Abstract: The present invention relates to a method for indoor localization of a user equipped with a localization device having electromagnetic signal receiver means and means for detecting the orientation in a predetermined spatial reference system, wherein the indoor space is divided up into a plurality of rooms each of which includes a plurality of spatial volumes or areas, nodes, which are connected together in a directed-graph arrangement, and wherein a plurality of radio transmitters each designed to emit a respective localization signal are arranged inside this space. The method is based on the synergic use of three localization methods, i.e. fingerprinting, inertial navigation with intelligent step recognition and proximity localization.

Abstract: In an intelligent monitoring system, a wireless signal processing device transmits a wireless signal toward a first target object in a monitored area, receives a wireless status signal, and generates a monitoring signal corresponding to the first target object according to the wireless status signal. In addition, at least one signal-relaying device receives a back scattering signal, which is reflected from the first target object in response to the wireless signal, transfers the back scattering signal into the wireless status signal, and transmits the wireless status signal to the wireless signal processing device. The signal-relaying device includes a power supply device for supplying power for operations of the signal-relaying device, and the signal-relaying device is disposed in the monitored area between the first target object and the wireless signal processing device.

Abstract: A tracking system is described having at least two mobile transmitter/receivers (“transceivers”) which sense and respond to at least one tracking transceiver. The signals sent to and received from the mobile transceivers are analyzed to get a distance (range) that each is from the tracking transceiver. This can be converted into a position relative to the mobile transceivers. If there are enough transceivers, and at least one knows its absolute location, the absolute location of the mobile transceivers may be determined. Existing smartphones, cellphones, Wi-Fi routers, Bluetooth devices, and near-field devices that have on-board processors, can be modified to run executable code to implement the current invention. They may communicate using at least one of the modalities for tracking. These may be implemented in tracking the position and orientation of moving devices, such as a head-mounted display for virtual/Augmented Reality, automobiles, packages in a package delivery truck.

Abstract: Methods, systems, and computer program products for determining transit routes through crowd-sourcing, for determining an estimated time of arrival (ETA) of a vehicle of the transit route at a given location, and for providing predictive reminders to a user for catching a vehicle of the transit route. A server receives signal source information about wireless signal sources detected by user devices, including information about a first wireless signal source detected by some devices. The server determines that the first wireless signal source is moving. The server determines that the first wireless signal source is associated with a public transit route upon determining that the signal source information satisfies one or more selection criteria. The server stores information associating the first wireless signal source with the public transit route as transit movement data corresponding to the public transit route.

Abstract: A radar device employs a configuration provided with: a receiver which, in operation, receives one or more radar transmission signals transmitted from another radar device, in an interference measurement segment in which transmission of a radar transmission signal from the radar device is stopped; A/D conversion circuitry which, in operation, converts the one or more radar transmission signals from the other radar device received by the receiver from one or more analog signals into one or more digital signals; and an interference detection circuitry which, in operation, performs a correlation calculation between each of one or more discrete samples that is the one or more digital signals and a prescribed coefficient sequence to detect one or more prescribed frequency components included in the one or more digital signals, as one or more interference signal components.

Abstract: Methods and systems for correcting environmental distortion are disclosed. An example method can comprise receiving a first plurality of signals sampled in space at a first time and determining a first plurality of correction factors based on the first plurality of signals. The first plurality of correction factors can be configured to correct environmental distortion in the first plurality of signals. The first plurality of signals can be corrected by applying the first plurality of correction factors to the first plurality of signals thereby generating a corrected first plurality of signals. The corrected first plurality of signals can be provided. The method can be repeated for one or more additional pluralities of signals sampled in space at times subsequent to the first time with corresponding additional pluralities of correction factors. Each additional plurality of correction factors can be unique to a corresponding plurality of signals.

Abstract: An apparatus for detecting a dispersive object in non-dispersive clutter comprising a multi-frequency radar, a signal processor which computes the elapsed time between when each frequency is transmitted and that same frequency is received and the dispersion statistics related to the several frequencies. A dispersion analyzer produces a dispersive object discrimination value which is compared with a threshold by which a detection is declared. The apparatus also utilizes dispersion statistics to differentiate between dispersive and non-dispersive radar returns in order to reject the non-dispersive signals and pass the dispersive signals to a signal integrator which increases the signal-to-clutter ratio thereby improving the probability of detection of subsequent target detection processes.

Abstract: A system and method for a rangefinding instrument incorporating pulse and continuous wave signal generating and processing techniques for increased distance measurement accuracy. The use of the former technique effectively solves the ambiguity issues inherent in the latter while allowing for relatively simple circuit implementations. Thus, a potentially more accurate phase-based distance measurement technique can be utilized which is also completely independent of the maximum range to the target.

Abstract: Methods for characterizing scattering in a medium of a Light Detection And Ranging (LiDAR) system and systems therefrom are provided. A method includes obtaining off-axis power return characteristics with respect to a first wavelength of light and on-axis power return characteristics for at least the first wavelength of light. The method also includes estimating at least one beam attenuation coefficient (c) based on the off-axis power return characteristics and common volume parameter function for the LiDAR system and an extinction coefficient (?) for the medium based on the on-axis power return characteristics. The method further includes extracting a value for at least one diffuse attenuation coefficient (Kd) for the medium using a beam spread parameter for the LiDAR system (D) and a pre-defined relationship between ?, c, D, and Kd.

Abstract: In an embodiment, an acoustic transducer includes an element with an acoustic radiative surface having two warped edges at opposing sides. In another embodiment, an acoustic transducer includes first and second elements, each divided into at least two spatially separated portions electrically coupled to each other, the portions configured to interleave. In a further embodiment, an acoustic transducer includes first and second transducer elements. The second element is situated adjacent to the first element and includes a radiative surface with an edge having periodic elongations. In yet another embodiment, an acoustic transducer includes a transducer element with an acoustic radiative surface that has a skewed diamond shape.

Abstract: An object detection apparatus mounted to a vehicle includes a transmitter, a receiver, a filter, a threshold calculator, and an object determinator. The transmitter transmits a probe wave in pulse form. The receiver receives a reflected wave of the probe wave. The filter passes, among the received reflected wave, only frequencies that are at least smaller than a pulse frequency of the probe wave. Based on an output of the filter, the threshold calculator calculates an objection determination threshold for determining presence and absence of an object. The object determinator determines the presence and absence of the object by using the objection determination threshold calculated by the threshold calculator.

Abstract: A gaze recognition method includes: a signal sensing step of sensing sound wave signals output from one or more sound wave transmitters disposed on a head of a user; a signal analyzing step of analyzing the sensed sound wave signals; and a gaze recognizing step of sensing relative displacement of the sound wave transmitters through signal analysis results for the sound wave signals to recognize a gaze change of the user.

Abstract: An obstruction marking method includes generating a first echo curve using an electronic level gauge (ELG) coupled to a tank from a first reflected signal (echo signal) received when a material in the tank is at a first level. The ELG includes a radar-based obstruction detection algorithm stored in a memory coupled thereto. A processor implementing the obstruction detection algorithm identifies at least a first feature in the first echo curve to provide at least one suspected obstruction along with its position (first feature position). A second echo curve is generated from a second reflected signal when the material is at a second level. A third echo curve is generated from a third reflected signal when the material is at a third level. The suspected obstruction at the first feature position is stored in the memory as a verified obstruction with its first feature position.

Abstract: A capture region calculation unit calculates a capture point having the local highest reflection intensity in power profile information and calculates a capture region surrounding the capture point. An edge calculation unit calculates the edges of one or more objects from image data. A marker calculation unit calculates a marker from the capture region. A component region calculation unit calculates component regions by extending the marker using the edges. A grouping unit groups component regions belonging to the same object, of the component regions. The object identification unit identifies the types of one or more objects (e.g., large vehicle, small vehicle, bicycle, pedestrian, flight object, bird) on the basis of a target object region resulting from the grouping.

Abstract: Satellite geodesy can identify fault-related surface deformation above onshore oil and gas fields through the use of radar interferometry (InSAR). The method provides an independent and cost-effective approach to identifying faults and damage zones that can be associated with increased reservoir performance beyond traditional tools of subsurface imaging and reservoir evaluation.

Abstract: A driving lane detection device of the present disclosure includes: an object detector, a vehicle detector, and a driving lane detector. The object detector generates object data relating to a distance and direction from the vehicle to an object and a movement direction of the object based on one or more reflection waves that are a radar signal transmitted by a radar device and reflected by the one or more object. The vehicle detector detects each object as at least one of a parallel-running vehicle running in a same direction as the vehicle or an oncoming vehicle running in an opposite direction to the vehicle, based on the object data. The driving lane detector detects a driving lane based on the distance and direction from the vehicle to at least one of the detected parallel-running and the detected oncoming vehicles and lane information on at least one of lane widths and a number of lanes of a road on which the vehicle is running.

Abstract: A system and a method for determining a position and an orientation of an object relative to a defined reference frame is disclosed. A plurality of targets are disposed at known locations relative to the defined reference frame. A head assembly is disposed on the object, where the head assembly includes a plurality of cameras. The head assembly determines the position and the orientation of the object from location data associated with the plurality of targets and image data from the plurality of cameras.

Abstract: Interior trim apparatuses for motor vehicles are provided. In one example, an interior trim apparatus for a motor vehicle comprises one or more infrared (IR) light emitting diodes (LEDs). One or more IR sensors are cooperatively configured with the one or more IR LEDs to detect a presence of a nomadic device and/or a user input.

Abstract: The invention provides a posture detecting device, which comprises a tilt detecting unit as rotatably supported around two shafts perpendicular each other to an outer frame and for detecting a tilting from the horizontal, encoders provided on each of the shafts, motors provided so as to rotate each shaft, and a first arithmetic processing unit for driving/controlling the motor based on a detection result from the tilt detecting unit, wherein the first arithmetic processing unit drives the motors so that the tilt detecting unit detects the horizontal based on a signal from the tilt detecting unit when the outer frame is tilted and calculates a posture of the outer frame based on outputs of the encoders when the tilt detecting unit detects the horizontal.

Abstract: A method of installing a projected beam detector can include providing a radiant energy source, providing a reflector, and projecting a radiant energy beam from the source to the reflector. A multi-pixel sensor or camera can be provided. The beam can be reflected from the reflector back to the sensor. The distance between the reflector and the camera can be determined based on size of image of the reflector incident on the camera. Where incident intensity corresponds to expected intensity for a predetermined distance, the sensitivity can be set based on predetermined distance.

Abstract: A method, system and computer program product are provided for displaying three-dimensional measurement points on a two-dimensional plane of a display screen having a plurality of pixels. The method includes projecting the measurement points onto the plane. Each of the measurement points is assigned to one of the pixels. A depth value is assigned to each of the pixels. A first pixel is selected having a first measurement point and a first depth value. A first side is searched for a second pixel having a second measurement point and a second depth value. A second side is searched for a third pixel having a third measurement point and a third depth value. It is determined whether the second and third measurement points are on a same plane. The first depth value of the first pixel is changed when the second and third measurement points are on the same plane.

Abstract: In one embodiment, a method comprising, while traversing a field, monitoring for changes in satellite tracking; and providing a map of one or more obstructions based on satellite data recorded proximally to a detected change in the satellite tracking.

Abstract: Methods and apparatus are provided for power saving in GNSS receivers. In one novel aspect, the ME tracking period, the ME interval, and the PE working period, the PE interval are dynamically determined based on the GNSS signal conditions and/or the user requirements. In one embodiment, acceptable provision estimated position fix are used. Estimated position result is generated at each GPS position interval if there is no position result generated by the PE working period. In another embodiment, the ME-tracking and/or the PE-working are adjusted to minimum operation needs by using ME-partial (MEP) and/or PE-partial (PEP). PEP is arranged aligned with MEP. In yet another embodiment, the PE working period is delayed such that the PE working period is aligned with the ME tracking period. The position result is generated based on a last epoch's measurement obtained in the previous ME tracking period.

Abstract: A correlation processing method includes generating a correlation code in which a code value of a chip boundary period is set to a value of a replica code, and a code value of a chip center period other than the chip boundary period is set to a predetermined value, and performing a correlation calculation with respect to the correlation code and a received code signal obtained by demodulating a received signal from a positioning satellite.

Abstract: The invention relates to an apparatus and method for augmenting the 3 dimensional position information obtained from the NAVSTAR satellite-based global positioning system (“GPS”) system. Such systems can be impacted by physical obstacles that prevent the receipt of the satellite signals or as a result of sun spot activity that introduces noise into the signals thus causing them to become intermittently unavailable and/or making them less accurate in the course of normal operation. Therefore, an improved positioning solution that can operate under such poor GPS operational conditions is needed. The apparatus and method of the invention augments GPS with dead reckoning techniques when GPS signals are unavailable or inaccurate. The apparatus and method of the invention demonstrates highest value when applied to blasthole drill positioning applications in open-pit mines.

Abstract: A method includes detecting on an ongoing basis the currently existing dose rates while a worker is performing a maintenance or other operation within the RCA, and visually outputting information that pertains to the ionizing radiation to which the worker is being exposed during the operation. The information that is visually output can include information such as the current dose rate and the overall dose to which the worker has been subjected, but can additionally include information such as the time remaining before which the worker will have been exposed to the maximum allowable dose. Furthermore, it is possible for the visual display to output visual indicia that represent a comparison the exposure to ionizing radiation that had been planned as a function of time prior to the operation being commenced with the actual exposure to ionizing radiation as the operation is performed.

Abstract: A system and method for the measurement of radiation emitted from an in-vivo administered radioactive analyte. Gamma radiation sensors may be used to determine the proper or improper administration of a radioactive analyte in some cases, the system employs a sensor having a scintillation material to convert gamma radiation to visible light, which enables embodiments of the sensor to be ex vivo. A light detector converts the visible light to an electrical signal. This signal is amplified and is processed to measure the captured radiation. Temperature of the sensor may be recorded along with this radiation measurement for temperature compensation of ex vivo embodiments. The sensor enables collection of sufficient data to support separate application to predictive models, background comparisons, or change analysis.

Abstract: Among other things, one or more techniques and/or systems are described for resetting an integration circuit (206) of a detector cell or an electronics arrangement (200) thereof. When a voltage signal output by the integration circuit (206) exceeds a specified threshold (e.g., indicating that a specified number of radiation photons have been detected), a charge injection circuit (208) is configured to inject charge into the integration circuit (206). The injected charge is typically opposite in polarity to stored charge that is stored by a capacitor (214) of the integration circuit (206) and is configured to counteract the stored charge. In this way, a voltage potential at the capacitor (214) decreases, causing the voltage signal output by the integration circuit (206) to decrease.

Abstract: A scintillation crystal can include a sodium halide that is co-doped with thallium and another element. In an embodiment, the scintillation crystal can include NaX:Tl, Me, wherein X represents a halogen, and Me represents a Group 1 element, a Group 2 element, a rare earth element, or any combination thereof. In a particular embodiment, the scintillation crystal has a property including, for radiation in a range of 300 nm to 700 nm, an emission maximum at a wavelength no greater than 430 nm; or an energy resolution less than 6.4% when measured at 662 keV, 22° C., and an integration time of 1 microsecond. In another embodiment, the co-dopant can be Sr or Ca. The scintillation crystal can have lower energy resolution, better proportionality, a shorter pulse decay time, or any combination thereof as compared to the sodium halide that is doped with only thallium.

Abstract: A Compton camera includes a scattering detection unit, an absorption detection unit, a signal processing unit, a first shield unit, and a second shield unit. The scattering detection unit detects Compton scattering of incident radiation emitted from a radiation source. The absorption detection unit detects absorption of incident radiation that has undergone Compton scattering at the scattering detection unit. The signal processing unit obtains an image of the radiation source based on coincident detection events of Compton scattering of radiation at the scattering detection unit and absorption of radiation at the absorption detection unit. The first and second shield units are provided between the scattering detection unit and the absorption detection unit. The first shield unit selectively allows forward-scattered radiation to pass and selectively blocks back-scattered radiation.

Abstract: The resonant frequency of an example transducer can be adjusted by changing the effective mass of a backing mass using a tuning module. The tuning module includes a electrical source, a switch, and an electromagnetic coil connected in series as an electrical circuit. The electromagnetic coil is mechanically attached to the backing mass, and is disposed within a reservoir of a magneto-rheological fluid enclosed within a casing. When the switch is closed, the electrical source applies a voltage and current to the electromagnetic coil, and induces a localized magnetic field within the magneto-rheological fluid. In response to this localized magnetic field, the magneto-rheological fluid increases in viscosity, assumes properties comparable to a viscoelastic solid, and become affixed to the electromagnetic coil. As the electromagnetic coil is mechanically attached to the backing mass, the solidified magneto-rheological fluid increases the effective mass of the backing mass.

Abstract: Disclosed is a relocation detector mounted on an apparatus and configured to detect relocation of the apparatus and limit functions of the apparatus. The relocation detector includes a vibration power generation unit configured to convert a vibration to electrical energy. The relocation of the apparatus is detected by the electrical energy from the vibration power generation unit, which serves as a power source for the relocation detector, generated by the vibration of the apparatus.

Abstract: A multi-stage FWI workflow uses multiple-contaminated FWI models to predict surface-related multiples. A method embodying the present technological advancement, can include: using data with free surface multiples as input into FWI; generating a subsurface model by performing FWI with the free-surface boundary condition imposed on top of the subsurface model; using inverted model from FWI to predict multiples; removing predicted multiples from the measured data; using the multiple-free data as input into FWI with absorbing boundary conditions imposed on top of the subsurface model; and preparing a multiple free data set for use in conventional seismic data processing.

Abstract: Method for generating an effective, efficient, and stable absorbing boundary condition in finite-difference calculations, such as model-simulation of predicted seismic data. The top surface and optionally the bottom surface of the computational domain or grid are treated with one or more layers of PML (51), preferably 1D PML, assuming an orthorhombic medium in the PML implementation (52). The side surfaces are handled with one or more ABC layers (53). Further advantages may be realized by tapering earth model symmetry axis on the top and bottom of the model toward the vertical (54). The invention provides a beneficial compromise between reducing artifacts in the image or physical property model and computational efficiency and stability.

Abstract: The present disclosure includes a method comprising detecting arrival times of a P-wave and an S-wave at a plurality of receivers, the P-wave and the S-wave generated by a calibration event. The method also comprises fitting the P-wave arrival times as a first curve on a plot of distance versus time based on a first velocity model with a first type and fitting the S-wave arrival times as a second curve on the plot based on a second velocity model with a second type similar to the first type. The method additionally comprises determining a difference between a first origin time based on the first curve and a second origin time based on the second curve, and upon a determination that the difference between the first origin time and the second origin time is within a convergence criteria, selecting the first velocity model as a calibrated velocity model.

Abstract: Various implementations described herein are directed to a seismic survey using an augmented reality device. In one implementation, a method may include determining current location data of an augmented reality (AR) device in a physical environment. The method may also include receiving placement instructions for a first seismic survey equipment in the physical environment based on the current location data. The method may further include displaying the placement instructions in combination with a view of the physical environment on the AR device.

Abstract: Crosstalk attenuation for seismic imaging can include creation of a seismic image based on seismic data including multiples. The seismic image can include causal crosstalk and anti-causal crosstalk. Causal crosstalk and anti-causal crosstalk can be predicted based on the seismic data. The predicted causal crosstalk and the predicted anti-causal crosstalk can be attenuated from the seismic image.

Abstract: An acquisition effect of a marine survey measurement can be parameterized as a function of time to define a parameterized acquisition effect and a subsurface effect of the marine survey measurement can be parameterized as a function of position to define a parameterized subsurface effect. The acquisition effect and the subsurface effect can be estimated based on the parameterized acquisition effect and the parameterized subsurface effect to define an estimated acquisition effect and an estimated subsurface effect, respectively. The estimated acquisition effect can be removed from the marine survey measurement.

Abstract: The present disclosure provides a method for modeling and analyzing the impact of different seismic surveying and imaging techniques on a subterranean formation by creating a black hole boundary condition around a particular region in the formation where at least one of the physical characteristics is unclear and may distort the seismic modeling results. The black hole boundary conditions will eliminate any energy wave that enters, exit or reflect off the region so as to avoid any image distortion caused by this region.

Abstract: A method of subsurface exploration includes generating a representation of a portional volume of the Earth from a seismic measurement of a physical parameter.

Abstract: Embodiments relate generally to marine geophysical surveying and, more particularly, embodiments relate to methods for acquiring geophysical data by dynamically manipulating survey spread in response a change in location of a target. A method may comprise actuating an energy source in a body of water, wherein a target for a marine geophysical survey system is located beneath a bottom of the body of water. The method may further comprise detecting energy generated by the energy source. The method may further comprise manipulating a position of a survey spread in response to a change in distribution of the target beneath the bottom of the body of water.

Abstract: This disclosure provides systems, methods and apparatus for detecting a presence of an object. In one aspect an apparatus for detecting a presence of an object is provided. The apparatus includes a sense coil formed from a conductor having a predetermined shape configured to attenuate currents induced in the conductor by an external time-varying magnetic field. The sense coil has an electrical characteristic that varies as a function of the presence of the object. The apparatus comprises a detection circuit coupled to the sense coil and configured to detect the presence of the object in response to detecting a difference between a measured value of the electrical characteristic and a reference value for the electrical characteristic. The reference value for the electrical characteristic is substantially the same as the measured value of the electrical characteristic in the absence of the object over at least a portion of the sense coil.

Abstract: A first oscillation circuit in which a helical antenna is used as a part of an element for a resonance circuit and a second oscillation circuit in which a loop antenna is used as a part of an element for a resonance circuit are caused to oscillate at substantially the same frequency. When a human body approaches the helical antenna and the loop antenna, the frequency difference between the first oscillation circuit and the second oscillation circuit increases. This frequency difference is extracted using a BPF.

Abstract: An apparatus and method for simultaneously obtaining quantitative measurements of vertical and horizontal resistivity and permittivity formation parameters by firing, using at least one transmitter in each of a horizontally and vertically polarized array on opposite sides of a drill collar, signals in the direction of a downhole formation, the fired signals from the transmitters in the arrays being fired simultaneously and engaging the downhole formation. The apparatus and method continues by receiving, using at least one receiver in each of the arrays, signals associated with the fired signals after the fired signals have engaged the downhole formation, where the received signals represent apparent formation data. The apparatus and method further involves determining, using the measured apparent formation data, the true formation data including one or more vertical and horizontal formation parameters.

Abstract: A permanent monitoring tool is provided and disposed in a wellbore. Measurements are made at different times using the permanent monitoring tool on a region of a formation penetrated by the wellbore. One or more properties of the formation are inferred at one or more depths of investigation within the region using the measurements. Any changes in the one or more inferred formation properties are determined and one or more reservoir management decisions are made based on the determined changes. The well may be an observation well, an injector well, or a production well. The permanent monitoring tool may be a magnetic resonance tool or an electromagnetic tool. The measurements may be stacked to improve the signal-to-noise ratio of the signal. Different depths of investigation may be selected using antenna arrays of different lengths. The inferred properties may be saturation or resistivity. Conductive or non-conductive casing may be used.

Abstract: A method for jointly inverting subsurface resistivities and noise parameters that may comprise the steps of identifying electromagnetic data acquired from one or more electromagnetic sensors, wherein the electromagnetic data includes a source-generated signal and noise, and jointly inverting at least subsurface resistivities and noise parameters based on the electromagnetic data. A marine electromagnetic survey system, that may comprise a data processing system configured to identify electromagnetic data acquired from one or more electromagnetic sensors, wherein the electromagnetic data includes a source-generated signal and noise and jointly invert subsurface resistivities and noise based on the electromagnetic data.

Abstract: Neutron activation measurement techniques may be used to evaluate various properties of a subterranean well structure. In an example implementation, a logging tool can be positioned within a wellbore, such that neutrons generated by a neutron source are directed towards well structure. In response to the neutrons, the well structure emits gamma rays. A portion of the gamma rays can be detected by a gamma detector. To enhance the well structure's response to neutron activation, the well structure can be constructed of materials that include one or more doping materials. The inclusion of these doping materials can increase the number of gamma rays that are emitted when neutrons are directed into the well structure, and these emitted gamma rays can be more easily identified based on their energy level.

Abstract: A discrete and safe automated insect monitoring system includes a housing, an interior chamber within the housing, and a light source arranged within the housing to illuminate at least a portion of a floor surface of the interior chamber. A multi-pixel optical sensor is arranged within the housing so that a field of view of the sensor comprehends a substantial portion of the floor surface. A processing circuit arranged within the housing receives optical data from the multi-pixel optical sensor, analyzes the optical data to detect the intrusion of an insect or other object into the interior chamber by comparing most recently received optical data to previously received optical data, and generates an indication in response to detecting the intrusion of an insect or other object. Detection and/or classification results can be wirelessly forwarded to another device, to alert appropriate personnel.

Abstract: Methods, apparatuses, and computer program products are described herein that are configured for determining the presence of media. More particularly, various embodiments of the present invention enable programmatic media detection utilizing a dual sensor media detection system. One example embodiment may include a media detection apparatus comprising a first sensor comprised of a first emitter and a first detector, the first sensor disposed on a first side of a media path, a second sensor comprised of a second emitter and a second detector, the second sensor disposed on a second side of the media path, wherein the second detector of the second sensor is positioned to receive electromagnetic energy transmitted by the first emitter of the first sensor when media is absent from the media path.

Abstract: A method for estimation of water properties and hydrocarbon properties in a subsurface formation include acquiring a plurality of well log measurements from the subsurface formation. The water properties and the formation properties are parameterized with respect to a selected set of well log measurements. The parameterized water properties, the parameterized formation properties and the well log measurements are graphically displayed to estimate the water properties.