116results about How to "Troubleshoot calibration issues" patented technology

The invention provides a high-resolution optical push-broom satellite steady-state reimaging sensor calibration method and system; the calibration method includes the steps of building a single TDI CCD unsteady-state strict geometric model and a virtual CCD steady-state imaging strict geometric model, acquiring a rational function model according to the virtual CCD steady-state imaging strict geometric model, establishing a one-to-one mapping relationship between single TDI CCD images and virtual CCD reimaged images, and generating an image after the sensor is calibrated according to the original single TDI CCD images. According to the calibration method and system, the virtual CCD imaging principle is combined, the positioning consistency of a multiple TDI CCD unsteady-state geometric model and a virtual single-line-array CCD steady-state geometric model is utilized, image distortion caused by platform tremble is calibrated while seamless splicing of multiple CCD images is realized, standard scenery images and corresponding high-precision RPC parameters are provided for users, and subsequent image application is facilitated.

The invention discloses a correction method and a device of a time division duplex intelligent antenna system, the method comprises that: the initialization of a channel is carried out; the channel correction of the system is started, the correction of a power detection channel and a detection receiving channel is carried out according to the gains of the power detection channel and the detection receiving channel which are obtained under the current working point and the temperature; the gain calibration and the amplitude-phase consistency calibration of an uplink channel are carried out simultaneously at the protection time slot according to the real-time obtained gain of the detection receiving channel and a gain inequality of the detection channel and the detection receiving channel; the gain calibration and the amplitude-phase consistency calibration of a down transmit channel are carried out simultaneously at the downlink pilot time slot according to the obtained target weight value of the downlink transmit channel and the ganged gain regulating quantity of the downlink transmit channel. The invention can effectively solve the key correction problem in the intelligent antenna system, realize the corrections of the gain accuracy and the amplitude-phase consistency errors of the array channel, simplify the algorithm and have the high correction precision.

The invention belongs to the fields of micro-nano mechanics and precision machinery, and in particular relates to a uniaxial two-way micro mechanical measurement device and method for a scanning micro environment. According to the device, symmetrical coordinate type three-dimensional coarse-tuning translation stages, symmetrical fine-tuning three-dimensional moving precision platforms and a sample platform are installed on a main support unit. Through the control operation of a control system and a manipulation unit, the device can be used for detecting micro-nano characteristic scale materials and a structural mechanical property, and can realize one-way centering stretch, compressing, bending and vibration measurement and micro-nano scale sample surface deformation and micro-structural evolution detection. The device can be repeatedly used and can combine a digital image/speckle correlation technique, an image processing technique or a micro-labeling technique to detect the in-situ deformation and mechanical property of samples in a high-spatial-discrimination scanning microscopic environment.

The invention relates to an inertia/underwater sound combined navigation method based on multiple underwater transponders. The inertia/underwater sound combined navigation method is characterized by comprising the following steps: arranging underwater transponders, and marking the positions of the underwater transponders; calculating absolute location information of an AUV by virtue of a distance conversion location algorithm; performing a location combined navigation algorithm to correct a dead reckoning error by virtue of an inertia navigation system INS/DVL in the AUV and the obtained AUV absolute location information; arranging a subsequent underwater transponder, estimating the location of the subsequent underwater transponder by using the combination output of a distance between the AUV and the current underwater transponder, then performing the distance combination navigation by virtue of the AUV and the subsequent underwater transponder, and repeating the steps. By adopting the inertia/underwater sound combined navigation method, the information advantages of the inertia navigation and the underwater sound navigation can be sufficiently combined; meanwhile, in consideration of an actual background of the underwater application, a series of underwater transponders are successively distributed on a navigation route of the AUV, the problem of calibration of the underwater AUV navigation device is solved only by using the sound distance information, and the application prospect is wide.

The invention relates to the field of distance imaging and three-dimensional imaging technology, in particular to a three-dimensional measurement chip based on a double-array image sensor. The three-dimensional measurement chip comprises two optical lenses, two CMOS (complementary metal oxide semiconductor) image sensor arrays and an image sensor control and processing circuit, wherein the two CMOS image sensor arrays and the image sensor control and processing circuit are made on the same semiconductor substrate; the optical lenses are wafer-level optical lenses which are arranged on the two CMOS image sensor arrays respectively; one of the two optical lenses is provided with an infrared filter or film and used for obtaining a common two-dimensional color image, and the other optical lens is used for obtaining a range image; and the image sensor control and processing circuit establishes a three-dimensional image according to the image information obtained by the two CMOS image sensor arrays. The invention also provides a three-dimensional measurement system based on the chip. According to the invention, the size of the measurement chip and the system can be effectively reduced, and the real-time property and accuracy of the measurement are improved.

The invention discloses a method for estimating and correcting delay inequality between reception channels of a broadband multi-antenna communication system. The method comprises the following steps of estimating the delay inequality between the reception channels through testing and calibration signals; compensating delay inequality of integer sampling periods by designing a delaying module; and compensating delay inequality of time shorter than a sampling period by using an FIR (finite impulse response) filter to realize delay alignment of the channels. The order of the FIR filter is low, the number of occupied resources is small, and the design complexity is low. By the method, arraying channels of broadband signals can be corrected effectively.

The invention discloses a solar cell manufacturing method which comprises the following steps: forming an N+ type doping layer on the surface of an N type substrate; forming a thin film with a pattern on the surface of the N+ type doping layer; etching an open area till a groove is formed in the N type substrate, wherein the etching depth is more than the thickness of the N+ type doping layer; forming a P+ type doping area in the surface of the groove, wherein the P+ type doping area is not in mutual contact with the non-etched N+ type doping layer; removing the thin film to obtain a doped chip; forming a coating on the back face of the doped chip; forming a second passivation layer on the surface of the doped chip; forming a positive electrode and a negative electrode on the surface of the doped chip; and sintering the doped chip so that metal elements of the positive electrode and the negative electrode as well as the doped chip are subjected to eutectic compounding. The invention further discloses a solar cell. The manufacturing method disclosed by the invention has the advantages that the process steps are simplified, a photoetching machine does not need to be purchased, a plurality of mask plates do not need to be used, a mask plate calibration problem is avoided and the manufacturing cost is reduced.

The invention discloses a multifunctional pressure calibration device. The device comprises an upper computer, an electric pressure source, a pneumatic pressure controller, a PLC switch controller, agas-liquid isolator filter, a sealing cylinder, an electromagnetic shut-off valve, a filter, a detected meter interface, an electrical signal connection terminal, a multimeter, a direct-current powersupply, a hydraulic controller, an aviation oil sealing cylinder, an air pressure test stop valve, and a pneumatic spare part meter interface. All parts are connected by pressure pipelines and communication lines; the upper computer carries out system controlling; the electric pressure source generates the gas pressure needed by the system; the pneumatic pressure controller carries out low-range controlling and the hydraulic controller carries out high-pressure supplementing adjusting controlling; the gas pressure drives the sealing cylinder by the gas-liquid isolator filter, to carry out pressurizing on the detected meter interface; and the direct-current power supply provides an excitation power source for a detected pressure and the multimeter is used for carrying out outputting collection. According to the invention, the multifunctional pressure calibration device having advantages of simple operation and low cost is easy to implement and is capable of carrying out multi-medium, multi-range, multi-channel full-automatic calibration on different pressure testing devices.

The invention provides a high-precision swinging friction coefficient measuring apparatus; a swinging rod is mounted on swinging axle of a bracket; a rotor is mounted on the end of the swinging rod; a friction film is provided at the bottom of the rotor; a friction test block is arranged at the vertical lower portion of the swinging axle; the apparatus is characterized in that: a, angle encoder coupled with the swinging axle is disposed at the position of the swinging axle; a force sensor is provided at the lower portion of the friction test block; the measuring data of the angle encoder and the force sensor are transmitted to the data collecting and processing device. The device of the invention utilizes the signals of the force sensor and the angle encoder to measure and calibrate the friction coefficient of the friction test block, which can solve the measurement tracing problem of the friction coefficient and has advantages of simple structure, high accuracy and good stability, etc.

The invention discloses a Venturi nozzle air flow calibration method for an overall test of an aero-engine. Critical flow Venturi nozzle set calibration devices are installed in a high-altitude platform air inlet pressure stabilizing chamber in a parallel connection mode, nozzle sets are composed of multiple Venturi nozzle with the equal throat area, clapboards are uniformly embedded in the circumferential direction, and the number of the nozzles is determined according to the gas supply source capability of a high-altitude platform and throttling characteristics of the main tested engine; anoverall calibration device is connected with the pressure stabilizing chamber through a flange structure, the calibration device is provided with rectification grids front and back, and air flow testlayout is conducted according to the standard requirement of each critical flow Venturi nozzle; under a given pressure condition, according to the size of actual calibration air flow, a remote controlmode is adopted for adjusting the number of opened and closed nozzles, and during adjustment, the nozzles are put to the periphery at first and then put to the middle; the same calibration air flow is calibrated through two modes of adjusting the number of the nozzles and the upstream-and-downstream pressure ratio of the nozzles, and the standard air flow of each calibration point is the sum of measured air flow of the opened nozzles.

The embodiment of the invention provides an inter-RRU united channel correcting method and device. According to the method, external correction type or internal correction type inter-RRU united channel correction is conducted by means of a leaky cable, the ratios of the values obtained after the transmitting correction coefficients of transmission channels of different RRUs are multiplied by the corresponding channel responses of the transmission channels to the values obtained after the receiving correction coefficients of receiving channels of different RRUs are multiplied by the corresponding channel responses of the receiving channels are made identical, correction of channels among multiple cells is realized, and the requirement of JT for channel reciprocity are met.

The invention belongs to the field of sensor calibration, and in particular relates to an angle displacement sensor automatic calibration system and method. The system comprises an angle displacementcontrol module, N angle displacement sensor excitation input modules, an electrical signal acquisition module and a calibration module, wherein N is a natural number greater than or equal to 1. The angle displacement control module is used to fix a calibrated angle displacement sensor and control the calibrated angle displacement sensor to rotate. The output end of the angle displacement sensor excitation input module is connected with the excitation input end of the calibrated angle displacement sensor. The excitation output end of the calibrated angle displacement sensor is connected with the input end of the electrical signal acquisition module. The angle displacement control module, the angle displacement sensor excitation input module and the electrical signal acquisition module are all connected with the calibration module. The problems of low automatic angle displacement sensor calibration efficiency, easy error and low versatility in the prior art are solved.

The invention relates to an underground water organic pollution source inversion method based on a hyper-heuristic-homotopy algorithm, and the method comprises the following steps: building an underground water organic pollution multiphase flow migration numerical model according to observation data, and determining to-be-inverted pollution source characteristics, aquifer parameters and the value range of each variable in the model; preparing a training sample set; training a single machine learning substitution model of the multiphase flow numerical model; establishing a combined intelligent substitution model; establishing a non-linear programming optimization model for pollution source characteristic and aquifer parameter inversion identification, and coupling the integrated learning intelligent substitution model into the non-linear programming optimization model; solving the optimization model by using a hyper-heuristic homotopy algorithm, and carrying out inversion identification on a to-be-solved pollution source characteristic value and a to-be-solved aquifer parameter value; according to the method, the problem of underground water organic pollution source and multiphase flow migration parameter inversion can be solved, and a technical guarantee is provided for accurate simulation and prediction of spatial and temporal distribution of organic pollutants in underground water.

The invention discloses an infrared focal plane array signal simulator which comprises a panel button control circuit, a main control machine, a CPCI (compact peripheral component interface) bus interface circuit, a DPLL (digital phase locked loop) clock generation and programmable clock distribution circuit, a memory management circuit, a synchronous signal generation circuit, a programmable synchronous delay circuit, a DAC (digital-to-analog converter) control circuit and a low-voltage-difference high-steady-state power supply circuit, wherein the panel button control circuit is connected with the main control machine; the main control machine is connected with the CPCI bus interface circuit through a CPCI bus; the CPCI bus interface circuit is respectively connected to the DPLL clock generation and programmable clock distribution circuit, the memory management circuit, the synchronous signal generation circuit, the programmable synchronous delay circuit, a direct-current and alternating-current DAC control circuit through an internal bus, and the synchronous signal generation circuit, the programmable synchronous delay circuit and the DAC control circuit are also connected to the low-voltage-difference high-steady-state power supply circuit through the internal bus. The infrared focal plane array signal simulator provided by the invention can simulate a simulation source output by an infrared focal plane device signal according to the electric signal output characteristics of an infrared focal plane array device, thus the qualitative inspection and quantitative calibration of a data collection system can be realized.

The invention relates to a microcosmic urban traffic online simulation system and a microcosmic urban traffic online simulation method. According to the invention, pre-training is carried out; the relationship between the simulation flow parameter and the road section speed is learned by adopting a meta-learning method; a simulation flow parameter calibration value can be obtained by only using small sample real speed data to adjust parameters of the trained basic model, so that online simulation is realized, the basic model has the advantages of few sample requirements, good generalization performance and the like; the problem that a conventional traffic simulation model cannot perform flow parameter calibration by using small samples is solved; in order to realize an optimal model on thebasis of short time, a double-layer distributed structure is adopted, and distributed structures are adopted in a distributed model parameter learning module and a distributed simulation module, so that the time spent on calculation is greatly reduced, and guidance can be provided for real-time traffic analysis requirements.

The invention discloses a combined multi-antenna calibration device for group delay and nonlinear distortion. The device comprises a plurality of antenna calibration channels, a multi-antenna couplerand a digital processor. The antenna calibration channel comprises an antenna, an intermediate frequency filter DAC, an RF channel, a power amplifier PA and an antenna filter which are connected in sequence. The output ends of the antenna filters of the plurality of antenna calibration channels are connected to the input ends of the multi-antenna coupler. The output end of the multi-antenna coupler is connected to the digital processor through the calibration receiving channel and the analog-to-digital converter ADC in sequence. The digital processor is used for calculating and updating multi-antenna calibration coefficients. According to the invention, the problem of multi-antenna calibration is solved, the problems of group delay distortion of a transmitting channel analog filter and nonlinear distortion of a power amplifier can be solved. The two kinds of distortion can be simultaneously solved through one algorithm device.

The invention particularly relates to a water quality mathematical model optimization method based on big data and parallel computation. The water quality mathematical model optimization method includes carrying out packet processing on massive data needed for the model operation, optimizing the calibration and operation process of a traditional water quality mathematical model by a parallel calculation method, and carrying out dynamic integration and evaluation on data of the calculation results, thus improving the quality of the water quality mathematical model, the computing efficiency andthe precision of computing results. The water quality mathematical model optimization method based on big data and parallel computation solves the problems of model calibration and calibration causedby insufficient measured data and the long processing time of super big file water quality data, can carry out grouping and high-efficiency processing on enough hydrological data, also realizes calibration and correction of the water quality mathematical model, solves the difficulty of super-big file processing and low efficiency, and improves the calculation efficiency of water quality mathematical model.

The invention relates to a thermal conduction model calibrating method based on double-deck nesting uncertainty propagation. The uncertainty optimization problem that when cognition uncertainty and inherent uncertainty exist in thermal conduction model input parameters at the same time, random variables exist in a target function is solved. The method includes the steps of firstly, obtaining the probability distribution function of an inherent uncertainty parameter A and the section of a cognition uncertainty parameter; secondly, generating a cognition uncertainty parameter sample ep; thirdly, generating an inherent uncertainty parameter sample a={aq/q=1,2,3...,n}; fourthly, generating model output data ysq(x/aq,ep); fifthly, calculating the consistency of the final model output data ys(x,A/ep) and reference data yr; sixthly, outputting the cognition uncertainty parameter ep as the calibration result. The method is applied to the field of thermal conduction models.

The invention discloses a quick-assembly calibration-free laser transmitter for gun shooting training. The quick-assembly calibration-free laser transmitter comprises a laser transmitter body and a clamp. The laser transmitter body is installed on a gun barrel through the clamp and comprises a shell. A laser transmitting device, a circuit board and a control and communication module are arranged in the shell. The laser transmitting device comprises a laser light source, a transmitting lens and a two-dimensional adjusting mechanism. A laser transmitting window is formed in the shell. A main clamping plate is fixedly installed below the shell. A movable clamping plate is installed on the main clamping plate. The lower end of the main clamping plate is connected with the lower end of the movable clamping plate through a lock screw. The invention further discloses a using method of the quick-assembly calibration-free laser transmitter for gun shooting training. The quick-assembly calibration-free laser transmitter for gun shooting training is simple in structure and convenient to use, and has the install-and-play function. When the quick-assembly calibration-free laser transmitter for gun shooting training is actually used, aimed shooting at a target is conducted through a front sight, lasers will be correspondingly emitted to an actual bullet point, and the problem of calibration of a laser optical axis during live confrontation training is effectively solved.

The invention belongs to the technical field of radioanalysis, and discloses an on-line uranium plutonium measurement device in a bench test 1AP. The device comprises an X-ray tube (2), a detector (1), an X-ray fluorescence analytical spectrometer (9), a power supply (8) and a measurement tube (6), and is characterized in that the detector (1) and the X-ray tube (2) are sealed in a stainless steel box body (7); incident light rays of the X-ray tube (2) irradiate a sample and an inner label (5) through a primary window (3) on the stainless steel box body (7); emergent light rays of the sample and the internal label (5) are received by the detector (1) through a secondary window (4) on the stainless steel box body (7); and the internal label (5) used by the device serves as a metal of which the X ray has energy being between 10 and 15keV. The device can simultaneously measure the concentration of uranium plutonium in the bench test in an online manner.

The invention provides a projection correction method and system based on structured light, and the method comprises the steps: enabling a structured light projection camera to project the structuredlight to a front region, and obtaining pixel data information of a projection region and a to-be-corrected image region in the front region; obtaining position coordinate information of a projection area and coordinate information of key points in a to-be-corrected image according to the pixel data information; according to the position coordinate information of the projection area and the key point coordinate information of the image to be corrected, establishing a corresponding relation between the plane of the image to be corrected and the plane where the projection area is located; and carrying out perspective transformation on the to-be-corrected image according to the corresponding relationship to obtain a corrected projection image. According to the projection correction method andsystem provided by the invention, a non-contact image correction scheme is provided, correction can be completed only by photographing the corrected image through the camera, and thus the problem of image correction can be solved more flexibly and efficiently.

The invention discloses a double-detector X-ray fluorescence logging probe tube and a method. The double-detector X-ray fluorescence logging probe tube mainly comprises a probing window and a probe-motivating system. The probing window comprises a light pipe collimator, a D1 collimator, a D2 collimator, a berylium window, a light pipe S, a detector D1 and a detector D2. The probe-motivating system is formed by the light pipe S, the detector D1 and the detector D2; the light pipe S is connected with a work power supply; the detector D1 and the detector D2 are sequentially connected with an amplifier, a digitalized multichannel impulse amplitude analyzer, a two-channel data acquisition and controller, an interface circuit, and a ground work station independently. The method helps to solve the problem of well fluid correction when an X-ray tube is utilized to stimulate X-ray fluorescence logging, and thus the radiation security of the X-ray fluorescence logging probe tube is improved.