12 results about "Relative direction" patented technology

Aspects presented herein may enable a first UE to estimate the angle-of-arrival (AoA) of a second UE. In one aspect, a first UE measures a set of phase difference of arrivals (PDoAs) for a set of radio links between the first UE and a second UE, each radio link in the set of radio links is associated with a different wavelength. The first UE determines a general function that is associated with a probability in which the second UE is at a set of relative directions or a set of relative positions compared to the first UE. The first UE estimates a relative direction or a relative position of the second UE compared to the first UE, where the relative direction is included in the set of relative directions and the relative position is included in the set of relative positions.

The invention discloses a pupil plane self-adaptive optical path adjusting method. The method comprises the following steps: respectively inserting two optical path adjusting boxes into corresponding sub-telescope optical paths of a beam combining telescope; adjusting the positions of the sub-telescope and the beam-combining telescope according to the detection baseline requirement of the spatial distributed optical synthetic aperture detection system; adjusting a pointing adjusting mirror of the beam-combining telescope to enable the beam-combining telescope to receive the observation light beams from the sub-telescopes; adjusting the relative direction of the sub-telescope, and keeping the relative direction in a required deviation range; an optical path adjusting box is moved to carry out large optical path adjustment, and the optical path difference between the sub-telescopes is adjusted to a micron order; a comprehensive adjuster in the optical path adjusting box is used for small optical path and inclination adjustment, so that the optical paths and directions of the sub-telescopes are consistent; the exit pupil position of the spatial distributed optical synthetic aperture detection system is adjusted through the curvature adjusting function of a comprehensive adjuster in the optical path adjusting box, so that the exit pupil position of the system does not change along with the change of the optical path, and the self-adaptive optical path adjustment of the pupil plane is completed.

This provides a method for denoising seismic profiles based on an improved Laplacian filter and reverse time migration. [Solution] A method for denoising earthquake profiles based on an improved Laplacian filter and reverse time migration, comprising the steps of: collecting earthquake data and obtaining imaging results after reverse time migration processing; calculating the difference of the second derivatives of the Laplace operator in the x and z directions, displaying them in 8-neighbor second derivative form, decomposing this into four Laplacian filters including two relative directions to obtain an improved Laplacian filter; and using the improved Laplacian filter relating only to the second derivative in the z-axis direction, performing noise reduction by filtering on the imaging results after reverse time migration processing.

To fix a variation direction of an electric field vector of horizontally polarized waves emitted to an observation object at a right angle with respect to a specific plane.SOLUTION: The orientation direction of an antenna 201 is adjusted so that an azimuth direction Az of the antenna 201 coincides with a normal direction of a specific plane, and a bore site direction Boa of the antenna 201 is oriented in a direction deviated according to a deviation angle from a direction oriented to an observation object 102. The specific plane is a plane obtained by rotating a plane formed by a relative direction of the antenna 201 to the observation object 102 and the normal direction of a ground surface at the position of the observation object 102, according to a surface rotation angle around the normal direction of the ground surface at the position of the observation object 102. The surface rotation angle is set as the angle around the normal direction of the ground surface. The deviation angle is an angle in an elevation direction of the antenna 201.SELECTED DRAWING: Figure 11

To provide technique which integrates a first module materializing a first function and a second module materializing a second function, and which enables the relative orientation and elevation angle of the first and second modules to be freely adjusted.SOLUTION: A joint mechanism is provided, which connects a first module materializing a first function and a second module materializing a second function, the joint mechanism comprises: a movable portion having a first spherical surface forming portion which forms a first spherical surface and a first support portion which supports the first module; a pedestal portion having a second spherical surface forming portion which forms a second spherical surface, a least a part of which engages with the first spherical surface and a second support portion which supports the second module; and a fixing portion which fixes the movable portion and the pedestal portion while maintaining the relative positional relationship between the first spherical surface and the second spherical surface.SELECTED DRAWING: Figure 1

Aspects presented herein may enable a first UE to estimate the angle-of-arrival (AoA) of a second UE. In one aspect, a first UE measures a set of phase difference of arrivals (PDoAs) for a set of radio links between the first UE and a second UE, each radio link in the set of radio links is associated with a different wavelength. The first UE determines a general function that is associated with a probability in which the second UE is at a set of relative directions or a set of relative positions compared to the first UE. The first UE estimates a relative direction or a relative position of the second UE compared to the first UE, where the relative direction is included in the set of relative directions and the relative position is included in the set of relative positions.

To propose a product in which reduction in generation efficiency of fine bubbles due to a relative direction in which fluid flows can be suppressed more.SOLUTION: A product is used in a state in which at least a part thereof is in contact with liquid. Irregularity is formed in a defined portion in the part being in contact with the liquid. Ten-point average roughness Rz of the irregularity satisfies a condition of being within a range of 5 to 500 μm. The product is, for example, a tabular member having a predetermined angle of elevation with respect to a direction in which the liquid flows, or, for example, a tabular member in which a negative pressure is applied to at least one surface of an upper and lower surfaces.SELECTED DRAWING: Figure 2

A target fast determination method based on only angle measurement information, which realizes the effect of determining the relative target direction only by using low-cost angle measurement information, belongs to the technical field of satellite navigation, guidance and control. The target fast determination method comprises the following steps: step one: obtaining the angle measurement information of the relative navigation output on the satellite, and calculating the relative direction angle; step two: using the relative direction angle to calculate the conversion relationship between the offset direction coordinate system and the orbit coordinate system; step three: using the conversion relationship between the offset direction coordinate system and the orbit coordinate system to calculate the control angle used in the relative direction control. According to the relative direction angle calculated by the only angle measurement information of the navigation output on the satellite, the computer on the satellite avoids processing the distance measurement information, and the algorithm is simple.

The invention discloses an MEMS installation error self-calibration method based on dynamic response, particularly relates to the technical field of MEMS inertial sensor measurement and calibration, and is used for solving the problem of system error caused by non-ideal level of a reference plane in an existing calibration method. The method comprises the following steps: acquiring acceleration data under a plurality of fixed attitudes, calculating an actually measured projection vector, analyzing the relative direction relation of the projection vector and the deviation of theoretical geometric constraints to construct a projection deviation data set, distributing fitting weights based on the spatial distribution density of data points, extracting an actual normal vector of a reference plane through weighted plane fitting, and calculating the actual normal vector of the reference plane. And constructing a coordinate transformation matrix according to a spatial rotation relation between an actual normal vector and an ideal gravity direction to correct an installation error parameter.

This provides a method for denoising seismic profiles based on an improved Laplacian filter and reverse time migration. [Solution] A method for denoising earthquake profiles based on an improved Laplacian filter and reverse time migration, comprising the steps of: collecting earthquake data and obtaining imaging results after reverse time migration processing; calculating the difference of the second derivatives of the Laplace operator in the x and z directions, displaying them in 8-neighbor second derivative form, decomposing this into four Laplacian filters including two relative directions to obtain an improved Laplacian filter; and using the improved Laplacian filter relating only to the second derivative in the z-axis direction, performing noise reduction by filtering on the imaging results after reverse time migration processing.

The present invention discloses a method for extracting node-related observation information, which belongs to the field of deep space exploration technology. The implementation method of the present invention is as follows: according to the characteristics that the relative pointing information between nodes and the relative position vector information between nodes satisfy the multi-view geometric constraints between nodes, the opportunity features in the common observation area of ​​the node optical navigation camera are matched, and the relative pointing information between nodes is solved by the epipolar constraint equations of multiple groups of features; the morphological features with known absolute positions are searched in the common observation area, and if such features exist, the laser rangefinder information is combined to obtain the relative position vector information between nodes by optical measurement geometric relationship; an evaluation function for selecting node-related information is constructed based on the Sampson distance, and information with a smaller Sampson distance is selected as the node-related information according to the evaluation function, so as to provide accurate node-related information for flexible attachment state collaborative navigation. The node state is corrected according to the accurate node-related information to improve the accuracy of flexible attachment state collaborative navigation.

Performing deformation analysis of a wind turbine blade It is described a method of performing deformation and / or orientation analysis of a wind turbine rotor blade, the method comprising: acquiring first position data (104) of a first navigation system probe (105, 262a) mounted at the blade to provide position at a first location (263a); acquiring second position data (106) of a second navigation system probe (107, 262b) mounted at the blade to provide position at a second location (263b); deriving first direction information (264) at least regarding a relative direction of the first location (263a) and the second location (263b) based on the first position data and the second position data.