31results about How to "Accurate Calibration" patented technology

The invention relates to the technical field of multi-beam sounding calibration, and discloses a multi-beam sounding online real-time calibration method. The method comprises the following steps: acquiring original water depth data and corresponding sensor attitude data in real time; generating a data quality evaluation result containing a data credibility index and a data abnormal distribution feature based on the original water depth data; triggering a dynamic calibration mechanism containing a calibration period adaptive adjustment strategy and a calibration parameter optimization rule according to the data credibility index; optimizing the target calibration rule parameters in combination with the sensor attitude data to generate an optimized calibration parameter set, and correcting the original water depth data in real time by using the parameter set to generate primary calibration data; and performing topographic feature consistency check on the primary calibration data, if the primary calibration data does not pass the topographic feature consistency check, starting a re-calibration process containing a rule base updating mechanism and a parameter iteration mechanism, and analyzing a deviation trend based on historical calibration records to generate a system error prediction model.

The application discloses a FinFET device temperature-dose coupling modeling method, and belongs to the field of advanced semiconductor technology. The application solves the problem that a traditional irradiation model cannot give the degradation rule of a FinFET device under different temperature-dose. The application constructs a multi-physical field coupling nonlinear irradiation model, overcomes the limitation that a traditional total dose model only depends on the electric field intensity, effectively breaks through the limitation that a hole yield in the traditional model is only affected by the electric field and cannot reflect the degradation rule under different temperature-dose, and guarantees the accuracy of simulation results. Based on experimental data feedback, the application realizes dynamic correction of coupling factors, and improves the precision of the temperature-dose coupling model. By extracting the electrical characteristic parameter drift, the application constructs an analytical function of the evolution of the coupling factors with temperature and dose, and realizes accurate parameterization characterization of the radiation-induced trap charge accumulation process under different temperature-dose. The application can be applied to temperature-dose coupling modeling of a FinFET device.

This invention provides a method for testing the ultimate engagement torque of an electromagnetic jaw clutch, comprising: disengaging the clutch and keeping the driving motor stationary; controlling the driven motor with zero torque and calibrating a braking torque T for a magnetic powder brake connected to the driven side of the clutch, or calibrating a braking torque T for a fixed torque stall function for the driven motor; the driving motor drives the driving side of the clutch to rotate at an engagement speed n1 as the target speed; after the driving motor stabilizes at the engagement speed n1, energizing the clutch to engage the driving and driven sides of the clutch; if engagement is successful and the engagement time is within a preset engagement time range, increasing the braking torque T and repeating the above steps; if engagement fails, or engagement is successful but the engagement time exceeds the preset engagement time range, energizing and stopping the test, and taking the braking torque T of the last successful engagement with an engagement time within the preset engagement time range as the ultimate engagement torque.

This invention discloses a method and system for verifying the integrity of approval data in a trusted data space, relating to the field of data security technology. The method includes: assessing and determining an approval risk coefficient and an approval urgency index based on the data attribute information and approval-related characteristics of the data to be approved; calculating and obtaining an appropriate approval time limit based on the approval risk coefficient and approval urgency index; using a time limit shorter than the appropriate approval time limit as an efficiency constraint to optimize the initial approval strategy, selecting the combination of approval nodes and the combination of approval node verification depths corresponding to the minimum predicted approval error probability as the appropriate approval scheme; and performing integrity verification on the data to be approved within the trusted data space according to the appropriate approval scheme. This invention effectively improves the integrity, reliability, and processing efficiency of the entire approval data chain in a trusted data space.

The utility model relates to environmental protection monitoring technical field discloses a kind of collection calibration devices, including connecting frame, the output end of electric push rod is hinged to one end of connecting frame, and the other end of connecting frame is connected with positioning notch, the bottom end of positioning notch hinged movement rod, blanking cable is flexible cable, one end of blanking cable is connected with data acquisition head, for transmitting data, the other end of blanking cable is wound on the support roller of external equipment, for retraction, blanking cable is fixed through supporting cylinder. The utility model is contracted by electric push rod, to control the support of outer bracing plate loosening to the inner wall of pipeline, outer bracing plate contracts, the extension length of the device is controlled by the retraction of blanking cable, to detect each area of pipeline, subsequent data comparison calibration analysis can be carried out in real time, data calibration is more accurate, and more complex narrow environment area can also be adapted.

This application relates to the field of laser welding machine technology and discloses a method for laser focus calibration in a laser welding machine. The method includes: detecting and acquiring the weld position of a first steel plate and a second steel plate; calibrating the initial position of the laser spot based on the weld, such that the initial position is close to or at the center of the weld; shifting the laser spot to one side of the first steel plate and continuously performing cupping tests on the weld; stopping the cupping tests when the weld between the first and second steel plates cracks, and recording the first total shift; controlling the laser spot back to the initial position, shifting the laser spot to one side of the second steel plate, and continuously performing cupping tests on the weld; stopping the cupping tests when the weld between the first and second steel plates cracks, and recording the second total shift; calculating the center position of the weld based on the first and second total shifts. This application can accurately calibrate the position of the laser spot relative to the weld center, ensuring the stability of the welding quality.

The invention relates to a three-point contact ball bearing axial stress calibration device and calibration method, and belongs to the technical field of bearing test.The three-point contact ball bearing axial stress calibration device comprises a control unit, a shell and a main shaft arranged in the shell, the main shaft is sleeved with a first three-point contact ball bearing and a second three-point contact ball bearing, and the outer side of the main shaft is further sleeved with an intermediate bearing assembly; a radial loading device is also arranged in the shell; a thrust sleeve in sliding fit with the shell is arranged on the outer side of the first three-point contact ball bearing, the second three-point contact ball bearing is in sliding fit with the shell, a transition sleeve abutting against the second three-point contact ball bearing is arranged in the shell in a sliding mode, an axial loading device is arranged on the outer side of the shell, and a first pressure sensor is arranged between the axial loading device and the thrust sleeve. A limiting piece is further arranged on the outer side of the shell, and a second pressure sensor is arranged between the transition sleeve and the limiting piece. According to the invention, direct measurement and calibration of the axial force transmitted to the far-end three-point contact ball bearing in a multi-bearing series connection structure can be realized.

The invention discloses a reference current calibration method for a nerve stimulation device. The reference current calibration method comprises the following steps: step 1, assuming a reference current value constant; 2, setting an output current, and generating voltage amplification through a 10-ohm load; step 3, calculating an actual reference current value by using an ADC function of the ENS001 chip; 4, changing the assumed reference current value constant into the actual reference current value calculated in the step 3; 5, repeating the steps 2-3, and calculating the actual reference current value obtained for the second time; 6, judging whether the difference between the actual reference current value obtained in the step 3 and the actual reference current value obtained for the second time in the step 5 is greater than 5%, and if the difference is greater than 5%, repeating the step 4 and the step 5; obtaining a first final reference current value until the difference is less than or equal to 5%; and step 7, the final reference current value is stored in the flash of the ENS001 chip. The reference current of the nerve stimulation device can be quickly and accurately determined, and the reference current is stored in a flash of a chip, so that the calibration precision and consistency of products are improved.

The invention belongs to the technical field of target positioning, and particularly relates to a ground target positioning method fusing unmanned aerial vehicle multi-view images and laser ranging, which comprises the following steps: calibrating a camera and a pulse laser range finder, and determining internal and external parameters of each sensor and the mounting position and direction of the laser range finder; detecting a two-dimensional pixel coordinate of the tracking target; carrying out Gaussian positive calculation on a given geodetic coordinate system to a space rectangular coordinate system; preliminarily resolving the three-dimensional coordinates of the target; the pulse laser range finder works synchronously, measures the distance from a target to the unmanned aerial vehicle in real time, combines the target distance measured by the laser range finder as an input parameter with feature point position information detected by a camera of the unmanned aerial vehicle, comprehensively processes two-dimensional image coordinates and distance data, and calculates three-dimensional coordinates; based on the preliminary positioning result, the three-dimensional coordinates of the target are further optimized through an iterative algorithm; and carrying out Gaussian back calculation on a three-dimensional solution positioning result in the space rectangular coordinate system to a geodetic coordinate system for display.

This utility model relates to the field of sensor calibration technology, specifically to a pressure sensor calibration bench, characterized by: a housing, on which a test connector is mounted, the test connector being connected to a tank inside the housing via a connecting pipe; the tank being connected to a first calibration device and a second calibration device via connecting pipes respectively; a pressurizing device is mounted on one side of the second calibration device, the pressurizing device being connected to the tank; a temperature regulating device is mounted on one side of the tank, the temperature regulating device being connected to the interior of the tank; and a display module is mounted on the housing, the display module being electrically connected to the first calibration device, the second calibration device, and the sensor under test. The purpose of this utility model is to solve the problems of low calibration accuracy, significant susceptibility to ambient temperature, and inconvenient data acquisition and processing in existing pressure sensor calibration processes.

The application discloses a kind of hydraulic unit calibration method, device, equipment and storage medium, applied to oil well logging technical field, comprising: obtaining the thrust generated by target hydraulic unit under preset temperature environment, and the state parameters of target hydraulic unit when generating thrust are used as training data;Training data are input into prediction model to train, and the trained prediction model is obtained;According to the calibration coefficient of target hydraulic unit and temperature correction coefficient determined by prediction model.Through measuring a small amount of training data first, then training prediction model using training data, so that the accurate corresponding relationship between ambient temperature, thrust and each state parameter can be obtained, and finally the target hydraulic unit is calibrated based on the trained prediction model, and the calibration coefficient of hydraulic unit and temperature correction coefficient can be accurately calibrated.

Embodiments of the present disclosure relate to a method, device and storage medium for calibrating a position of an encoder. The method comprises determining a reference zero point and a reference phase corresponding to the reference zero point with respect to A-phase and B-phase signals from the encoder; generating a zero mark matching signal according to valid edges of the A-phase and B-phase signals, a real-time rotation direction of the encoder and a reference rotation direction when the reference zero point is determined during a valid period of the Z-phase signal; and calibrating a position counter with respect to the position of the encoder according to a phase difference between a real-time phase corresponding to the zero mark matching signal with respect to the A-phase and B-phase signals and the reference phase. The present disclosure can calibrate the position of the encoder accurately.

This invention discloses a calibration circuit, a chip including the same, and a calibration method. The calibration circuit according to an embodiment of the invention includes an input terminal for receiving a voltage control signal, wherein the voltage control signal is directly or inversely proportional to an ideal output voltage; a sampling unit connected to the output terminal to sample and obtain a test voltage; a first test voltage being a test output voltage corresponding to a first ideal output voltage, and a second test voltage being a test output voltage corresponding to a second ideal output voltage; an arithmetic unit obtaining a proportional deviation parameter based on the first test voltage, the voltage control signal corresponding to the first test voltage, the second test voltage, the voltage control signal corresponding to the second test voltage, and the directly or inversely proportional relationship; and a proportional adjustment unit adjusting the output voltage signal according to the proportional deviation parameter. The calibration circuit and the chip including the same according to an embodiment of the invention can achieve accurate calibration across the entire adjustment range.

The invention relates to the technical field of big data analysis, in particular to an order matching method based on a knowledge graph. Obtaining order data to be processed, performing multi-modal feature extraction on the order data to obtain order feature data, and mapping in the knowledge graph to generate cargo entity nodes; calling a vehicle model node in the knowledge graph, and executing multi-dimensional matching verification based on the cargo entity node and the vehicle model node, including verifying geometric suitability based on a cargo voxel set and an effective loading voxel module, verifying operation operability based on an operation entry vector and a loading and unloading port vector set, and verifying the operation operability based on the cargo voxel set and the effective loading voxel module. Carrying out transportation suitability analysis based on historical portrait data driving; the vehicles passing the verification are screened to generate a single vehicle scheme; meanwhile, a load decomposition algorithm is executed to disassemble cargo entity nodes into subtasks, a vehicle combination is retrieved, behavior consistency verification is carried out based on historical tracks and speed collaborative entropy, and a multi-vehicle collaborative scheme is generated; and outputting a candidate scheme set including the single-vehicle scheme and the multi-vehicle cooperation scheme.

The invention relates to a vibration calibration method and device of a motor, electronic equipment and a storage medium, and the method comprises the steps: responding to a first designated operation, sending a plurality of driving voltage waveforms to the motor, and controlling the motor to vibrate, the plurality of driving voltage waveforms being voltage waveforms of different frequencies; acquiring a voltage waveform and a current waveform of the motor, and determining an impedance curve of the motor based on the voltage waveform and the current waveform; according to the impedance curve, calibration information is determined, the calibration information is stored, and the calibration information is used for calibrating vibration of the motor. The accuracy of vibration calibration can be improved by determining the calibration information of the motor by using the impedance curve.

The invention relates to the technical field of sensor calibration machines, and provides a net weight type multi-dimensional force sensor automatic calibration machine which comprises a rack, a clamping module is arranged at the top of the rack, a loading rotating ring is arranged at each of four stress positions of the clamping module, and four groups of rotary loading modules are arranged on the periphery of the clamping module. Four groups of series weight modules and linear motion modules are also arranged in the rack, loading ropes are led out of the loading rotating rings, and the loading ropes are connected to the corresponding series weight modules after winding around the rotary loading modules on the same side. The weight modules are connected in series, the problems of null drift, temperature drift, creep deformation and the like existing in a standard sensor in a stacked calibration machine are solved, and the weight modules are designed into structures which are convenient to freely combine and disassemble, so that disassembly, assembly and maintenance are convenient. The device is high in automation degree, simple in equipment operation, accurate in sensor calibration, high in efficiency, capable of carrying out single-dimensional or multi-dimensional loading force calibration according to requirements, wide in application range, simple in sensor multi-dimensional force value calculation and capable of achieving high calibration precision.

The utility model relates to the technical field of chip mounters, in particular to a calibration device for a chip mounter, which mainly comprises a processing table, a conveying assembly and a fixing block fixedly mounted on the top surface of the processing table, an adjusting plate rotatably mounted on the top surface of one end of the fixing block, a chip mounting assembly fixedly mounted on the top surface of the adjusting plate, and a calibration mechanism, the calibration mechanism is arranged above the fixing block and comprises two arc-shaped plates fixedly installed on the side face of the fixing block and a locking mechanism, and the locking mechanism is arranged on one side of the adjusting plate. The handle is rotated to drive the screw rod to rotate, when the screw rod rotates, the second connecting strip is driven to move relative to the screw rod, the adjusting plate and the patch assembly are driven to rotate by a certain angle, the adjusting plate drives the fixing sleeve and the pointer to rotate by a certain angle, and the angle of the pointer pointing to the scale line is adjusted by measuring the inclination of the surface of the product. Therefore, the patch assembly can be calibrated quickly and accurately, the patch assembly is parallel to the surface of a product, and the patch quality is ensured.

The utility model relates to the technical field of ecology research tools, in particular to an ecological quadrat positioning column and a portable ecological quadrat frame. The ecological quadrat positioning column comprises a positioning rod, a positioning seat, a horizontal calibrator, a laser calibrator, a laser calibration point and a plurality of positioning buckles; the positioning seat is connected to the top of the positioning rod; the horizontal calibrator is connected to the top of the positioning seat; the laser calibrator and the laser calibration point are angularly connected to the side surface of the positioning seat around the axis of the positioning seat; the cursor fixed point is used for receiving a laser positioning beam emitted by a laser calibrator of an external adjacent ecological quadrat positioning column; the multiple positioning buckles are connected to the side face of the positioning base and used for being connected with the connecting belt. The ecological quadrat positioning column is applied to a portable ecological quadrat frame, is simple in structure, flexible and convenient to use and wide in application range, can meet different size requirements according to requirements, and can accurately position and calibrate each angular point of the quadrat.

The invention discloses a device, configuration and storage method of a hydrogen standard oil sample for transformer oil chromatography verification, and relates to the technical field of electrical equipment state monitoring and fault diagnosis, the device comprises a standard oil configuration and storage unit, an outer layer protection unit, an inert gas supply and pressure compensation unit, a hydrogen concentration online monitoring unit and a control unit. The standard oil configuration and storage unit is a stainless steel tank body of which the inner wall is plated with a compact silicon oxide coating, so that hydrogen escape is effectively prevented; the outer-layer protection unit covers the inner tank and forms an inert gas interlayer, and the stable pressure difference between the outer-layer protection unit and the inner tank is maintained through dynamic pressure compensation; the hydrogen concentration monitoring probe monitors the hydrogen concentration in oil in real time, and the control unit automatically adjusts the interlayer pressure or the stirring speed according to data and actively maintains dissolution balance. Through the synergistic effect of the high-barrier material, dynamic pressure compensation and intelligent closed-loop control, the technical problems that hydrogen is easy to permeate and the concentration is easy to attenuate are solved, and the method can be used for on-site calibration of the transformer oil chromatography online monitoring device.

The invention discloses a dynamic inspection and calibration system of a constant feeder, which relates to the technical field of metering and calibration and comprises a dust early warning end, an electrostatic early warning end and a dynamic calibration end, the dust early warning end is used for calculating the deviation between the initial weight and the running weight of a conveying belt in real time by monitoring the weight of materials detected at different positions of the constant feeder in the feeding and conveying process in real time; the static early warning end is used for obtaining static abnormity in the material conveying process in time and removing static electricity in time when the static abnormity occurs. The dynamic calibration end is used for checking and judging whether the feeding weight deviates or not in real time, and dynamic checking, calibration and judgment are conducted in real time by combining the discharging amount of different discharging port angles. According to the dynamic inspection and calibration system of the constant feeder, the abnormal metering condition of the constant feeder can be found in time, the static electricity abnormity of material conveying can be judged in real time, and the material weight of the feeder can be accurately inspected in real time according to the actual dynamic change condition.

The application provides a kind of thermal infrared sensor calibration method, device, electronic equipment and storage medium, it is related to sensor calibration technical field, the method comprises: the original image is input into segmentation model, obtains the binary image corresponding to original image of segmentation model output, original image is the thermal infrared image of the calibration board collected by the to-be-calibrated thermal infrared sensor, image reconstruction is carried out on the binary image, obtains the contrast enhancement image corresponding to original image, the visual features of the corner point of the checkerboard pattern in the contrast enhancement image are enhanced, obtain the feature enhancement image corresponding to original image, the corner point of the checkerboard pattern in the feature enhancement image is identified, based on the position information of the identified corner point, the internal and external parameter values of the to-be-calibrated thermal infrared sensor are obtained.The application can more accurately and efficiently realize the calibration of thermal infrared sensor, can improve the robustness of thermal infrared sensor calibration, and can realize the calibration of thermal infrared sensor in complex scene.

This application discloses an MLS channel delay time comparison and calibration method, apparatus, medium, and device. The method includes: measuring the round-trip propagation delay of a signal through bidirectional pulse interaction to complete the preliminary calibration of the relative delay between devices; based on the preliminary calibration, extracting the delay characteristics of the pulse signal within the channel using envelope signal analysis; demodulating the intermediate frequency signal based on the extracted delay characteristics to obtain the propagation delay in pseudocode ranging; introducing delay control based on the demodulation result to evaluate the delay error of the receiving channel and perform dynamic correction; and generating a standard intermediate frequency signal based on the corrected delay error to perform delay calibration of the MLS channel. This application can achieve accurate calibration of the MLS channel delay.

The application provides a parameter calibration method, device and equipment of a ring-shaped camera array and a storage medium. The method comprises the following steps: determining the camera intrinsic parameters corresponding to each camera in the ring-shaped camera array based on the multiple frames of first images of the object to be measured corresponding to different angles collected by each camera; grouping all the cameras in the ring-shaped camera array in sequence to obtain multiple groups of cameras, and determining the initial camera extrinsic parameters corresponding to each group of cameras based on the multiple frames of second images of the object to be measured corresponding to different angles collected by each camera in each group of cameras; wherein each group of cameras comprises multiple cameras, and there are the same cameras in the adjacent two groups of cameras; performing joint optimization processing on the multiple initial camera extrinsic parameters to determine the target camera extrinsic parameters corresponding to the ring-shaped camera array; and determining the joint calibration parameter results corresponding to the ring-shaped camera array according to the camera intrinsic parameters and the target camera extrinsic parameters. The method can accurately calibrate the camera parameters corresponding to the ring-shaped camera array.

The application provides a sensor signal attenuation calibration method, device, equipment and storage medium, and relates to the technical field of computers.The method comprises the following steps: acquiring a real-time detection signal of a target sensor; determining a target feature value corresponding to the real-time detection signal under each first feature dimension in a feature dimension set; the first feature dimension is strongly related to the concentration of a to-be-measured object; inputting the target feature value under each first feature dimension into a concentration estimation model for concentration calibration processing to determine a calibrated concentration corresponding to the to-be-measured object; the concentration estimation model is obtained by pre-training according to multiple sample feature values under the first feature dimension and the concentration of a sample object corresponding to each sample feature value; each sample feature value and the concentration of each sample object are determined according to sample detection signals of sample sensors with different aging degrees under different working conditions. The technical scheme can improve the accuracy of the sensor detection signal.

In a device and a method for calibrating an interior space camera arranged in an interior space of a vehicle, at least one image of an imaging of a region of the interior space is acquired by means of a camera arranged in the interior space of the vehicle and image data corresponding to the image is generated and processed. At least one edge of the vehicle visible in the interior space is detected on the basis of the image data of the camera. In a first step, a roll angle of the camera is determined on the basis of the detected edge. In a second step, a pitch angle and / or a yaw angle of the camera are determined on the basis of the determined roll angle, the image data and CAD data of the interior space of the vehicle.

The present application belongs to the technical field of underwater sound source radiation characteristic measurement, and relates to a method and system for measuring the very low frequency radiation sound power of an omnidirectional sound source in a reverberation tank. The method comprises: determining the first-order resonance frequency according to the structural parameters and water level of the reverberation tank; placing a standard sound source at the center of the tank and arranging multiple hydrophones at intervals on one side of the sound source; exciting the standard sound source to emit sound with a single-frequency continuous sinusoidal signal lower than the first-order resonance frequency, establishing a standard sound pressure field fitting model based on the radiation sound pressure amplitude collected by the hydrophones, and solving the exponential function adjustment factor and the standard sound source intensity factor; replacing the standard sound source with the sound source to be measured, exciting the sound source to emit sound with the same single-frequency continuous sinusoidal signal, establishing a sound pressure field fitting model for the sound source to be measured based on the radiation sound pressure amplitude collected by the hydrophones, and solving the intensity factor of the sound source to be measured; and calculating the radiation sound power of the sound source to be measured. The present application realizes the rapid and accurate acquisition of the very low frequency radiation sound power of the sound source to be measured.

This application relates to the field of analog integrated circuit technology and discloses a system zero-pole calibration method, apparatus, device, storage medium, and computer program product. The method includes: setting the capacitance configuration of the variable capacitor array of each stage integrator in a Sigma-Delta modulator to an initial state; performing oscillation detection on the capacitor configuration after setting to the initial state; when the modulator is in a non-oscillating state, obtaining the current noise power under the current capacitance configuration; comparing the current noise power with the historical minimum noise power under the current capacitance configuration and selecting the minimum value, updating the capacitor configuration corresponding to the minimum value to the optimal capacitor configuration; returning to the step of performing oscillation detection on the capacitor configuration after setting to the initial state until traversing all capacitor configuration combinations, and completing the zero-pole calibration by outputting the optimal configuration among all capacitor configuration combinations, thereby achieving accurate calibration of the modulator's zeros and poles.

The application discloses a kind of intelligent garlic sprout harvesters, it is related to agricultural harvesting machinery technical field, including frame and walking drive mechanism, operation execution mechanism and intelligent sensing and control system installed on frame;The walking drive mechanism includes walking wheel installed on the bottom of frame and driven by motor, realizes self-propelled field operation of whole machine;The operation execution mechanism includes sprout clamping device, needle belt and sprout pulling device sequentially arranged from front to back along the operation direction of frame;The application constructs an intelligent garlic sprout harvesting scheme by machine vision, multi-sensor fusion technology and bionic mechanical structure design, which integrates separating grass, clamping, skinning, pulling and collecting, realizes whole-process automation control from garlic sprout identification, posture righting, skinning loosening, flexible pulling to conveying and collecting, meets the efficient, low-loss, precision harvesting demand in garlic planting scene.

This invention provides a chuck structure with a pin mechanism, belonging to the field of electrode repair technology. It addresses the problems of existing chuck structures that rely on simple positioning bases, making it difficult to adapt to worn and deformed electrodes, easily leading to shaft offset and eccentric clamping, increasing the difficulty of maintaining coaxiality during repair. The chuck includes a chuck body, a drive column, an upper cover, a detector, a drive pin, a pin assembly, and a detection assembly. The drive column is slidably connected inside the chuck body; the upper cover is located at the top of the chuck body; the detector is fixedly connected to the bottom of the upper cover; the drive pin is located at the top of the drive column and slidably connected inside the detector; the pin assembly is located inside the chuck body; and the detection assembly is located inside the detector. This invention offers advantages such as rapid assembly, shaft positioning, and deformation detection.

This invention provides a method for calibrating front-end scattering parameters and a user equipment using the method. The method for calibrating front-end scattering parameters includes the following steps: measuring at least three coupler reflection coefficients under at least three different tuner measurement control words; obtaining multiple tuner scattering parameters corresponding to these tuner measurement control words; and calibrating the front-end scattering parameters based on the at least three coupler reflection coefficients and these tuner scattering parameters. This method utilizes the tuner for calibration, eliminating the need for additional calibration kits and setting the tuner to a low-isolation mode. Therefore, this method enables signal transmission during calibration, allowing front-end calibration to occur simultaneously with the normal operation of the mobile device.