35 results about "Ambient field" patented technology

The invention discloses a downscaling compensation technique for satellite precipitation data. Firstly, based on a mixed geographically weighted regression method, a mixed geographically weighted regression between low resolution satellite precipitation data and multiple high resolution variables is constructed. Secondly, based on the mixed geographically weighted regression and multiple high resolution variables, the downscaling precipitation data with high resolution is calculated. Thirdly, regarding the downscaling precipitation data with high resolution as an ambient field, a difference value distribution diagram with high resolution is acquired by calculating. Lastly, according to the difference value distribution diagram, the downscaling precipitation data with high resolution is calculated and the satellite downscaling precipitation compensation data is acquired. The downscaling compensation technique for satellite precipitation data is capable of obtaining high-precision satellite precipitation data with high resolution and being applied to the calculation of meteorological drought index and a driving hydrological model and providing high-precision input data for the hydrological model.

An improved magnetic torque transducer involves a method and apparatus for compensating effects of uniform and/or non-uniform magnetic sources by placing three sets of magnetic field sensors around a shaft with at least one magnetized zone. The set of primary magnetic field sensor or sensors is placed proximate to the magnetized zone, both the second and third sets of secondary magnetic field sensors being placed by pre-determined distances to the primary set of magnetic field sensor or sensors, so that primary field sensors always in a position with higher magnetic field strength arise from applied torque than that of secondary sensors. And a method is developed to use the second and third signals from secondary sensors to adjust the primary signal to compensating for the effects of the uniform and/or non-uniform ambient magnetic field sources.

The invention provides a numerical weather prediction method based on a mixed ambient field. According to the method, a mixed data ambient field of numerical weather prediction is generated based on the existing data of the relevant weather data and forecast data; initial parameters required in establishing a WRF mode are set to complete initial establishment of the WRF mode; effective meteorological data on feature level grid of the WRF mode is obtained; in the WRF mode, conclusion parameters of the numerical weather prediction is obtained by calculation according to the effective meteorological data; the conclusion parameters are extracted and processed to obtain conclusion data diagram of the numerical weather prediction. The present invention provides the mixed data using the reanalyzed data and the predicted background field as the background data for driving the meso-scale numerical weather prediction for numerical weather prediction; as the reanalyzed data itself assimilates a large number of observation data and the accuracy is high, which can significantly improve the accuracy of numerical weather prediction and save a lot of computing resources.

The invention belongs to the technical field of geophysical exploration and relates to an ocean controllable source electromagnetic response calculating method. The method is characterized in that a GPS/depth sensor mounted on a launcher is used to measure the position deviation of the launcher and a preset measuring line, substituting the position deviation data into a geological calculation model, allowing an electric dipole to be equivalent to a finite line source and performing subsection calculation, breaking up a sectioned long straight wire of optional morphology into horizontal and vertical equivalent electric dipoles under an observation coordinate system, respectively calculating the electromagnetic response of each section, using an analytic formula to solve an ambient field, using a staggered finite volume method to solve an induction field, and superimposing vector fields to obtain sectioned wires and the ocean controllable source electromagnetic response based on the actually-measured launcher morphology data. The method has the advantages that launcher morphology parameters can be monitored precisely, the method can approach the actual operation working conditions to the maximum extent, and the accuracy of electromagnetic response calculation and inversion can be increased effectively by using a finite line source treatment method.

The invention relates to a geomagnetic field disturbance real-time analysis forecasting system comprising a historical and real-time observation data device, a local geomagnetic field disturbance analyzing device and a geomagnetic field disturbance forecasting module, wherein the historical and real-time observation data device is used for monitoring the varying conditions of a geomagnetic field in real time; the local geomagnetic field disturbance analyzing device comprises a data preprocessing and storing device, a multiple regression analysis model device, a geomagnetic ambient field dynamic extracting device and a real-time geomagnetic field disturbance condition analyzing device; and the geomagnetic field disturbance forecasting module comprises a natural orthogonal decomposition feature vector model device, a feature vector set constructing device, a weighing single-step forecasting device, a geomagnetic field disturbance forecasting analyzing and storing device and a geomagnetic field disturbance forecasting output device, thereby providing the geomagnetic field disturbance real-time analysis forecasting system for forecasting the future geomagnetic field disturbance degree through observing data and analyzing the integral variation degree of the local geomagnetic field in real time by utilizing a single geomagnetic station.

The present invention relates to an ambient field level monitor device for a radio mobile terminal, comprising a reception unit for receiving a radio signal arriving at the radio mobile terminal to output a reception signal originating from the received radio signal and further to output an ambient field level signal, a synchronization decision section for receiving the reception signal from the reception unit to judge whether or not the reception unit is in synchronism with the received radio signal, and a time constant variable type ambient field level monitoring unit for receiving the ambient field level signal from the reception unit. If the synchronization decision section judges that the reception unit is out of synchronism with the received radio signal, the ambient field level monitoring unit increases its time constant so that the time constant exceeds its time constant to be taken for when the synchronization decision section judges that the reception unit is in synchronism with the received radio signal and if the synchronization decision section judges that the reception unit is synchronism with the radio signal, the ambient field level monitoring unit decreases the time constant. This reduces the measurement error caused by the difference between sampling timings, thereby enabling stable RSSI value detection irrespective of a phase synchronization condition of a mobile station to improve the detection accuracy.

Provided are an image restoration method and device. The method comprises: processing image blocks, which are initially registered, to acquire connection curves among the image blocks; constructing an ambient field of images to be restored by means of the connection curve; by minimizing energy of the connection curve in the ambient field, registering the image blocks; and performing image filling on the registered image blocks to acquire a restored image. The device comprises: a processing unit used for processing the image blocks, which are initially registered, to acquire the connection curve among the image blocks; an ambient field construction unit used for constructing the ambient field of the image to be restored by means of the connection curve; a registering unit used for registering the image blocks by minimizing the energy of the connection curve in the ambient field; and a filling unit used for performing image filling on the registered image blocks to acquire the restored image. The present invention can be applied to restore any damaged image and improve the accuracy.

There is provided a see-through display device capable of ensuring an ambient field-of-view which includes a display control board; a display device configured to emit image light according to an image signal generated in the display control board; a first prism that is located on a bottom surface of the display device, and a second emission surface perpendicular to the incident surface; a partial reflection filter configured to reflect some image light emitted from the first prism and penetrate the remaining image light; and a second prism that is located on a bottom surface of the partial reflection filter, has a length greater than the interocular distance, and in which an incident surface having the same angle as the emission surface of the first prism, a curved reflection surface in which image light incident on the incident surface is reflected with positive power.

The invention provides an orienting and positioning method of three-component gradient measurement of magnetic fields inside wells for magnetic ores outside wells, which includes orienting magnetic ores outside wells and positioning ores. An adopted direction method of horizontal magnetic field gradient anomaly has the advantages of being not disturbed by ambient fields due to the inaccurate inclinometer of nonmagnetic principles, capable of positioning the magnetic ores outside wells omnibearingly; and not only suitable for positioning magnetic ores in the north-south direction of the drilling, but also capable of positioning magnetic ores in the east-west direction of the drilling; and solving the problem that the horizontal magnetic anomaly is incorrect due to the drift azimuth and magnetic ores in the east-west direction of the drilling cannot be positioned.

The invention provides a brain blood oxygen level measuring method based on magnetic resonance. The measuring method includes acquiring an amplitude diagram and a phase diagram of brain tissues; standardizing the amplitude diagram into a noise SD diagram, and acquiring a standardized diagram Ic according to linear fitting of the noise SD diagram; unwrapping the phase diagram to acquire a standard field diagram; putting the standard field diagram and the standardized diagram Ic into a regularization constraint rule to acquire a magnetism sensitiveness matrix without an ambient field; acquiring a vein oxygen saturation value and an oxygen metabolism parameter according to the magnetism sensitiveness matrix. The brain blood oxygen level measuring method has the advantages that magnetic field phase changes generated by air tissues are removed, so that magnetism sensitiveness values of the tissues are regained better, and venous blood oxygen saturation Yv and residual saturation of hemoglobin in venous blood, namely an oxygen extraction fraction (OEF), are acquired.

The invention discloses an evapotranspiration data assimilation method based on a distributed time varying gain hydrological model. The method includes the following steps that first, data preparation is conducted, and daily evapotranspiration is obtained based on a remote sensing model and flux observation data to be used for 'observation'; second, an initial ambient field is generated and model simulation is driven; third, when 'observation' data occur, an observation field and a prediction field are obtained; fourth, an analysis field is acquired in an assimilation mode through an ensemble Kalman filtering algorithm; fifth, the ambient field is updated. According to the method, through the data assimilation technology, an evapotranspiration result with high precision is used as observation information, the hydrological model is adjusted to operate, error accumulation is reduced, and an evapotranspiration sequence with high precision and continuous time is simulated. Compared with the prior art, the evapotranspiration can be assimilated directly through the method, the model nondeterminacy can be lowered, operating is easy, a water cycle physical mechanism is realized, and the method can be widely applied to accurately estimating and continuously acquiring region evapotranspiration.

Systems and methods to wirelessly transmit power are provided. A coil assembly is provided. In some examples, the coil assembly is configured to generate a signal in response to an ambient field, and to magnetically couple with a device to deliver power to the device.