include temperature and velocity field, depth and particle transport measurements. The refining further includes refining and running the fluid dynamics model using measurements regenerated from the device being redeployed into the fluid flows to produce an output. This output is descriptive of fluid dynamics at the geospatial location and input into the ENM. The ENM is run to produce a baseline ENM output descriptive of a probability of a species existing at the geospatial location. In addition, the ENM is run with a limnologic modification to produce a predictive ENM output descriptive of a predictive probability of the species existing at the geospatial location that is comparable to the baseline ENM output.

Refining an ecological niche model (ENM) associated with a geospatial location includes developing a fluid dynamics model based on measurements generated by a device deployed into fluid flows of the geospatial location. The measurements include temperature and velocity field, depth and particle transport measurements. The refining further includes refining and running the fluid dynamics model using measurements regenerated from the device being redeployed into the fluid flows to produce an output. This output is descriptive of fluid dynamics at the geospatial location and input into the ENM. The ENM is run to produce a baseline ENM output descriptive of a probability of a species existing at the geospatial location. In addition, the ENM is run with a limnologic modification to produce a predictive ENM output descriptive of a predictive probability of the species existing at the geospatial location that is comparable to the baseline ENM output.

Automated detection of features and/or parameters within an ocean environment using image data. In an embodiment, captured image data is received from ocean-facing camera(s) that are positioned to capture a region of an ocean environment. Feature(s) are identified within the captured image data, and parameter(s) are measured based on the identified feature(s). Then, when a request for data is received from a user system, the requested data is generated based on the parameter(s) and sent to the user system.

Systems and methods for positioning objects in underwater environments are provided. The geolocation of a target for an object is determined, and a light source provided as part of a positioning system is operated to project a visible target at that location. The determination of the target location relative to the positioning system can include determining a location of the positioning system using information obtained from a laser system included in the positioning system. The light source used to project the visible target can be the same as a light source included in the laser system. A location of an object relative to the target location can be tracked by the laser system as the object is being moved towards the target location. The described methods and systems utilize one or more non-touch subsea optical systems, including but not limited to laser systems, for underwater infrastructure installation, measurements and monitoring.

Systems and methods for positioning objects in underwater environments are provided. The geolocation of a target for an object is determined, and a light source provided as part of a positioning system is operated to project a visible target at that location. The determination of the target location relative to the positioning system can include determining a location of the positioning system using information obtained from a laser system included in the positioning system. The light source used to project the visible target can be the same as a light source included in the laser system. A location of an object relative to the target location can be tracked by the laser system as the object is being moved towards the target location. The described methods and systems utilize one or more non-touch subsea optical systems, including but not limited to laser systems, for underwater infrastructure installation, measurements and monitoring.

A system for determining a measurement of a discharge of a streamflow in open channel conditions using a velocity-area technique featuring a signal processor configured to receive ADCP measurement signaling containing information about ADCP measurements taken in conjunction with the streamflow, GPS signaling containing information about GPS readings in conjunction with ADCP measurements, and signaling containing information about a projection or virtual tag line using two (2) Global Position System (GPS) locations having start and end latitudes and longitudes at a measurement site in a hydrographic operation for a measurement of a discharge in open channel conditions, and an instantaneous GPS position for a station; and determine control signaling containing information to take the ADCP measurements and the GPS readings in conjunction with the ADCP measurements, as well as corresponding signaling containing information about the measurement of the discharge of the streamflow, based upon a respective distance between each station in relation to the projection or virtual tag line, as well as ADCP signaling and the GPS signaling received, using Differential Global Position System (DGPS) or Real Time Kinematic GPS (RTK GPS).