40 results about "Target angle" patented technology

The invention provides a verification code verification method and device, equipment, a medium and a program product, and aims to solve the problem that an automatic script in the related technology cannot realize automatic testing of verification of a verification code of a rotary sliding block. The method comprises the steps of performing separation processing on a rotating main body and a target pattern in a verification code image to obtain a main body binary mask corresponding to the rotating main body and a target binary mask corresponding to the target pattern; based on the main body binary mask and the target binary mask, a target angle difference between the rotating main body and the target pattern is calculated, and the target angle difference is used for indicating the rotating main body to rotate to a rotating angle matched with the target pattern; generating a rotation track based on the target angle difference by using a slow motion function, wherein the rotation track comprises random disturbance and a random pause point; and controlling the rotating main body to rotate based on the rotating track to obtain a verification result. According to the invention, automatic testing of verification of the rotary sliding block verification code can be realized.

A hip navigation system is provided that includes a navigation device comprising one or more sensors configured to sense changes in orientation and rotation, a reference sensor device comprising one or more sensors configured to sense changes in orientation and rotation, and a femur sensor device comprising one or more sensors configured to sense changes in orientation and rotation. The hip navigation system is provided for navigating a cup toward target angles. The hip navigation system is provided for determining changes in leg length and / or joint offset. Methods of using the hip navigation system are provided. A graphical user interface of the navigation device is provided.

This invention discloses a radar target angle measurement method under main lobe interference based on a joint air-pole cancellation algorithm. The implementation steps are as follows: receiving the echo signal from a dual-polarized radar antenna array; estimating the autocorrelation matrix of the auxiliary antenna using the echo signal; performing multi-directional beamforming on the main antenna echo signal, calculating the cross-correlation matrix of the main and auxiliary antennas using the beamforming results, and calculating adaptive weights using the minimum mean square error criterion; calculating the joint air-pole cancellation output using the adaptive weights, and using the scanning angle corresponding to the maximum magnitude in the joint air-pole cancellation output as the target angle estimate. The angle measurement method designed in this invention significantly improves the accuracy of target angle estimation while maintaining low computational load under main lobe interference conditions, and has high engineering application value.

The application particularly relates to a radar main lobe interference suppression method based on direction constraint, which realizes suppression of interference and separation of target echo in a main lobe suppression type interference scene by embedding array manifold vectors into FastICA fixed point iteration and applying direction constraint to the separation vectors after each update so that the separation vectors are always focused on a target angle subspace.

The present application relates to airborne fire control radar technical field, disclose a kind of swash plate machine phase scanning radar installation angle self-adapting correction method, respectively obtain the target angle before and after radar array rotation, according to the target angle before and after rotation, respectively calculate the geographic system target angle centroid before and after rotation, and predict the predicted angle of target after rotation;Convert the geographic system target angle centroid to radar system, calculate the installation angle correction value;Real target angle is calculated using the installation angle correction value updated installation angle.The present application can be through the change of target angle in the process of long-distance target tracking with servo angle to deduce servo actual angle deviation, improve target tracking precision by real-time correction this deviation.

The invention discloses a product detection method and device, and the method comprises the steps: setting a recognition region on a product detection image, and enabling the recognition region to comprise a plurality of fan-shaped selection regions which are sequentially and adjacently arranged; detecting whether a straight line exists in a fan-shaped selection area of the identification area; and if yes, obtaining a target angle between target straight lines based on the fan-shaped selection area where the straight line is located and the relative positions of the plurality of fan-shaped selection areas, and carrying out product detection according to the target angle. According to the invention, the method achieves the quick angle detection of multiple straight lines through the recognition region formed by the fan-shaped selection region, simplifies the operation complexity of angle measurement, and improves the efficiency and accuracy of angle measurement.

The application discloses a method and device for realizing CORDIC, and the method comprises the following steps: obtaining a target angle; judging whether the absolute value of the target angle is within a set threshold range; if yes, performing a jump-step CORDIC iteration operation; otherwise, performing a full-step CORDIC iteration operation; the full-step CORDIC iteration operation refers to performing a 0-n step CORDIC iteration operation; the jump-step CORDIC iteration operation refers to skipping a 0-m step CORDIC iteration operation, and performing a m+1-n+m+1 step CORDIC iteration operation, wherein m is 0 or a positive integer. According to the application, the calculation precision of CORDIC can be improved.

The application discloses a kind of considering the angle restraint guidance method of maneuvering target of driving instrument lag, in this method, by setting fuzzy sliding mode backstepping guidance law, the guidance law can realize the interception of maneuvering target under the condition of existing automatic driving instrument lag, improve the guidance precision of interceptor, the method is also simultaneously with angle restraint, can improve the damage ability of interceptor, has important engineering significance.

Device for aligning a sonar transducer for a watercraft, comprising - a transducer rod 18 rotatably mounted about an essentially vertical axis of rotation, at the lower end of which a sonar transducer 20 is arranged, - a motor drive for rotating the encoder rod 18 around the axis of rotation, - a foot pedal in the form of a rocker pedal that can pivot around an essentially horizontal pedal axis 26 and - an electronic control unit 24, characterized in that - the rocker pedal 26 has two mechanical operating modes, namely a spring mode in which a return spring 44 returns the rocker pedal 26 to a central position 46, and a locking mode in which a friction or disc brake 52 holds the rocker pedal 26 in an assumed position, and - the control unit 24 in spring mode in a speed mode converts a deviation of the rocker pedal 26 from the center position 46 into a rotational speed of the transmitter rod 18 and in fix mode in a position mode converts a position of the rocker pedal 26 into a target angle of the transmitter rod 18

The application discloses a method for correcting deflection of an antenna radiation beam under a radome based on time reversal, and belongs to the technical field of radars. The method is used for processing signals received by each array element in an array antenna by using the time reversal method, and re-emitting the processed time reversal signals from the corresponding array element, so that more accurate beam pointing is achieved, and the aiming error is reduced. Based on the time reversal technology, the application can realize the effect of adaptive direction backtracking, and ensure that the target angle has the maximum gain under the target frequency; compared with a traditional phased array feeding method under the radome, the method has a better aiming error index.

Embodiments of the application disclose a double-sided component layout method and device, electronic equipment and a storage medium. The method comprises: determining a target angle range according to a reference angle of a target site and first information; determining a target distance range according to a reference distance of the target site and second information; determining a target height range according to a reference height of the target site and third information; and determining a target angle, a target distance and a target height of the double-sided component layout based on the target angle range, the target distance range, the target height range and a pre-established economic calculation model. The technical scheme of the embodiments of the application achieves the technical effect of quickly and accurately determining the parameters of the double-sided component layout.

The application discloses a kind of based on space target angle distance auxiliary inertial navigation error fast determination method, by at least two pointing of star camera optical axis is carried out high frequency multiple observation to obtain sufficient effective asynchronous measurement information, to ensure the observability of navigation error parameter;By establishing the optimization model with navigation position error as the estimated parameter, the first round optimization is carried out using nonlinear least square algorithm, and the position error is iteratively estimated;By establishing the optimization model with navigation position error and velocity error as joint estimated parameter, the first round optimization result is used as position error parameter initial value, the carrier position of inertial navigation solution is corrected using the position error estimated by the first round, and the second round optimization is carried out using nonlinear least square algorithm again, the change trend of carrier position in state propagation process can be effectively extracted, so as to effectively estimate the velocity error, and the estimation accuracy of position error is further improved based on the first round optimization.

The application belongs to the field of underwater target direction estimation, and combines a linear prediction algorithm with an ETAM algorithm of a vector hydrophone array to estimate the direction of an underwater target. Specifically, the application comprises the following steps: 1) constructing a data matrix of a virtual array after synthetic aperture by using the principle of the ETAM algorithm of the vector hydrophone array; 2) performing high-order linear prediction to solve forward and backward linear prediction coefficient vectors of the matrix; 3) extending the virtual array by k elements to the right or to the left; and 4) performing direction estimation on a signal matrix received by the extended virtual array in the previous step by using a conventional beam forming algorithm of the vector hydrophone array to obtain the target angle. The DOA estimation method of the moving platform vector hydrophone array based on the linear prediction and the ETAM algorithm can realize target direction estimation under the condition of lower signal-to-noise ratio and fewer array elements, and improves the target direction estimation precision and resolution of the underwater moving array.

1. The name of the design product: graphical user interface for controlling the angle of the propeller of an electronic device. 2. The use of the design product: displaying power information, battery information, gear information, heading angle, heading direction, etc. in different driving modes through the state display interface. 3. The design points of the design product: the graphical user interface. 4. The picture or photo that best indicates the design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: human-computer interaction interface for controlling the angle of the propeller of a ship. 7. Other situations requiring explanation: The human-computer interaction method of the graphical user interface: Design 1's main view is the interface for the ship's steering control propeller tilting function. Pressing and holding the slider in the tilting interface and pushing it upwards simultaneously displays a real-time angle pop-up. Upon reaching the target angle, the interface changes from the Design 1 main view to Design 1 interface state change diagram 1. The user long-presses the tilting button (tilt up) in the tilting interface; the button displays the pressed state, and the slider moves upwards automatically, moving the current angle to the target angle, with real-time angle changes, thus displaying the interface changes from Design 1 interface state change diagram 1 to Design 1 interface state change diagram 2. When the tilting angle reaches the system's recognized maximum angle, the tilting button (tilt up) becomes unavailable, and the one-key reset button (back to neutral) becomes available, thus displaying the interface changes from Design 1 interface state change diagram 2 to Design 1 interface state change diagram 3. The user long-presses the reset button; the button displays the pressed state, and the slider moves downwards automatically, moving the current angle downwards to the target angle, with real-time angle changes, thus displaying the interface changes from Design 1 interface state change diagram 3 to Design 1 interface state change diagram 4. The interface changes are as follows: Design 2's main view is the interface for the ship's driving control propeller tilting function. Press and hold the slider in the tilting interface and push it upwards. At the same time, a real-time angle pop-up window appears. When the target angle is reached, the interface changes from the main view of Design 2 to Design 2 interface state change diagram 1 are displayed. The user long-presses the tilting button (tilt up) in the tilting interface. The button shows the pressed state, and the slider moves upwards automatically. The current angle moves up to the target angle, and the angle changes in real time. This shows the interface changes from Design 2 interface state change diagram 1 to Design 2 interface state change diagram 2. When the tilting angle reaches the highest angle recognized by the system, the tilting button (tilt up) in the interface becomes unavailable, and the one-key reset button (back to neutral) becomes available. This shows the interface changes from Design 2 interface state change diagram 2 to Design 2 interface state change diagram 3. The user long-presses the reset button. The button shows the pressed state, and the slider moves downwards automatically. The current angle moves down to the target angle, and the angle changes in real time. This shows the interface changes from Design 2 interface state change diagram 3 to Design 2 interface state change diagram 4.

The invention relates to an angle measurement method, device and equipment for preventing angle misjudgment based on vortex electromagnetic waves, and relates to the technical field of radar signal processing. The method comprises the following steps: by taking a circular ring array as an emission source, generating and emitting a plurality of modal vortex electromagnetic waves to irradiate a target to obtain an echo signal; bimodal combinations are selected, echo signals corresponding to the combinations are processed, and angle measurement values corresponding to the combinations are obtained; calculating the error of any two groups of angle measurement values, comparing each error with a preset threshold value, and judging whether angle misjudgment exists or not; if all the errors are within a preset threshold value, judging that no angle misjudgment exists, and outputting a preset angle measurement value as a target angle measurement result; and if the error exceeds the preset threshold value, judging that angle misjudgment exists, screening undisturbed measurement values through the consistency and the difference degree of each group of angle measurement values, and outputting a target angle measurement result. According to the invention, stable, continuous and accurate measurement of the target angle can be realized in a complex interference environment.

A processing circuit of an instruction generating system for a work machine including a plurality of members and a plurality of hydraulic actuators is configured to execute the following steps: acquire current angle information indicating a current angle of a tip end side member with respect to a base end side member; calculate a current torque that rotates the tip end side member with respect to the base end side member based on the current angle information by inverse dynamics calculation; acquire target angle information indicating a target angle of the tip end side member with respect to the base end side member; calculate a target torque for tracking the target angle by the current angle based on the target angle information; calculate a reference speed command value indicating a target speed of the hydraulic actuator based on the target angle information; and correct the reference speed command value in a manner that reduces a torque deviation that is a deviation of the target torque from the current torque, and generate a control command value for controlling a speed of the hydraulic actuator.

The invention is applicable to the field of marine ship control, and provides a marine ship dynamic positioning method based on an anemorumbometer, which comprises the following steps: S1, acquiring relative wind speed, wind direction and prow azimuth angle, and converting the relative wind speed, wind direction and prow azimuth angle into absolute wind speed / wind direction under a north-east coordinate system through a rotation matrix; s2, recording the initial position as a target point, and setting the reverse direction of the absolute wind direction as a target angle; s3, establishing a north-east coordinate system and calculating longitudinal / transverse / angular deviation; s4, adjusting a rudder angle accelerator by stages, correcting the transverse deviation, stabilizing the longitudinal position and the course in combination with the deviation trend, and adaptively controlling the frequency; s5, GNSS positioning precision and rudder angle feedback are monitored, and an alarm is given and the task is terminated when abnormity occurs; according to the invention, a single-thrust system is adapted, so that the cost and the maintenance pressure are reduced; the wind disturbance resistance is high, and the positioning stability is improved; energy conservation and safety are both considered, and the scene adaptability is wide.

A hip navigation system is provided that includes a navigation device comprising one or more sensors configured to sense changes in orientation and rotation, a reference sensor device comprising one or more sensors configured to sense changes in orientation and rotation, and a femur sensor device comprising one or more sensors configured to sense changes in orientation and rotation. The hip navigation system is provided for navigating a cup toward target angles. The hip navigation system is provided for determining changes in leg length and / or joint offset. Methods of using the hip navigation system are provided. A graphical user interface of the navigation device is provided.

The invention relates to the technical field of intelligent monitoring, in particular to a dike underwater foundation scouring monitoring method and device based on an underwater robot. The method comprises the following steps: controlling an underwater robot to obtain monitoring data of a first target angle and monitoring data of a second target angle of a plurality of to-be-monitored sites; wherein the monitoring data comprises image data and sonar data; determining a joint feature based on the monitoring data of the first target angle and the monitoring data of the second target angle; wherein the combined features are used for representing scouring state features of the multi-angle to-be-monitored point positions, inputting the combined features into a preset deep learning model, and determining scouring states of the plurality of to-be-monitored point positions; based on the scouring states of the multiple to-be-monitored points, determining a state network diagram of the dike underwater foundation; and determining the scouring state of the dike underwater foundation based on the state network diagram. Therefore, the precision of monitoring the scouring of the dike underwater foundation can be improved.

This invention relates to an unmanned surface vessel (USV) with a rapid maneuvering and anti-interference steering assistance system. By installing a jet engine and a simple engine turntable on the mast, aerodynamic thrust is provided to the hull in all directions, transferring steering power from underwater to above water, thus overcoming the influence of water flow resistance. The turntable can adjust to the target angle within milliseconds, rapidly changing the direction of steering power; the jet engine's power adjustment time is also very short, quickly changing the direction and magnitude of the steering power on the hull side. Based on a novel USV platform with added equipment, this invention has developed a control allocation strategy to maximize the efficiency of the two power systems. Compared with traditional USV systems, this invention changes the power source for heading control from underwater to above water, and attitude changes from servo deflection to jet power, eliminating the lag caused by water flow resistance and providing a rapid response capability to change heading. This solves many problems related to USV heading control and crosswind resistance.

The invention discloses an automatic deviation correction method and device, a workpiece detection system and terminal equipment, and relates to the technical field of workpiece detection.The method comprises the steps that a sensor is controlled to send a first detection signal, and a second detection signal received by the sensor is obtained; the second detection signal is obtained by reflecting the first detection signal; determining a first identification result of the target workpiece according to the second detection signal; the second detection signal serves as input, a second recognition result is output through a preset recognition model, and the second recognition result is used for representing whether the second detection signal is abnormal or not; and if the first identification result is not matched with the second identification result, controlling the sensor to rotate to a first target angle, and controlling the reflecting plate to rotate to a second target angle. The problem that in the workpiece transportation process, due to polishing of the workpiece carrier, a detection system is triggered by mistake is effectively solved.

The application discloses a SAR image arbitrary orientation ship target detection and recognition method. The application adopts a separate regression branch to predict the angle, decouples the angle prediction branch from other branches, realizes more accurate and flexible estimation of the target angle, adopts the integral form expression method proposed in the DFL to predict the angle and the rectangular frame, effectively improves the prediction accuracy, strengthens the sensitivity of the model to the target size and direction change, further improves the performance in the target detection task, and simultaneously, adds the radian ratio in the loss function design, can directly minimize the angle difference between the predicted frame and the real frame, and significantly improves the convergence speed of the model when processing the rotating target detection. The application not only improves the accuracy of the model for the rotating target detection, but also enhances the adaptability of the model to the angle change, so that when facing the complex background and the target with various postures, the application can provide more robust detection performance.

The invention provides an angle estimation super-resolution method and system based on deep learning, and the method comprises the steps: obtaining signal data received by a radar array, and carrying out the preprocessing of the signal data; inputting the preprocessed signal data into a pre-constructed signal enhancement model to obtain a denoised and reconstructed signal; the signal enhancement model comprises a denoising network and a reconstruction network which are cascaded in sequence; wherein the denoising network is composed of a plurality of full-connection layers and is used for carrying out noise suppression on input signals; the reconstruction network is composed of a plurality of one-dimensional convolution layers and a full connection layer, and is used for improving the resolution of the denoised signal; and obtaining an estimation result of a target angle through a pre-constructed angle estimation model based on the denoised and reconstructed signal. According to the method provided by the invention, angle estimation is converted into mode recognition by using deep learning, angle estimation is carried out by extracting the features of the signal data, the defects of a traditional angle estimation method are overcome, and the angle estimation precision is improved.

The present application relates to airborne fire control radar technical field, disclose a kind of electronic warfare angle measurement ambiguity confirmation method based on radar beam, first according to the phase difference of obtaining angle measurement element receiving echo, the phase angle transformation relationship is used to accurately solve target angle, to the angle of part existing phase ambiguity, using radar and with protection beam to suspected angle target is again detected signal, confirm whether target truly exists in the angle, eliminate angle ambiguity, judge the actual target angle, to realize accurate angle measurement.The method is not restricted by antenna size and other hardware conditions, the implementation method is more feasible, and the calculation method is simple, under the premise of not affecting the normal work of radar, can realize active detection to the initially estimated target angle, more real-time.

The application relates to the technical field of intelligent monitoring, in particular to a dike underwater foundation scouring monitoring method and device based on an underwater robot. The method comprises the following steps: controlling the underwater robot to obtain monitoring data of a first target angle and monitoring data of a second target angle of a plurality of to-be-monitored points; wherein the monitoring data comprises image data and sonar data; determining joint features based on the monitoring data of the first target angle and the monitoring data of the second target angle; wherein the joint features are used to represent the scouring state features of the multi-angle to-be-monitored points; inputting the joint features into a preset deep learning model to determine the scouring states of the plurality of to-be-monitored points; determining a state network diagram of the dike underwater foundation based on the scouring states of the plurality of to-be-monitored points; and determining the scouring state of the dike underwater foundation based on the state network diagram. In this way, the application can improve the precision of dike underwater foundation scouring monitoring.

The invention relates to a gap adjusting method for a leveling machine, and belongs to the field of leveling machines. According to the technical scheme, the gap adjusting method for the leveling machine comprises the following steps that angles are obtained, and the angles are the current angles between a front connecting rod and a rear connecting rod of the leveling machine and the horizontal direction; calculating a current inlet gap and a current outlet gap according to the sum, and comparing the current inlet gap and the current outlet gap with a set inlet gap and a set outlet gap; when the two difference values are within the set deviation range, the leveling machine can continue to be used, and otherwise, the target angle and the target angle are calculated according to the set inlet gap and the set outlet gap; and the included angle between the front and rear connecting rods and the horizontal direction is adjusted. According to the method, dynamic monitoring and precise adjustment are achieved through a closed-loop process, the angle and the gap are correlated through a mathematical model, deviation is automatically judged, compared with traditional manual adjustment, the precision and efficiency are higher, errors are reduced, the leveling quality is consistent, and the method is suitable for high-precision plate machining.

Embodiments of the present application disclose a target angle measurement method. The method comprises the following steps: determining a plurality of first power values according to a first signal set, the first signal set being a set of target signals received by each array element of a sparse antenna array, the target signals being mixed signals composed of signals of two targets to be measured, and the first power values being power values corresponding to the signals of the two targets to be measured; for each first power value, determining a plurality of second power values corresponding to the first power value; and determining angles of the targets to be measured according to the first power values and the second power values corresponding to each first power value. The method can avoid the problem that the angle of one target is just at the position of a large side lobe of the angle of another target, thereby improving the accuracy of target angle measurement.

This invention provides a method for preparing TEM samples, comprising: selecting another opening structure as an auxiliary positioning structure in the X direction of the target opening structure, wherein the depth direction of both the target opening structure and the auxiliary positioning structure is in the Z direction; during cutting, the plane formed by the intersection of the cutting direction with the Z and X directions forms a target angle, thereby allowing cutting to stop when the auxiliary positioning structure is cut; at this point, the distance between the cutting stop position and the target opening structure can be determined based on the target angle and the distance between the target structure and the auxiliary positioning structure; therefore, the target opening structure can be accurately located during sample thinning, and the distance from the cutting stop position to the target opening structure can be adjusted according to individual needs, avoiding the need for frequent scanning observations due to uncertain cutting stop positions.

The present invention provides a control device for a rotating cylinder that can align horizontally or precisely control a target angle using six obliquely cut wheels, and simultaneously adjust the height and position of a rotation axis. Abbreviated figure: 1

Provided is a rotating device 100 capable of positioning a rotating member 102 at a target angle position with high accuracy. The rotating device 100 comprises a fine movement mechanism 109 that is provided with a base member 110 and a coarse movement mechanism 101 that is provided with a housing 104 and a rotating member 102 at least part of which is housed in the housing 104 and that is disposed on the base member 110. The rotating member 102 is capable of rotating about a rotating member axis 103 with respect to the housing 104, and the entire coarse movement mechanism 101 is capable of rotating about the rotating member axis 103 with respect to the base member 110.