61 results about "Navigational system" patented technology

The navigational system comprises a plurality of mobile and stationary telemetry-devices, recording spatial data-artifacts, transmitting forecasted positional phase-changes, density point clustering schema that Maptrac's each transport imechanixm; providing calculated digital navigation directives transmitted to a plurality of devices equipped with pAvics, Obvipro and / or other certified compliant telemetry-devices, attached to and or carried by humans, motorcycles, bicycles, skis, snow boards and or a plurality of transport imechanixms; telematic-data of each transmits collected data-relics through a subnaysys network-topology provided by telemetry mobility, viewable and / or audibly heard on iNavX2 virtual interface and or iNavCom centers and / or a facilities interface.

The satellite navigational system integrated with the tilt measurement system capable of precise measurement of the actual coordinates of the mobile unit that moves along a track with variable tilt is disclosed. Using the integrated satellite / tilt measurement system, a plurality of 3 dimensional lines separated by optimal swathing offset vector can be formed and followed in order to provide field guidance during a precision farming operation across variably inclined terrain.

A system and method for detecting global positioning system (GPS) spoofing attacks includes collecting GPS readings along with inertial navigational system (INS) readings as a ground truth, and sequentially testing the GPS readings and INS readings through the use of a sequential probability ratio testing (SPRT) process.

A method and system for processing radar data obtained from a platform which is subjected to non-uniform movement, the distance the platform travels during the formation of an image comprising an aperture; the system comprising software programming for performing a subroutine for building up an average pulse representing a single point on the aperture; the subroutine comprising the steps of inputting radar data from a radar antenna; passing the radar signal through low noise amplifier to reduce impact of electronic noise from the radar system; down converting the signal with a mixer to obtain a lower frequency; filtering out harmonics from the higher frequency range; sampling the radar data using an analog to digital converter at least at Nyquist down range frequency; based upon the IF of the radar; determining a scene center (center of SAR imagery) for the purpose of motion compensation; performing a two stage averaging scheme of the received signals with a variable window function; determining a window function based upon the velocity and acceleration of the platform and scene center; the window function comprising a first stage window; coherently averaging N pulses together to create an average pulse; performing an inverse Fourier transform; compensating to the scene center by multiplying by a complex exponential based upon both the GPS and inertial navigational system; summing the average pulses using low pass filter; the software programming operating to repeat the step of building up an average pulse a first predetermined number of times for a time period that is less than the Nyquist sample time interval; the software programming operating to repeat the step of building an average pulse for a predetermined number of times to generate a second predetermined number of average pulses; the software programming operating to perform a two dimensional inverse Fourier transform to obtain SAR image; outputting the SAR image on a display screen; and a display for displaying the outputted SAR image.

A system providing three-dimensional visual navigation for a mobile unit includes a location calculation unit for calculating an instantaneous position of the mobile unit, a viewpoint control unit for determining a viewing frustum from the instantaneous position, a scenegraph manager in communication with at least one geo-database to obtain geographic object data associated with the viewing frustum and generating a scenegraph organizing the geographic object data, and a scenegraph renderer which graphically renders the scenegraph in real time. To enhance depiction, a method for blending images of different resolutions in the scenegraph reduces abrupt changes as the mobile unit moves relative to the depicted geographic objects. Data structures for storage and run-time access of information regarding the geographic object data permit on-demand loading of the data based on the viewing frustum and allow the navigational system to dynamically load, on-demand, only those objects that are visible to the user.

Systems and methods for providing a reference for an acetabular cup plane in accordance with embodiments of the invention can include a method performed by a computer-aided surgical navigational system with a display screen and at least one sensor. The method can include detecting at least one array associated with a platform upon which the patient is supported in a supine position. The method can also include defining a surgical reference plane for a surgical procedure associated with an acetabular component, based at least in part on detecting the array associated with the upper surface of the platform. Furthermore, the method can include outputting via the screen at least one user interface for use with the surgical procedure associated with an acetabular component, based at least in part on detecting the array associated with the upper surface of the platform.

A Waypoint Services Navigational System (WSNS) is disclosed comprising a mobile unit connected to a server and to a database by the Internet. The WSNS uses omnipresent digital cellular links or any other form of radio frequency communications for transmission of information by a registered services provider to a traveler with a WSNS mobile unit. Using WSNS, the registered service provider announces its presence along with specific services / products to a traveler with a WSNS mobile unit within a predefined geographic radius. This information may be viewed via a conventional mobile computer, a personal digital assistant screen, or through a Global Positioning System (GPS) mapping longitude / latitude device. The WSNS mobile unit may be portable or mounted in a vehicle in a convenient location. Specific directions to a selected services provider are provided based upon the proximity positioning information at that moment in-time when the information is requested. Advertising specials, competitive services / products, entertainment, or emergency services may all be broadcast, and the user may choose from menus for the nature of services desired. Information may be provided regarding “upcoming” service providers through a combination of user geographical location, user directional data, and overlay maps showing registered businesses. Products or services may be ordered through a WSNS online order system for placing credit-or account backed purchases using the WSNS combination of locational information and business registration. WSNS service may also be provided through conventional internet-only communications, downloadable into a GPS-attached mobile computer to alleviate the need for a cellular link to the car.

Program products, methods, and systems for providing location-aware fitness monitoring services are disclosed. In an embodiment of the present invention, a method of displaying a route traversed by an athlete equipped with a location-aware portable fitness monitoring device includes the steps of (a) receiving data describing a plurality of satellite navigational system waypoints that are acquiredas the athlete engages in a fitness activity, (b) identifying a map area based on a location indicated by the data describing the plurality of satellite navigational system waypoints, (c) determiningthe route traversed by the athlete based on the data describing the plurality of satellite navigational system waypoints and based on the location of one or more known paths associated with the map area, and (d) displaying the route traversed by the athlete on top of the map area.

A robotic cart pulling vehicle includes a positioning error reducing system for reducing accumulated error in the ded-reckoning navigational system. The positioning error reducing system including at least one of a low load transfer point of the cart attaching mechanism, a floor variation compliance structure whereby the drive wheels maintain a substantially even distribution of load over minor surface variations, a minimal wheel contact surface structure, a calibration structure using at least one proximity sensor mounted on the robot body, and a common electrical and mechanical connection between the cart and the robot vehicle formed by a cart attaching post.

This embodiment of the invention relates to a navigational system having at least navigational software capable of determining and or displaying maps, directions, and or for providing other location specific information. The navigational system is capable of accepting location identifier data. Such location identifier data can include a phone number, caller ID, an email address, an instant message address, and or other types and or kinds of location identifier data. In response, the navigational system performs a reverse lookup query using the location identifier data to determine the location street address, and or other location specific information. This location street address, and or other location specific information are then used to provide maps, directions, and other location information to a user by way of the navigational system. The navigational system can obtain information from local data processing resources, and or optionally from remote global network based data processing resources.

A method and system for processing radar data obtained from a platform which is subjected to non-uniform movement, the distance the platform travels during the formation of an image comprising an aperture; the system comprising software programming for performing a subroutine for building up an average pulse representing a single point on the aperture; the subroutine comprising the steps of inputting radar data from a radar antenna; passing the radar signal through low noise amplifier to reduce impact of electronic noise from the radar system; down converting the signal with a mixer to obtain a lower frequency; filtering out harmonics from the higher frequency range; sampling the radar data using an analog to digital converter at least at Nyquist down range frequency; based upon the IF of the radar; determining a scene center (center of SAR imagery) for the purpose of motion compensation; performing a two stage averaging scheme of the received signals with a variable window function; determining a window function based upon the velocity and acceleration of the platform and scene center; the window function comprising a first stage window; coherently averaging N pulses together to create an average pulse; performing an inverse Fourier transform; compensating to the scene center by multiplying by a complex exponential based upon both the GPS and inertial navigational system; summing the average pulses using low pass filter; the software programming operating to repeat the step of building up an average pulse a first predetermined number of times for a time period that is less than the Nyquist sample time interval; the software programming operating to repeat the step of building an average pulse for a predetermined number of times to generate a second predetermined number of average pulses; the software programming operating to perform a two dimensional inverse Fourier transform to obtain SAR image; outputting the SAR image on a display screen; and a display for displaying the outputted SAR image.

The present invention provides an aircraft navigational system including a graphical user interface that is capable of displaying navigational information in a split-screen format. The split-screen format includes displaying multiple graphical user panels, each depicting different traffic information. For example, one of the panels displays a plurality of air traffic symbols corresponding to airborne obstacles and another of the panels simultaneously displays ground traffic symbols representing ground obstacles. The obstacles can include other aircraft in the air and on runways as the pilot's aircraft approaches for a landing. The navigational system also is capable of switching between a single graphical user panel and multiple panels in response to a triggering event, such as a change in the course of the aircraft.

The present invention provides an aircraft navigational system including a graphical user interface that is capable of displaying navigational information in a split-screen format. The split-screen format includes displaying multiple graphical user panels, each depicting different traffic information. For example, one of the panels displays a plurality of air traffic symbols corresponding to airborne obstacles and another of the panels simultaneously displays ground traffic symbols representing ground obstacles. The obstacles can include other aircraft in the air and on runways as the pilot's aircraft approaches for a landing. The navigational system also is capable of switching between a single graphical user panel and multiple panels in response to a triggering event, such as a change in the course of the aircraft.

The preferred embodiments of the present invention are directed to an improved mapping and navigational system. Specifically, the present invention is directed to a system for defining and assigning geographical boundaries to points of interests on a graphical map, where the geographical boundaries preferably correlate to spatially defined boundaries of the respective points of interests. In accordance with one embodiment of the present invention, the points of interest, along with the respective defined geographical boundaries, can be transferred from a personal computing device to a telecommunication device, such as a portable communication device, so as to be used for mapping purposes and to set off proximity alerts when the portable communication device, equipped with a GPS unit, enters or exits the geographical boundary of a particular point of interest.

The present invention provides a new baseband integrated circuit (IC) architecture for direct sequence spread spectrum (DSSS) communication receivers. The baseband IC has a single set of baseband correlators serving all channels in succession. No complex parallel channel hardware is required. A single on-chip code Numerically Controlled Oscillator (NCO) drives a pseudorandom number (PN) sequence generator, generates all code sampling frequencies, and is capable of self-correct through feedback from an off-chip processor. A carrier NCO generates corrected local frequencies. These on-chip NCOs generate all the necessary clocks. This architecture advantageously reduces the total hardware necessary for the receiver and the baseband IC thus can be realized with a minimal number of gate count. The invention can accommodate any number of channels in a navigational system such as the Global Positioning System (GPS), GLONASS, WAAS, LAAS, etc. The number of channels can be increased by increasing the circuit clock speed.

An electronic navigational system may automatically develop nautical routes, may retrieve previously-developed nautical routes, or may combine previously developed route(s) or route segment(s) with an automatically developed route or route segment(s).

The invention relates to the space orientation and the communication domain, which based on guidance correspondence integration system of the time position and status messages. The system use central station with the heavy-caliber antenna as relaying, can support the information feedback service about the guidance terminal, and can also support the broadcast service about the tie-station. Even in the region communication network can not cover in the ground, using the own satellite resources of repeater type satellite navigational system, can complete guidance and correspondence function, can orient any user's position in any place of the world precisely, which is effective supplement of the the repeater type satellite navigational system, especially suit for oceangoing voyage, and battle, research, exploration in the unpopulated area.

The invention discloses a system for measuring the clinic parameter of the knee used during the knee replacement operation and a method thereof. The system (30) foe measuring the biomechanics parameters of the knee joint before the whole knee joint replacement (TKR) operation and a method (40, 70) include a plurality of micro transducers (12, 14, 16, 32) for removably attached on the thighbone (18), the shin (20) and the patella (22); at least a sensor (34) for communicating with a plurality of micro transducers (32); a navigational system (36) coupled to at least a sensor (34); an imaging system (38) coupled to the navigational system (36) for executing the imaging of the knee joint; at least a display (35) for displaying the image and tracking the data.

An aviation navigational system and method for predicting glide range for an aircraft for specific airports and other potential emergency landing locations in proximity to the aircraft. Information is presented to the pilot by complementing a conventional moving map display with symbols centered on each landing location. GPS altitude, airport elevation, and the aircraft's glide ratio are factored into an equation to determine glide range for each airport within proximity to the aircraft. A circular symbol representing the glide range boundary is displayed around each airport. Each circular symbol represents a sectional view of an imaginary inverted cone, having the apex thereof centered on a given landing location. The size and shape of the cone is based on the gliding performance of the aircraft and the altitude differential between the aircraft and the target landing location. As the altitude differential increases the radius of the circle increases. Conversely as the altitude differential decreases, the radius of the circle decreases. As long as the aircraft is anywhere within any one of the three-dimensional inverted cones displayed, as represented by one or more circles on a two dimensional display, it can safely glide to the landing location. This display concept is selectively referred to herein as “cones of safety.”

A map-based search application for map-based category navigation includes geographic data, category data, and categorized data comprising at least one item, wherein each item is associated with each of the geographic data and the category data. Accordingly, a user is enabled to search for categorized data that satisfies at least one condition related to the geographic data and at least one condition related to the category data. The invention further comprises a display for displaying a list of results from a search, wherein the list comprises the at least one item.

An aviation navigational system and method for predicting glide range for an aircraft for specific airports and other potential emergency landing locations in proximity to the aircraft. Information is presented to the pilot by complementing a conventional moving map display with symbols centered on each landing location. GPS altitude, airport elevation, and the aircraft's glide ratio are factored into an equation to determine glide range for each airport within proximity to the aircraft. A circular symbol representing the glide range boundary is displayed around each airport. Each circular symbol represents a sectional view of an imaginary inverted cone, having the apex thereof centered on a given landing location. The size and shape of the cone is based on the gliding performance of the aircraft and the altitude differential between the aircraft and the target landing location. As the altitude differential increases the radius of the circle increases. Conversely as the altitude differential decreases, the radius of the circle decreases. As long as the aircraft is anywhere within any one of the three-dimensional inverted cones displayed, as represented by one or more circles on a two dimensional display, it can safely glide to the landing location. This display concept is selectively referred to herein as “cones of safety.”

The present invention relates to indication systems providing augmented visual support for the operator of a motor vehicle, vessel or an aircraft. The indication system is positioned in the location of a traditional vehicular gauge dashboard. The indication system consists of an image formulator and an optical collimator system with two visual channels. Lower channel is used for direct visual tracking of all virtual gauge readings while the upper channel is used to track updates “on the windshield” of a vehicle with the background of the surrounding environment. The lower channel displays virtual collimator imaging of the traditional analog or digital gauges as well as navigational system data. The upper channel is reflected onto the exterior background of the windshield and displays collimator imaged critical data that is required for the safe operation of a vehicle. To provide the switching functionality between the two channels, the indication system utilizes a lightproof partition. The side of the partition facing the image formulator is designed as a flat reflective mirror. In order to engage the lower channel, the partition is placed away from the optical systems for the lower channel. To provide viewing of the upper channel, the partition is positioned along the optical axis of the upper collimator lens at a given angle. To provide the function of automatic switching between the channels, the multifunctional collimator indicator is equipped with an eye position tracking system which tracks real-time position of the eye's pupil.

A slow rolling projectile comprises a projectile body has a forward section and a rear section and having a longitudinal axis. Two or more canards in the forward section are capable of being extended from and retracted into the projectile body at predetermined frequencies and / or for predetermined times. Two or more tail fins in the rear section are fixed coextensive to or at an angle to the longitudinal axis, and an actuator extends and retracts the canards. The canards are capable of being extended and retracted at a rate based on the rotation of the projectile sufficient to correct for lateral movement. A GPS or INS navigational system activates an actuator to extend and retract the canards.

The invention discloses a zero base line self-closed-loop satellite and ground time synchronizing method in a pseudo global positioning system. The method comprises the following steps: firstly, a pseudo satellite navigational signal is generated by a pseudo satellite signal generator with trigger pulse serving as time reference and is sent to a closed-loop navigational receiver under the condition of a zero base line; secondly, the closed-loop navigational receiver simultaneously receives a pseudo satellite signal and a space satellite navigational signal and satellite and ground synchronizing clock correction is calculated according to a pseudo satellite distance measurement value and a navigational satellite distance measurement value which are output by the receiver; thirdly, the satellite and ground synchronizing clock correction is processed, a rough clock correction control word and a precise clock correction parameter are obtained, the rough clock correction control word is sent to the signal generator, and satellite and ground rough synchronization is achieved; and fourthly, the precise clock correction parameter is written in a pseudo satellite telegraph text so that satellite and ground precise synchronization is achieved. The zero base line self-closed-loop satellite and ground time synchronizing method in the pseudo global positioning system can achieve high accuracy time synchronization of the pseudo global positioning system and a space satellite navigational system and has the advantages of being low in cost, simple and practical.

The present invention provides a new baseband integrated circuit (IC) architecture for direct sequence spread spectrum (DSSS) communication receivers. The baseband IC has a single set of baseband correlators serving all channels in succession. No complex parallel channel hardware is required. A single on-chip code Numerically Controlled Oscillator (NCO) drives a pseudorandom number (PN) sequence generator, generates all code sampling frequencies, and is capable of self-correct through feedback from an off-chip processor. A carrier NCO generates corrected local frequencies. These on-chip NCOs generate all the necessary clocks. This architecture advantageously reduces the total hardware necessary for the receiver and the baseband IC thus can be realized with a minimal number of gate count. The invention can accommodate any number of channels in a navigational system such as the Global Positioning System (GPS), GLONASS, WAAS, LAAS, etc. The number of channels can be increased by increasing the circuit clock speed.

Aspects of the present disclosure relate to approaches for determining position and orientation of a tracked tool in a medical navigational context. In one embodiment, the position of a surgical or interventional tool may be determined using the orientation or field direction data such that the determination is independent of field strength or magnitude. Feedback may be provided to a user based on these determinations. In certain embodiments, the navigational system may be auto-calibrated using position information determined independent of field strength or magnitude.

A method and system for processing radar data from a movable platform comprising passing a radar signal through a low noise amplifier; down converting the signal to a lower frequency; filtering out harmonics; sampling using A / D converter at or above Nyquist frequency; determining a scene center; performing a two stage averaging scheme of the received signals with a variable window function based upon the velocity, acceleration of the platform and scene center; coherently averaging N pulses to create an average pulse; performing an inverse Fourier transform; compensating to the scene center by multiplying by a complex exponential based upon GPS and inertial navigational system; summing the average pulses using a low pass filter; repeating the determination of an average pulse for a time period that is less than the Nyquist sample time interval to generate second average pulses; and performing a 2D inverse Fourier transform to obtain SAR image.