摘要:
Systems and methods provide coarse attitude determination without inertial sensor input. An attitude determination module can be configured to compare receiver-calculated values with expected values based on an antenna gain pattern. The differences between calculated and expected values can be used to generate an attitude plane. Platform attitude can be determined from the inclination of the attitude plane with respect to a horizontal reference plane. By way of example, platform roll and pitch can be determined for a receiver unit mounted on an agricultural vehicle. The roll and pitch values provided by the ADM can be used to improve the accuracy of receiver-calculated geo-positions.
摘要:
An display system of an excavating machine includes: a vehicle condition detector detecting information related to a current position and a posture of the excavating machine having a work equipment including a bucket; a memory unit storing position information of a target surface indicating a target shape of an object to be worked; a display unit displaying the bucket and position information of a design surface and the target surface; and a processing unit calculating a position of a blade edge of the bucket based on the information related to the current position and the posture of the excavating machine, and, when at least part of the bucket enters a predetermined range in a periphery of the target surface in a direction orthogonal to the target surface, displaying a trajectory of the blade edge which is calculated based on the position of the blade edge and which exists in the predetermined range.
摘要:
The present invention discloses an electronic device with object guiding function and the method thereof. In one embodiment, the electronic device includes a view window area, via which a user may watch a view. The electronic device may determine whether an object is located in the view window area when the user inputs the position of the object, and may further show an object indicating message or an object guiding message according to the determination result. Therefore, the electronic device is able to provide the user with short distance guiding function. In another embodiment, the electronic device may also show information related to the object located in the view window area, such as information about every mountain range, constellation, user's friends, or specific landmark that is located in the view window area.
摘要:
Method for determining navigation parameters of an aircraft, characterized in that it consists at least in determining the geographic speed {right arrow over (V)}, expressed in a given local fixed coordinate system {{right arrow over (i)}, {right arrow over (j)}, {right arrow over (k)}}, based on the measurements m, of carrier phase increments Δφi of the radio navigation signals originating from a plurality of radio navigation satellites in sight of said aircraft, each of said measurements mi constituting an estimate of the relative speed of said aircraft relative to said satellite projected onto the sight axis linking the aircraft to the satellite, each of said measurements m, being compensated by the apparent radial speed of the satellite.
摘要:
Apparatus and methods determine the rotational position of a spinning object. A satellite positioning system can be used to determine the spatial position of an object, which in turn can be used to guide the object. However, when the object is spinning, such as an artillery shell, then the rotational orientation should be known in order to properly actuate the control surfaces, such as fins, which will also be spinning.
摘要:
A navigation and location system including an inertial navigation unit, a global positioning system, a control system, and a machine readable recording medium storing a plurality of non-transitory machine readable instructions adapted to determine a desired orientation of a sensor at a desired point with respect to the Earth based on determination of orientation of a reference axis of a sensor with respect to locations of multiple points and relationships between the multiple points with a significant degree of accuracy using non-magnetic directional sensing, orientation sensing comprising position determinations via the GPS, orientation data acquired from said inertial navigation unit, and a sequence of measurements along a displaced path including said position determinations and said orientation data. An additional embodiment can include a remote sensing system for remote sensing of an object of interest.
摘要:
A combination of location measurement apparatuses to measure in three dimensions the location of an excavator with respect to a job site, and to further measure the location of an excavated or a topographical feature with respect to the excavator by range finding from the excavator in proximity of the feature and contemporaneously recording measurement data on a computer.
摘要:
A system and method improve guidance system performance. An accuracy improvement module (AIM) can be configured to compare observed and expected inclination compensation factors (ICFs) at a plurality of inclination angles to detect an inaccuracy in antenna height. In response to detecting an inaccuracy, an AIM can determine a revised antenna height that more accurately represents the height of an antenna above ground. A proposed antenna height can be determined using an observed ICF. A fixed vehicle body height can be subtracted from the proposed antenna height to provide a proposed tire radius. The proposed tire radius can be compared to a table of standard tire radii to determine a tire radius value, which can then be added to the fixed vehicle body height to provide a revised antenna height. The revised antenna height can improve the accuracy or calculated ground positions, thereby improving guidance system performance.
摘要:
An display system of an excavating machine includes: a vehicle condition detector detecting information related to a current position and a posture of the excavating machine having a work equipment including a bucket; a memory unit storing position information of a target surface indicating a target shape of an object to be worked; a display unit displaying the bucket and position information of a design surface and the target surface; and a processing unit calculating a position of a blade edge of the bucket based on the information related to the current position and the posture of the excavating machine, and, when at least part of the bucket enters a predetermined range in a periphery of the target surface in a direction orthogonal to the target surface, displaying a trajectory of the blade edge which is calculated based on the position of the blade edge and which exists in the predetermined range.
摘要:
A method for determining absolute orientation of a platform is disclosed. In one embodiment, a first sky polarization data set for a first time Ti is measured using a sky polarization sensor disposed on a platform. A second sky polarization data set is obtained at a second time Tj. A difference in orientation between the first sky polarization data set and the second sky polarization data set is determined using an orientation determiner. The difference in orientation is provided as at least one orientation parameter for the platform at time Tj. The at least one orientation parameter is used to provide a direction relative to a reference point on the platform.