Abstract: Systems and methods for determining a time difference are provided in the present disclosure. The systems includes a first base station configured to receive a first signal transmitted from a terminal and receive a second signal from a second base station. The systems may also include the second base station configured to receive the first signal transmitted from the terminal, and transmit the second signal after receiving the first signal. The systems may further include at least one processor configured to determine a time duration between the first base station receiving the first signal and receiving the second signal and determine the time difference between a first time period of the first signal transmitted from the terminal to the first base station and a second time period of the first signal transmitted from the terminal to the second base station based on a third time period and the time duration.

Abstract: A launch monitor for golf training includes both a continuous wave radar transmitter and a frequency modulated continuous wave radar transmitter. A first set of golf ball trajectory parameters are estimated with the continuous wave radar transmitter and a second, different set of golf ball trajectory parameters are estimated with the frequency modulated continuous wave radar transmitter. The array of transmitters and receivers may be non-uniform.

Abstract: In a general aspect of the examples described, motion is detected based on bi-directional channel sounding. In an example, a first set of channel information is obtained from a first device. The first set of channel information is based on a first set of wireless signals transmitted from a second device through a space at a first time in a timeframe. A second set of channel information is obtained from the second device. The second set of channel information is based on a second set of wireless signals transmitted from the first device through the space at a second time in the timeframe. The first and second sets of channel information are analyzed to detect a category of motion or a location of detected motion in the space during the timeframe.

Abstract: An RF power detector adapted to detect an RF power of an RF signal, includes, in part, an antenna adapted to receive the RF signal, a narrow-band RF power converter adapted to convert the RF signal to a DC signal, an accelerometer, and a magnetometer. The accelerometer and magnetometer are adapted to determine the orientation and location of the power detector. The power detector optionally includes a gyroscope. The narrow-band RF power converter may be a rectifier tuned to the frequency of the RF signal. The power detector optionally includes an indicator adapted to provide information representative of the amount of the DC power of the DC signal, as well as position and orientation of the power detector. The power detector may be adapted to be inserted into a mobile device so as to provide the information about the amount of DC power, orientation and position to the mobile device.

Abstract: The present invention discloses a data collection method, an unmanned aerial vehicle (UAV) and a storage medium. The method is used for a vision chip of the UAV, the vision chip including a main operating system and a real-time operating system, and the method includes: generating, by the real-time operating system, a trigger signal; collecting, by the real-time operating system based on the trigger signal, flight control data of the UAV and controlling an image sensor to collect an image sequence; synchronizing, by the real-time operating system, a time of the main operating system with a time of the real-time operating system; and performing, by the main operating system, visual processing on the flight control data and the image sequence, to ensure that the flight control data and the image sequence are collected synchronously. By using the method, accuracy of data collected during controlling of the UAV can be improved.

Abstract: In an embodiment, a method for radar interference mitigation includes: transmitting a first plurality of radar signals having a first set of radar signal parameter values; receiving a first plurality of reflected radar signals; generating a radar image based on the first plurality of reflected radar signals; using a continuous reward function to generate a reward value based on the radar image; using a neural network to generate a second set of radar signal parameter values based on the reward value; and transmitting a second plurality of radar signals having the second set of radar signal parameter values.

Abstract: Systems, methods, and computer readable media that determine a location of a device using multi-source geolocation data, where the methods include accessing new location data from a location source of a plurality of location sources, where the new location data includes a new position and an accuracy of the new position, and determining a current position and an accuracy of the current position based on the new position, the accuracy of the new position, an previous current position, and an accuracy of the previous current position. The method further includes determining a change in location based on a difference between the current position and the previous current position. Some systems, methods, and computer readable media are directed to scheduling location requests to generate location data where the scheduling and the actual requests are made based on a number of conditions.

Abstract: Systems and methods are provided for detecting anomalous messages on a multipoint serial communications bus by extracting features from a first and a second message, including a time delay between the first and the second messages and, for each message, a sender address, a recipient address, a bus number, and a word count. A message transition pattern including the extracted features is generated. A probability of occurrence of the message transition pattern is determined by comparing the message transition pattern to a pattern dictionary, and the second message is determined to be anomalous when the probability is less than a predetermined threshold.

Abstract: Angle-resolving radar sensor for motor vehicles, including: an antenna array including multiple antennas, configured for receiving, situated in various positions in one direction in which the radar sensor is angle-resolving, and a control and evaluation unit configured for an operating mode in which at least one antenna of the radar sensor configured for transmitting transmits a signal received by multiple of the antennas of the radar sensor configured for receiving, and the angle of a radar target is estimated based on amplitude and/or phase relationships between signals of respective evaluation channels, which correspond to different configurations of transmitting and receiving antennas, an evaluation of the signals of the evaluation channels for a respective distance for a respective evaluation channel taking place for an individual estimation of an angle of a radar target, different distances being selected for respective evaluation channels as a function of an angle or angle range hypothesis.

Abstract: An improved bistatic radar detection system useful for detecting an imminent collision between a vehicle and a tracked object includes at least one radar module having both receiver circuitry and transmitter circuitry to allow a processor to dynamically select operations of the module as either a transmitter or a receiver of a bistatic radar set.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for multistatic radar communications. In one aspect, a wireless communication device may determine a distance and direction of one or more receiving devices. The wireless communication device may transmit, to the one or more receiving devices, timing information indicating a timing relationship between a codeword sequence and one or more pulses. The wireless communication device may transmit a respective codeword of the codeword sequence in the direction of each of the one or more receiving devices. The wireless communication device may further transmit the one or more pulses in a plurality of directions. The wireless communication device may receive feedback from at least one of the one or more receiving devices and determine ranging information about an object based on the feedback and the distance or direction of at least one receiving device.

Abstract: The embodiments described herein provide ranging and location determination capabilities in RF-opaque environments, such as a jungle, that preclude the use of Global Positioning System (GPS) and/or laser ranging systems, utilizing transponders and Global Positioning System (GPS) receivers located on aerial vehicles. The aerial vehicles operate above the RF-opaque environment, and communicate with a ranging device within the RF-opaque environment on frequencies that propagate in the RF-opaque environment. The ranging device transmits RF signals to the transponders, which are received by the transponders and re-broadcasted back to the ranging device on a different frequency. The aerial vehicles also provide their coordinates to the ranging device using their GPS receivers.

Abstract: The invention relates to a method for detecting parked vehicles and for collecting parking fees, wherein a transponder arranged in a vehicle repeatedly emits a detection signal which is received by at least three radio devices. On the basis of the detection signal, a position of the vehicle is calculated and an identifier of the transponder is determined, wherein it is detected whether the vehicle is in a parking space area and is parked. If the vehicle uses a parking space area for parking, an identifier of the transponder is transmitted to a registration server which determines a parking fee on the basis of a tariff for the parking space area which is used and, if necessary, initiates a payment process.

Abstract: A system and method for controlling vehicles and for providing assistance to operated vehicles is discussed and described herein.

Abstract: The present disclosure relates to predicting a destination of a user's current travel path. Real-time travel data associated with the current travel path is generated, wherein the real-time travel data comprises the user's current location. A plurality of potential destinations of the current travel path are determined based on historic travel data associated with one or more historic travel paths of the user. At least one destination of the current travel path is predicted from the plurality of potential destinations based on tracking a distance from the user's current location to each of the plurality of potential destinations.

Abstract: Directing functioning of an object based on its association to another object in an environment includes uniquely identifying, and obtaining properties of, each object of a plurality of physical objects in the environment, identifying an improper association between first and second physical objects of the plurality of physical objects in the environment, the improper association being identified based on physical proximity of the first object to the second object, and sending to a mobile device of a user an alert indicating the improper association and prompting the user to direct functioning of the first physical object.

Abstract: Provided is a device for pitch detection within user-defined zones. The device detects a first gesture at a first height based on first output from all or some sensors, and detects a second gesture at a second height based on second output from all or some sensors. The device sets a top and bottom of the user-defined zone based on the first height and the second height, and tracks a location of an object relative to the user-defined zone based on third output, from a subset of sensors, that is generated in response to the object moving over or under the subset of sensors. The device discards output generated from two or more sensors that are not adjacent, measurements from adjacent sensors that differ by more than a distance threshold, and/or output from adjacent sensors with timestamps that differ by more than a time threshold.

Abstract: A system and method for determining the presence of an individual at a particular spot within a location preferably based on the strength of signals received from beacons assigned to the particular spot by a software application (“App”) running on an electronic device of the individual. In one embodiment, certain presence calculations are performed by the App. In another embodiment, the App forwards information regarding the received beacon signals to an electronic identification and location tracking system and the presence calculations are performed by the system.

Abstract: A method includes transmitting one or more local transmit radar signals and receiving a plurality of local receive radar signals that corresponds to the one or more local transmit radar signals being reflected or refracted off an object. The method further includes processing the plurality of local receive radar signals to determine a relative position of the object. The method further includes determining whether the object is positioned within a desired detection volume associated with a position of the transmitter section. When the object is positioned within the desired detection volume, further processing the local receive radar signals to determine movement pattern of the object and whether the movement pattern of the object is within a range of plausible movements for the object. When the movement pattern of the object is within a range of plausible movements for the object, tracking movement of the object within the desired detection volume.

Abstract: The invention relates to a portable device with improved sensor position change detection. It aims at detecting a change of position of a mobile device relative to a user and, based on this change of position, a change of orientation of the mobile device relative to the user. This allows, when the orientation of the mobile device suddenly changes relative to a user, to keep track of this change. This is particularly useful for position tracking techniques such as Pedestrian Dead Recognition (PDR), which rely on an iterative determination of the orientation of a mobile device relative to the user, and may be affected by a sudden and important change of this relative orientation.

Abstract: Object of the present invention is a system for detecting the spatial position and tracking the movement of one or more objects provided with RFID Tags, said objects possibly being positionable on a suitable limited surface, which constitutes the test space. Such objective is achieved realizing a suitable sensorized test surface, on which elements provided with RFID identifier and magnetic marker can be positioned, possibly moved and monitored. Said surface houses a single RFID antenna dimensioned and positioned in such a way as to cover the entire area of interest, and able to read the tags of possible objects, coupled with a series of magnetic sensors, which are positioned in such a way as to ensure the coverage of the test area and whose measuring ranges may also be different according to the peculiarities of the areas of interest (overall area, precision of detection required, presence of particular areas of interest, etc.) and are partially overlapped.

Abstract: A media processing unit may identify, automatically based on game play data relating to game events of a sporting event and a set of source selection rules, different media portions from different media sources to include in the media coverage of a particular sporting event. Each of the different media sources may be configured to deliver different media related to the sporting event. The media processing unit determines a plurality of media mappings, which each associate a media portions with a game portions. Based on the determined media mappings, for each game portion, a media processing unit may select a media portion delivery to a user as media coverage of the game portion.

Abstract: Disclosed is a system and method for a hybrid radar system that integrates frequency-modulated continuous wave (FMCW) mode and interferometry mode. The radar works as a time division system that continuously switches between the FMCW mode and interferometry mode. The FMCW mode is responsible for absolute range detection and the interferometry mode takes cares of the weak physiological movement monitoring. The respective accuracies in range detection and displacement measurement complements the advantages of the two radar modes, providing versatile performance. By steering the antenna beam, the proposed radar system becomes an ideal solution for indoor health care, human localization, and human-computer interaction. Objects or human targets with or without stationary clutters can be precisely located. At the same time, the targets' vital signs and gestures can be monitored.

Abstract: A system for identifying a real-world geographic location of an emission source emitting electromagnetic energy includes a platform configured for movement and an apparatus disposed on the platform and configured to collect and process, in a passive manner and during movement of the platform, at least a pair of successive samples of the electromagnetic energy emission and define angular and spatial coordinates of the emission source. The apparatus includes at least a pair of antennas, a receiver coupled to antennas and a processor executing a predetermined logic.

Abstract: The present invention provides a position estimation apparatus, a position estimation system, and a position estimation method that can estimate, with high accuracy, the position of a wireless device, the position of which is unknown, as well as a recording medium for position estimation.

Abstract: The distance information producing apparatus includes a distance information producing unit producing, on a basis of a phase difference between paired image signals for phase difference detection obtained by image capturing of an image capturing area, distance information showing a distribution of object distances in the image capturing area, and a reliability information producing unit producing reliability information showing a reliability of the distance information, by using at least one of an evaluation value relating to an edge of at least one of the paired image signals, an evaluation value relating to a contrast of the at least one of the paired image signals and an evaluation value relating to a degree of correlation between the paired image signals.

Abstract: This document describes techniques using, and devices embodying, radar gesture sensing using existing data protocols. These techniques and devices enable transmitting data according to an existing data protocol, modulating the data on a radar field to transmit to another device, and sensing user gestures by analyzing reflections of portions of transmitted data by the transmitting or receiving device. Techniques are also described to filter received signals based on addressing information in the transmitted data to limit gesture recognition at a receiving device to transmitting devices known to the receiver.

Abstract: A control system for indoor position and vector tracking includes a plurality of radio frequency (RF) transmitters to detect a mobile radio frequency identification (RFID) tag. The control system includes an intelligent controller to receive location information from the RF transmitters and to calculate a vector associated with the mobile RFID tag. The intelligent controller may utilize the vector as a control input to an algorithm for selecting a control operation for one or more of plurality of networked devices.

Abstract: A radar device 1 equipped with a radar antenna 2. Specifically, this radar device 1 comprises a housing 3, a transmitting unit 6, and a receiving unit 7. The housing 3 has a first wall component 3R and a second wall component 3L that are opposite each other. The transmitting unit 6 is attached on the first wall component 3R side in an internal space of the housing 3, and is configured to transmit radar signal through the radar antenna 2. The receiving unit 7 is attached on the second wall component 3L side in the internal space of the housing, is disposed opposite the transmitting unit 6, and is configured to receive reflected wave of the radar signal through the radar antenna 2.

Abstract: Asynchronous information is provided by a sensor having a matrix of pixels disposed opposite the scene. The asynchronous information includes, for each pixel of the matrix, successive events originating from this pixel, that may depend on variations of light in the scene. A model representing the tracked shape of an object is updated after detecting events attributed to this object in the asynchronous information. Following detection, the updating of the model includes an association of a point of the model with the event detected by minimizing a criterion of distance with respect to the pixel of the matrix from which the detected event originates. The updated model is then determined as a function of the pixel of the matrix from which the detected event originates and attributed to the object and of the associated point in the model, independently of the associations performed before the detection of this event.

Abstract: A subsurface detection system may be capable of sensing a buried feature and providing an estimate of the feature's depth. Such a subsurface detection system may comprise a signal generator transmitting at least one signal toward a buried feature and at least one signal along a plurality of various length paths. Each of a plurality of correlators may be associated with one of the various length paths and receive both a signal reflected by the feature and a signal transmitted along one of the various length paths. Each of the correlators may correspond to a distance to the buried feature. As the reflected signal reaches each correlator it may identify a time offset between the arrival of the reflected signal and the signal transmitted along one of the various length paths. By so doing, a distance to the buried feature may be estimated by detecting the correlator with the shortest time offset.

Abstract: A remote geolocation system is provided including an inertial navigation unit (INU) having orthogonally disposed three axis accelerometers/gyroscopes in a strap down configuration in a case, a laser range finder (LRF) aligned with one INU axis, a GPS, and machine instructions that create a virtual INU (VINU) used to determine orientation of the case at an activation point (AP) when the LRF is pointed at a target, take sequences of global positioning satellites (GPS) location data and inertial measuring unit (IMU) orientation measurements from a starting location to the AP, draw a line between the starting location and the AP, identify a longitude line (LL) passing through the line, align one VINU axis with the LL, align another VINU axis with INU detected gravity, and align a remaining VINU axis with the LRF's output at the AP.

Abstract: A game console includes a receiver that receives motion data in response to motion of a gaming object. A trajectory generation module generates trajectory data based on the motion data and based on a motion prediction model. A processor executes a gaming application based on the trajectory data to generate display data.

Abstract: A method and system is described where a plurality of position reference devices use short-range wireless communication protocols to transmit positioning assistance data to nearby mobile devices, and the mobile devices use the assistance data to model errors and re-calibrate their positioning systems. The short-range communication methods include NFC, RFID, Bluetooth®, short-range 802.11, Wi-Fi Direct, and high frequency focused beams such as 60 GHz. The position reference devices are passive or active NFC tags, passive or active RFID tags, other devices that include such tags as their components, Bluetooth®-enabled devices, 60 GHz-enabled devices, and 802.11 access points that can lower their transmit power. The reference devices are located at various indoor and outdoor locations such as smart posters, kiosks, ATM machines, malls, store checkout counters, store security gates, wireless access points, cellular base-stations, tollbooths, traffic lights, and street lamp posts.

Abstract: Systems and methods to instruct a mobile device to switch from a first protocol to a second protocol after registering the device on a network associated with the first protocol. This may be done to obtain a cryptographic key used by the device. For example, for some communication protocols, such as 3G and 4G communication protocols, obtaining the cryptographic key is difficult. However, the 2G communication protocol uses a cryptographic key that is easier to obtain. Only after obtaining the key, the phone instructed to again switch to the first communication protocol. During the exchange of communication, the user is likely to be holding the phone at his ear, such that he is unlikely to notice that the phone is using the first communication protocol. Hence, the exchange of communication may be decrypted and monitored, without the user noticing anything amiss.

Abstract: Embodiments of the present invention provide a positioning processing method, apparatus, and system. The method includes: acquiring coexistence interference information of a terminal; instructing, according to the coexistence interference information, the terminal to perform measurement on a suitable positioning signal resource; and positioning the terminal based on a positioning measurement result reported by the terminal. According to the positioning processing method, apparatus, and system provided in the embodiments of the present invention, precision of terminal positioning can be improved.

Abstract: A pulse radar apparatus is disclosed. The pulse radar apparatus includes a pulse generation unit, a receiver unit, a synchronization unit, and a switch unit. The pulse generation unit generates a pulse based on a transmission trigger signal having a transmission pulse repetition period, and sends the pulse to a target via a transmission antenna. The synchronization unit generates the transmission trigger signal using an external reference clock, provides the transmission trigger signal to the pulse generation unit, and generates a plurality of clock signals having a time delay with respect to the transmission pulse trigger signal using the external reference clock. The switch unit selects any one clock signal from the plurality of clock signals in response to an external selection signal, and provides the selected clock signal to a receiver unit which utilizes a sampler with provided sampling clocks.

Abstract: A game console includes a receiver that receives motion data in response to motion of a gaming object. A trajectory generation module generates trajectory data based on the motion data and based on a motion prediction model. A processor executes a gaming application based on the trajectory data to generate display data.

Abstract: A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region.

Abstract: A method of determining a position of a vehicle on a guideway includes detecting a position of the vehicle relative to a first reflective positioning element along the guideway. The method also includes detecting a unique identification code of a transponder along the guideway, wherein the transponder is located a first known distance along the guideway from the first reflective positioning element. The method further includes determining the position of the vehicle, using a position determining system, based on a modulated reflection signal received from the transponder, a first non-modulated reflection signal received from the first reflective positioning element, and the first known distance.

Abstract: This disclosure describes a method, system and computer-program product for parallelized feature selection. The method, system and computer-program product may be used to access a first set of features, wherein the first set of features includes multiple features, wherein the features are characterized by a variance measure, and wherein accessing the first set of features includes using a computing system to access the features, determine components of a covariance matrix, the components of the covariance matrix indicating a covariance with respect to pairs of features in the first set, and select multiple features from the first set, wherein selecting is based on the determined components of the covariance matrix and an amount of the variance measure attributable to the selected multiple features, and wherein selecting the multiple features includes executing a greedy search performed using parallelized computation.

Abstract: Method for deploying an antenna involves selectively determining an optimal position for at least one defining point of an antenna based on one or more parameters associated with a wireless communication session. Responsive to this determining, an unmanned aerial vehicle is automatically controlled to suspend at least one portion of the antenna aloft in a controlled position based on the optimal position. The antenna is coupled to a wireless communication device which is disposed on the ground. The method involves using the antenna while aloft to conducting the wireless communication session while the wireless communication device is disposed on the ground.

Abstract: A system is disclosed having a primary vehicle and a secondary vehicle that is carried by the primary vehicle when not in use. The system further includes at least one of an immobilizing device to immobilize the primary vehicle if the secondary vehicle is removed from the primary vehicle, a data storage device for storing information regarding usage of the primary and secondary vehicles, a user interface device for displaying information regarding usage of the primary and secondary vehicles, and a user prompt for providing information regarding potential opportunities for use of the secondary vehicle to encourage usage of the secondary vehicle and lower CO2 emissions.

Abstract: A process measurement instrument includes a fiducial and is adapted for detection of the fiducial. The instrument includes an interface circuit comprising a drive circuit for transmitting a pulse signal at the fiducial and at a target of interest and a receive circuit receiving reflected echoes of the pulse signal and developing an analog receive signal representative of the reflected echoes. A processing circuit is operatively coupled to the interface circuit for receiving the analog receive signal and comprising a threshold detector detecting if the analog receive signal is above a select threshold value. A controller is operatively coupled to the processing circuit and responsive to leading and trailing edges of the reflected echo for the fiducial and determining an average of the leading and trailing edges to determine location of the fiducial.

Abstract: A method and apparatus are provided for locating an obstacle between a transmitter and a receiver. The method includes: determining at least one elliptical ring in which the obstacle is situated, the elliptical ring being defined by two confocal ellipses, having their focuses corresponding to the transmitter and to the receiver, each elliptical ring being associated with a physical echo generated by an obstacle; estimating a distance between the obstacle and a focus as a function of the separation between the confocal ellipses at the obstacle in a plane normal to the axis defined by the focuses so as to obtain a set of potential location zones for the obstacle in the elliptical ring; and lifting the ambiguity between the various potential location zones of the obstacle so as to deliver a location zone of the obstacle.

Abstract: Apparatus, the apparatus having at least one processor and at least one memory having computer-readable code stored thereon which when executed controls the at least one processor to perform a method comprising: obtaining in-phase and quadrature samples of a received radio signal at least first and second discrete instances in time; processing the samples to provide information relating to the amplitude and/or phase of the received radio signal at the first and second instances in time; using the amplitude and/or phase information of the received radio signal at the first and second instances in time to determine whether interference is present on the received radio signal; forwarding the complex signal parameters for processing if interference is determined not to be present; and discarding the complex signal parameters without forwarding them for processing if interference is determined to be present.

Abstract: In one aspect, a method to detect an object in an area includes forming a wireless network among a plurality of nodes, each of the nodes being configured to generate an electromagnetic field (EMF) in the area and determining changes in the EMF between two nodes based on: a first difference in received signal strength values between a previously determined received signal strength value and a currently determined received signal strength value, a second difference in received signal strength values between the currently determined received signal strength value and an average received signal strength value and a third difference in link quality values between a previously determined link quality value and a currently determined link quality value. The method further comprises detecting the object based on the changes in the EMF.

Abstract: Disclosed are an object locator system, a method and a program storage device. In the embodiments, radio frequency identification (RFID) tags are on objects within a defined area and each RFID tag can be activated by an RF activation signal. When a request (e.g., a verbal or keyed-in request) to locate a specific object is received from a specific user, the required permission to locate the object is verified and, optionally, the identity of the specific user is authenticated. Once the required permission is verified and the identity of the specific user is authenticated, one of three RFID readers transmits an RF activation signal. RF response signals received back at the three RFID readers from the specific object's RFID tag are used to triangulate the position of the specific object. Once determined, the position is communicated (e.g., by map display, verbal message, or text message) to the specific user.

Abstract: An intrusion detection and tracking system includes a plurality of nodes, a DP and a gateway. The nodes are disposed about an area and form a wireless network to be monitored, the nodes are configured to receive data and transmit data frames with a signal strength indicator and/or a link quality indicator in the frames. The DP is communicatively connected to the network and configured to analyze variations in the signal strength indicator and/or link quality indicator to detect and track disturbances to an electromagnetic field in the area. The gateway is configured to form a data link between the network and the DP.

Abstract: The invention relates to a method for estimating an object motion characteristic from a radar signal. The method comprises the step of receiving radar data of an object from a multiple beam radar system. Further, the method comprises the steps of associating radar data with estimated height and/or cross-range information of object parts causing the corresponding radar data and fitting an object model with radar data being associated with a selected estimated height and/or cross-range information interval. The method also comprises the step of determining an object motion characteristic from the fitted object model.