34 results about "SeaWiFS" patented technology

Methods and systems for determining position of marine seismic spread components are disclosed. One method comprises exposing an underwater marine seismic spread component to an optical device, and calculating geometry of the spread component using at least some of the data obtained by the optical device, for example travel time for an optical signal to travel to and return from one or more spread elements in the spread component. The optical device may comprise one or more laser scanners, cameras, or laser scanners and cameras. The spread component may be a marine seismic source, a marine seismic streamer cable, and the like. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.

A system and method for acoustic noise reduction / cancellation is disclosed that includes a medical imaging scanner configured to scan an imaging subject within an imaging area that emits system noise when in operation. An ultrasonic emitter system is included that is constructed to emit an inaudible signal having properties to reduce perception of the system noise about at least a portion of the imaging area.

A new processing capability for dust enhancement over land or water using image data from the Sea-viewing Wide Field of View Sensor (SeaWiFS) has been developed for Naval meteorology / oceanography (MetOc) operations support. The data are captured via direct broadcast high-resolution picture transmission (HRPT) at Navy Regional Centers in Rota, Bahrain, and Yokosuka, and processed at the Naval Research Laboratory in Monterey. The raw data are calibrated, corrected for missing lines and clutter, corrected for molecular scatter contamination, and enhanced through multispectral combination to yield value added products. The processing has been automated completely such that products, generated upon receipt of data, are hosted upon a password protected website typically 60 to 90 minutes from time of initial capture. This invention summarizes the SeaWiFS instrument capabilities, the protocol followed for automated near real-time processing, a physical basis for the NRL enhancements, and specific examples of the products with extension to over-land dust enhancement as enabled by MODIS. It closes with a glimpse of the potential utility of these products from the perspective of the warfighter.

The present invention relates to a method for treating a goaf by ultra-deep hole blasting in an open-pit mine, comprising the following steps: detecting the goaf: drilling a hole in the goaf, and combining a three-dimensional laser scanner or an underwater sonar scanner to detect the goaf Collect relevant information on the scope of the goaf, roof thickness and height of the goaf, and establish a three-dimensional address model; perforate the goaf, and use geological drilling rigs on the top and surrounding parts of the goaf according to the shape of the goaf obtained from the detection data of the goaf Drill the main blasting hole, cutting hole and auxiliary hole, and install a slag bucket at the hole to ensure the porosity; charging, backfilling and blasting. Adopting the method for treating the goaf by ultra-deep hole blasting in the open-pit mine of the present invention, on the one hand, the goaf can be collapsed and processed at one time, avoiding the potential safety hazard of secondary compensation when the gob is mined due to layered treatment, and on the other hand, it can solve the problem of The safety and technical problems that plague the mining of open-pit mines under complex empty conditions provide a guarantee for improving mine production capacity.

Known georeferencing techniques require input in the form of manually-chosen anchor points or dense surveyed data. The present invention is an improved method and system for georeferencing underground geometric data. The method comprises (a) visiting at least two control points; (b) obtaining information about each of the at least two control points using scanning means; (c) recording the information about the at least two control points into a computer processor; and (d) performing a best-fit transformation to the recorded information. Preferably, the scanning means comprises laser scanners and at least two radio-frequency identification (RFID) tags. However, other technologies, such as retro-reflective LIDAR targets, Wi-Fi access points or bar codes and a bar code reader may also be used. In addition, sonar, radar, flash LIDAR, MEMS LIDAR, or any other similar technology could be used.

The invention discloses a precision calibration method for a ship-borne integrated measurement system carried out in a water pool, which belongs to the technical field of marine surveying and mapping. Carried out on the basis, the present invention can be used as the accurate spatial point cloud data of the target object according to the laser scanner measurement data after precise inspection, and based on this, by comparing the multi-beam measurement data with the laser scanner measurement data, the obtained by rough calibration The offset and rotation angle of the coordinate system of the multi-beam echo sounder relative to the coordinate system of the inertial navigation system are used as initial values, and the precise correction of the offset and rotation angle of the coordinate system of the multi-beam echo sounder relative to the coordinate system of the inertial navigation system is obtained value to achieve overall calibration of the measurement system. The invention integrates a laser scanner and a multi-beam depth sounder, can simultaneously acquire seabed topography and near-shore water topography data, and realizes precise overall calibration of a ship-borne multi-sensor measurement system in a pool.

The invention provides a deflection-angle measuring method and system for installing a laser scanner on a port shore bridge and aims at changing the situation that the existing operation process for detecting and adjusting the installation angle of the laser scanner is tedious and wastes time and labor. The detection system is characterized in that after the scanner is primarily installed and theinstallation angle is adjusted properly, a sea-side crossbeam and a land-side crossbeam of the shore bridge are respectively provided with a reference object; when the scanner is disassembled and needs to be reinstalled, secondary installation and angle adjustment of the scanner can be finished in a very-simple and assisting manner, installers adjust the installation angle of the scanner, assistants observe whether the reference objects preinstalled on the sea-side crossbeam and the land-side crossbeam of the shore bridge can be scanned simultaneously on a graphic interference, and if the twopreinstalled reference objects can be scanned simultaneously, the work for adjusting the installation angle of the scanner is ended.

The invention discloses a multi-source scanning type bored pile enlarging head contour scanning device, comprising a depth encoder and an in-hole probe. The upper shell and the lower shell of the in-hole probe are connected by a calibration communication rod, and the upper shell The bottom of the body is sequentially installed with a conical reflection type fixed support, a laser scanner, a sonar scanner and a conical reflector, a liquid sensor is installed above the lower shell, and an electronic compass and a camera are installed above the liquid sensor in sequence. , the upper shell is connected with the industrial computer through the transmission tension cable and the depth encoder in turn. The invention also discloses a multi-source scanning method for contour scanning of the enlarged head of the bored pile. The invention solves the problem of high-precision measurement of the enlarged head of the bored pile, and simultaneously realizes the three-dimensional measurement of the enlarged head of the bored pile. Intuitive visualization. The method and the device are novel in conception and easy to implement, and are a new method and a new generation device of the enlarged head measurement technology of bored piles, and have broad application prospects.