122 results about "Radiation response" patented technology

A radiation sensitive resin composition which comprises (A) a polymer which becomes alkali-soluble in the presence of an acid and (B) a radiation sensitive acid generator which generates an acid upon irradiation with a radiation, said polymer (A) comprising two recurring units represented by the general formulas (1) and (2) and a recurring unit which acts to reduce the solubility of the polymer is an alkali developer after the irradiation:wherein R1 represents a hydrogen atom or a methyl group and R2 represents a hydrogen atom or a methyl group. Said composition provides a chemically amplified positive resist which can give a fine pattern with a good pattern shape, and said resist is freed from volume shrinkage, peeling failure and adhesive failure, is excellent in dry etching resistance and effectively reacts with various radiations to give a good pattern shape which is excellent in photolithographic process stability, said pattern shape having no thinned portion at the upper part.

A relative radiation correction method of a staring satellite area array CCD camera is provided. The methods is characterized by, to begin with, establishing a radiation response model of detection elements of the area array CCD camera; then, utilizing the staring satellite area array CCD camera to carry out real-time and fixed-point observation on large-area deep sea far away from the land at the late night without moonlight, determining the amplitude of the noise through the remote sensing images obtained for many times, and carrying out denoising to obtain remote sensing image data without noise; then, in the morning and at dusk, utilizing the staring satellite area array CCD camera to carry out continuous imaging on the large-area deep sea far away from the land under the weak and uniformly-scattered skylight, and calculating relative radiation calibration coefficients through the remote sensing images which are obtained for many times and are denoised; and at last, obtaining a relative radiation correction image of the staring satellite area array CCD camera. The method helps to solve the technical problem of no relative radiation correction method is provided for the staring satellite area array CCD camera in in-orbit operation.

The invention discloses a three-line-array camera image collaborative absolute radiometric calibration and compensation method. The three-line-array camera image collaborative absolute radiometric calibration and compensation method comprises following steps: 1) respective relative radiometric calibration of three-line-ray camera images; 2) calculation of ground target reflectivity; 3) calculation of atmosphere parameters; 4) respective spectral response calculation of the three-line-ray camera; 5) respective entrance pupil radiance calculation of the three-line-array camera; 6) calculation of three-line-array collaborative absolute radiometric calibration coefficients; and 7) absolute radiometric correction based on the three-line-array collaborative absolute radiometric calibration coefficients. According to the three-line-array camera image collaborative absolute radiometric calibration and compensation method, an unified model is constructed based on the radiation response relationship of front sight, fore sight and back sight images of the three-line-array camera, so that actual spectral characteristics of the ground target are reflected by the radiation response of three-line-array imagines, and the foundation for photogrammetric stereoplotting and remote sensing quantitative application is provided.

The invention discloses an imaging simulation method and system for a decimeter-scale satellite-borne TDI CCD stereoscopic mapping camera. Stereoscopic images of a commercial satellite Worldview-3 which has the highest resolution at present as a data source, and a data form of image+ground point is formed through stereoscopic matching processing. To acquire the instant imaging face irradiance of a TDI CCD is regarded as a core step, an orbit, attitude parameters, camera installation parameters, TDI CCD geometric parameters, camera MTF and the like are organically linked up. The multistage dynamic integral simulation of the TDI CCD is achieved through time domain integral and TDI CCD multistage charge accumulation, and then, the strict simulation of radiation response and linear array image imaging of the camera are achieved. According to the method and the system, the disadvantage in the traditional imaging simulation that the difference of geometric and radiation information corresponding to different vision angles in high-resolution satellite stereoscopic imaging is hard to simulate due to the adopting of a single data source can be avoided, and the accuracy of simulating stereoscopic mapping satellite images is improved.

The invention discloses an in-orbit absolute radiation calibration method and system for an optical remote satellite. The method comprises the following steps: acquiring the field information of a calibration field; determining the high-spectrum atmospheric transmittance of the solar path and that of the remote satellite observing path by using a radiation transmission model; determining the entrance pupil radiance reflected by a reflection point source target to the remote satellite according to the high-spectrum atmospheric transmittance and reflection point source parameters of the solar path and the remote satellite observing path; obtaining the radiation response value of the remote satellite to each unit of the reflection point source target; according to the entrance pupil radiancereflected by the reflection point source target to the remote satellite and the radiation response value of the remote satellite to each unit of the reflection point source target, determining the in-orbit absolute radiation calibration coefficient of the optical remote satellite based on the reflection point source by using the calibration equation of the remote satellite and completing the calibration. The in-orbit absolute radiation calibration method and system can realize high-frequency, high-precision, operational and normalized mobile calibration of the high-resolution optical remote satellite in the full dynamic range.

The invention relates to a method for comprehensively evaluating optical remote sensing image quality. The method for comprehensively evaluating the optical remote sensing image quality comprises the following steps that 1) according to theoretical ground resolution and ground object spectral reflectivity characteristics, actual ground resolution GSD<real> is estimated; 2) according to radiation response of ground objects with different spatial frequencies (u and v), an optical modulation transfer function MTF is established; 3) according to the ground object reflectivity characteristics R and the average signal noise ratio SNR<mean>, the SNR (u and v) based on continuous spatial frequencies is solved; 4) optical remote sensing image quality evaluation indexes integrating the ground resolution GSD<real>, the optical MTF and the SNR are established; 5) according to a set threshold value, the evaluation indexes P are adopted for quality evaluation of different optical remote sensing images, wherein the specific processes are that the evaluation indexes P of the different optical remote sensing images are calculated simultaneously at a certain spatial frequency (u and v), if the evaluation indexes P are greater than the set threshold value, the quality of the optical remote sensing images corresponding to the evaluation indexes P is good, and target information extraction and geometric correction are carried out on the optical remote sensing images with the good quality. The method can be widely applied to quality evaluation of the optical remote sensing images.

The invention discloses a method for correcting the nonuniformity of space camera on-orbit radiation response, belongs to the technical field of space camera on-orbit image processing, solves the problems that an ideal effect is difficult to achieve during correction, and the cost is high, and improves the real-time performance of interpretation. The method is characterized in that a two-point calibration correction method is adopted; dark field gray value points and subsaturated gray value points are selected; pixels have the same gray value after images are corrected under the condition that light is uniformly transmitted; the gray value of each pixel is equal to zero basically after the image are corrected under the condition of a dark field; and images are subjected to a minus operation and a multiplication operation sequentially, operation results are subjected to upper limit judgment, and the space camera on-orbit radiation response nonuniformity correction method is implemented. According to the nonuniformity correction method, a function of correcting the nonuniformity of the space camera radiation response is realized by the field programmable gate array (FPGA) software design of a space camera imaging controller; a few restriction is provided for modification of FPGA software, so that the flexibility of implementing correction is improved, and a good correction effect can be obtained; and downlink images can be directly interpreted, so that the real-time performance of space camera image interpretation is improved.

The invention discloses a lily, fruit and vegetable milk. The lily, fruit and vegetable milk is characterized by comprising lily, fruits and vegetables serving as raw materials in percentage by weight: 10 to 20 percent of lily juice, 5 to 10 percent of fruit juice, 3 to 10 percent of vegetable juice, 2 to 8 percent of sugar, 52 to 70 percent of fresh milk and 0.1 to 0.3 percent of composite emulsification stabilizer. The product of the invention has rich and balanced nutrition, has the effects of nourishing the heat, calming the nerves, moistening the liver, clearing away the heart-fire and adjusting qi by taking commonly, can relieve a cough, stop bleeding, promote appetite and calm the nerves, contributes to enhancing physical fitness and inhibiting the growth of tumor cells, and alleviates a radiation response.

The invention belongs to the technical field of natural polymer functional material preparation, and discloses a temperature and pH dual-affected xylan-based hydrogel as well as a manufacturing method and application thereof. The temperature and pH dual-affected xylan-based hydrogel is prepared through the following steps: dissolving xylan by using hot water, so that a xylan solution is obtained; adding N-isopropylacrylamide and acrylamide into the xylan solution, adding a crosslinking agent, feeding nitrogen for bubbling, adding a photoinitiator, uniformly mixing, cooling the obtained mixture to room temperature, putting the obtained mixture into an ultraviolet radiation reactor, carrying out ultraviolet irradiation at room temperature, carrying out closed placement and reaction at room temperature, and after the reaction is completed, washing the obtained product by using deionized water, so that an obtained solid is the temperature and pH dual-affected xylan-based hydrogel. The preparation process and method of the hydrogel disclosed by the invention are easy to operate, and the hydrogel has environmental friendliness; and the obtained temperature and pH dual-affected xylan-based hydrogel has biocompatibility, and has good sustained-release behavior on medications, and the release of medications in a simulated intestinal physiological fluid is up to 80%.

An embodiment generally relates to a wave antenna. The wave antenna includes a grounded substrate and a probe feed configured to be substantially centered within the grounded substrate. The wave antenna also includes a load configured to be a linear distance from the probe feed and a conductor trace configured to connect the probe feed and the load. The pattern for the conductor trace is substantially a spiral and the radiation response of the wave antenna is substantially omni-directional.

The invention discloses a real time on-line test system for MOS chip gamma ray radiation responses. The real time on-line test system is characterized in that: the system comprises a radiation response probe bench (1), a pulse I-V test system, a pulse C-V test system and an On-The-Fly test system. The radiation response probe bench (1) comprises a lead container with a built-in radioactive source (10), a to-be-tested chip (12) and a microscope (13) observing changes of the to-be-tested chip. The lead container has an opening at the upper end. The to-be-tested chip (12) is placed in the opening portion of the lead container. The upper end of the to-be-tested chip (12) is connected with a probe (14). The probe is separately connected with the pulse I-V test system, the pulse C-V test system and the On-The-Fly test system. The system fills a technical gap of real time on-line monitoring for the MOS chip gamma ray radiation responses, and a basis is provided for the development application of radiation-proof integrated circuits and high-K medium radiation responses.

The invention relates to the field of optical infrared radiation calibration, and provides a light adjusting-type infrared radiation calibration method. Through adjusting radiation flux incident to a calibrated device by blackbody radiation, irradiance radiated to the image surface of a calibrated system is changed, blackbodies with two temperatures are used at the same time, or the same blackbody changes temperature for one time, radiation flux incident to the calibrated system is calculated, and an infrared radiation response curve of the calibrated device is drawn. The common mode in which the temperature of the blackbody is adjusted to calibrate the device response curve is changed, the calibration speed is fast, influences such as background, radiation of the calibrated device itself and local output can be effectively removed, and the response curve of the calibrated curve can be drawn more accurately.

A device for sensing, locating, and characterizing a radiation emitting source, including: a detection crystal having dimensions great enough such that regional differences in radiation response are generated in the detection crystal by radiation impinging on one or more surfaces of the detection crystal; and a plurality of detectors one or more of coupled to and disposed on a plurality of surfaces of the detection crystal operable for detecting the regional differences in radiation response generated in the detection crystal by the radiation impinging on the one or more surfaces of the detection crystal.

The present invention provides an image nonuniformity correction method based on a Laplace operator and deconvolution. The method comprises the steps of (1) carrying out convolution processing on an F frame image to be corrected by using the Laplace operator, (2) obtaining the median of a same pixel of the F frame image after convolution, and carrying out pixel-by-pixel calculation to obtain a median matrix, and (3) calculating a correction coefficient matrix b by using a deconvolution algorithm based on the mean value matrix, and correcting the image to be corrected by using the correction coefficient matrix b. Based on the assumption that four adjacent pixels have statistical consistency, the convolution and median taking are carried out on the image to finally calculate the correction coefficient matrix to carry out correction. According to the method, a high frequency component and a low frequency component in nonuniformity noise can be corrected, the storage of a correction coefficient based on a calibration method in advance is not needed, and thus a problem of the drift of detector radiation response with time is solved thoroughly.

Imaging methods, apparatus and systems are provided for using different irradiation frequencies to generate a composite three-dimensional image. One exemplary method for imaging a semiconductor device involves irradiating the semiconductor device with a first frequency of electromagnetic radiation, obtaining a first radiation response from the semiconductor device in response to the first frequency of electromagnetic radiation, irradiating the semiconductor device with a second frequency of electromagnetic radiation, obtaining a second radiation response from the semiconductor device in response to the second frequency of electromagnetic radiation, and generating a composite image of the semiconductor device based at least in part on the first radiation response and the second radiation response.

The invention discloses a multi-field infrared radiation observation device and method. The device includes a case body holing samples; the front of the case body is provided with an infrared observation window; the inside of the case body forms a containing cavity for limiting the samples through a lateral loading device, an axial loading device and a front and rear restraint device, so that thebidirectional loading and three-way restraint of the samples can be realized; the front of the infrared observation window is provided with an infrared thermal imager, and the infrared thermal imagerfaces to the containing cavity; the lateral loading device is provided with acoustic emission probes, a pressure sensor and a displacement sensor; the axial loading device is provided with a fluid channel and water leaking holes; and the front and rear restraint device includes an infrared observation window sealing block, a front side fixing block and a rear side fixing block. The problem that infrared radiation information of the surface of the samples cannot be directly observed in traditional penetration experiments can be solved; simultaneous monitoring of physical quantities such as stress and strain, permeability, acoustic emission and infrared radiation during the loading (unloading) of samples can be realized; and experiment conditions can be provided to research the infrared radiation response mechanism and permeability characterization of damage evolution of mining coal and rock.

The invention discloses a real-time online test system for gamma ray radiation response of a semiconductor device. The system comprises a semiconductor device gamma ray test probe station and a measuring module for providing bias-pulse test; a lead container in which a radiation source is arranged, an automatic taker and four programmable probe arms are installed on the test probe station, wherein one probe is separately installed on the three probe arms, a microscope is installed on the other probe arm, and the three probes are connected with the bias-pulse measuring module respectively. According to the system, high-precision remote sheet setting and needling are performed on the semiconductor device, then the radiation damage of the semiconductor device is tested on line via the programmable measuring module for providing bias-pulse test, bias can be simultaneously applied while the device to be tested is radiated, and the measured data is quickly stored. The system for sheet setting, needling and sheet taking is accurate and efficient, improves the test efficiency and the test precision, and avoids radiation damage and degradation caused by traditional radiation measurement means.

The invention belongs to the technical field of relative radiometric calibration and particularly relates to a TDI scanning imaging system relative radiometric calibration method suitable for multichannel bidirectional output. The method comprises the following steps: recording the maximum radiation brightness, recording brightness data at intervals, calculating multichannel average radiation response data, linearly segmenting collection points, performing two-point relative radiometric calibration for each segment, and recording the head-tail image average gray typical value of each segment, and selecting a corresponding relative radiometric calibration coefficient and other steps. Compared with the prior art, the method solves the problem of relative radiometric calibration of a multichannel TDI scanning imaging system, not only can control the relative radiometric calibration accuracy in a single channel, but also correct the inter-channel relative radiometric calibration precision.

The invention provides a radioactive source emergency detection robot comprising a system control host which is connected with a temperature and speed sensor, a detection system, a robot system, a remote video monitoring system and a radiation measurement and analysis system in a signaling way. The detection system is internally provided with an x / y metering rate measurement component and a nuclide identification and detection component. The x / y metering rate measurement component is composed of a high-sensitivity compound scintillator detector and a GM tube host with energy compensation and can be used for identifying natural radioactivity and artificial radioactivity and has excellent energy response and radiation response performance and can accurately measure dose equivalent and rapidly detect slight increasing of the radiation level. The x / y metering rate measurement component is internally provided with the large-size compound scintillator detector and the GM tube. The nuclide identification and detection component comprises a 3.5 inch NaI(TL) scintillation detector, a built-in nuclide library and a commonly used isotope library.

The invention discloses an SOI (Silicon On Insulator) device for inhibiting current leakage of a back gate due to radiation and a preparation method thereof. The SOI device comprises a semiconductor substrate, an oxygen buried layer, a body region, a gate region, a source region and a drain region, a gate side wall and an LDD (Lightly Doped Drain) region, wherein the thickness of the oxygen buried layer under the body region of the SOI device is below 10nm, and a highly-doped oxygen-buried charge control layer is arranged between the oxygen buried layer under the body area and the substrate. The invention has the advantages that the thickness of the oxygen buried layer under the body region is reduced to be below 10nm, so that the quantity of positive charges trapped into the region is also reduced during radiation; simultaneously electrons in the body region penetrate into the thin oxygen buried layer, the composite probability with the trapped positive charges generated by radiation is increased; and due to the oxygen-buried charge control layer, the influence of the trapped positive charges radiated in the buried oxygen on the potential of the body region is reduced. The radiation response of the SOI device is effectively improved by utilizing the simple preparation method under the premise of no influencing the conventional electrical properties.

The embodiment of the invention discloses a method and device for constructing a radiation field map, and a robot. A processor is used for comparing each frame image in an obtained video image with anunradiated frame image to extract a radiation response signal of each frame image. The radiation source direction and the target dosage rate of a corresponding measuring point are determined according to the radiation response signal of each frame image and a pre-established corresponding relation database of the radiation response signal and the dose rate. The processor is used for performing deep processing on the video image based on a positioning mapping algorithm of the image information to construct the environmental map information. The target dose rate of each measuring point is fusedwith the environmental map information to obtain radiation field map information. Two-way processing of visible light and ionizing radiation information are carried out on the collected video image through the processor, two processing results are fused, and the construction of the radiation field map can be realized. The technical solution is applicable to an unknown radiation field environmentwith uncertain radioactive levels and complicated conditions.

Designs for radiation hardening CMOS devices and integrated circuits using shallow trench isolation (STI) improve total ionizing dose (TID) radiation response by reducing the leakage currents from source to drain associated with corners and sidewalls of trench insulator edges passing under the gate in an NMOS device while maintaining high breakdown voltage. A silicide block pattern is used in combination with pullback of N+ source and drain regions from at least a portion of these edges of the active region. Additional p-type implants along these edges further increase parasitic threshold voltages and enhance radiation hardness. A process for fabricating devices and integrated circuits incorporating these features is also provided. These techniques and processes are applied to exemplary low-voltage NMOS transistors having straight gates and to high-voltage annular-gate devices, as well as to device-to-device isolation in integrated circuits.

The present invention discloses a pixel radiation response calibration method for reliability screening of a linear array detector. In the condition of a plurality of radiations, a detection device is configured to perform multiple measurements to obtain a response amount; the radiation temperature and the environment temperature are recorded; equations set is resolved to obtain a pixel radiation linear impact factor, environment temperature linear impact factor and a constant factor; a pixel radiation response temperature characteristic formula is obtained; and finally the conformity coefficient of the formula is resolved to provide a criterion for the reliability screening of the linear array detector. The detection device comprises a radiation source, an operational amplifier, an AD converter, a controller, a serial port driver and a computer. Without environmental constraint, the pixel radiation response calibration method is simple and effective, the radiation response shifting problem of a linear array detector is solved in the process of the reliability screening, and a method for providing a criterion for the reliability screening of the linear array detector is provided through analysis of the conformity of a calibration formula.

The invention discloses a non-uniform correction method of a remote sensing image. The method comprises the following steps: obtaining a noise function coefficient of each picture element according to a deep sea imaging result and a radiation response model in a continuously variable integration time of a visible light near infrared array CMOS camera; obtaining a non-uniform correction coefficient of each picture element according to imaging results of the visible light near infrared array CMOS camera for a homogeneous source in different integration times and the noise function coefficient; determining the remote sensing image obtained by the visible light near infrared array CMOS camera; and performing denoising and non-uniform correction on the remote sensing image obtained by the visible light near infrared array CMOS camera according to the noise function coefficient and the non-uniform correction coefficient to obtain a remote sensing image of non-uniform correction of the visible light near infrared array CMOS camera. By adoption of the non-uniform correction method disclosed by the invention, the non-uniform correction of the visible light near infrared array CMOS camera with variable integration time is realized, and the problem of data distortion of the remote sensing image is overcome.

The invention discloses a calibration data processing method for a light field spectral imaging spectrometer. The method comprises: S1: providing a monochromatic uniform surface light source, and illuminating the light field imaging spectrometer with the monochromatic uniform surface light source; S2, acquiring the calibration data of the light field imaging spectrometer in the light passing windows of respective optical filters, and calculating a spectral band response matrix according to the calibration data; S3, determining a radiation response proportional coefficient, and obtaining an actual aliasing matrix according to the radiation response proportional coefficient and the spectral band response matrix; and S4, extracting the spectral data of a selected scene, and reconstructing a cube according to the spectral data of the selected scene. The method has the following advantages of improving the calibration accuracy of the response matrix, solving the inconsistency of the radiation, and obtaining the target complete data cube by one exposure.

Determining electromagnetic response of sample structure having predetermined bulk permittivity and permeability, to electron and radiation pulses, includes calculating electron pulse response of sample structure to electron pulse excitation, using finite-difference time-domain method. Electron pulse excitation is represented by non-singular current source driven by relativistic moving non-Coulombian electron charges, electron pulse response is calculated based on interaction of electron pulse excitation with electromagnetic modes of sample structure at laboratory frame, and electron pulse response depends on bulk permittivity and permeability of sample structure, calculating radiation response of sample structure to electromagnetic radiation excitation, using finite-difference time-domain method. Radiation response depends on bulk permittivity and permeability of sample structure, and providing electromagnetic response of sample structure by superimposing electron pulse response and radiation response. Electromagnetic response comprises electron-energy-loss spectra and / or experienced phase of electron wave functions after interacting with photons of electromagnetic radiation excitation. Method and measuring apparatus are also described.

The invention provides a robot detection system for radioactive source emergency detection, which includes an x\y metering rate measurement component and a nuclide identification detection component; the x\y metering rate measurement component consists of a highly sensitive composite scintillator detector and a GM with energy compensation It is composed of tube mainframe, which can be used to distinguish natural radioactivity and artificial radioactivity. It has excellent energy response and radiation response performance, can accurately measure dose equivalent, and can quickly detect slight increases in radiation levels; x\y metering rate measurement components are equipped with a large volume inside Composite scintillator detector and GM tube; x\y dose rate measurement component adopts multi-threshold technology, which can distinguish natural radioactivity and artificial radioactivity; x\y dose rate measurement component has automatic switching function between high and low ranges; and dose and dose rate alarm threshold Continuously adjustable; the energy range of x\y metering rate measurement components is 0keV~7MeV, the measurement range is 1nSv / h~1Sv / h, and the detection sensitivity is greater than 2000cps / μSv / .

The invention relates to a SPICE (Simulation Program for Integrated Circuit Emphasis) macro model molding method for SOIMOS (Silicon on Insulator Metal Oxide Semiconductor) transistor dose rate radiation. The method mainly comprises the following steps: coupling radiation response features of a device under different conditions to an original SPICE model under a non-radiation condition of the device through a macro model technology specific to a dose rate radiation effect of an SOI MOS device in order to form a basic device unit model including radiation responses; and predicting a radiation response feature of a whole integrated circuit by direct calling of the unit model and system simulation. Through adoption of the method, functions and performance of the designed integrated circuit under specific radiation conditions can be effectively simulated; a reference basis is provided for an anti-radiation SoC (System on Chip) design; the tape-out times are reduced; the cost is lowered greatly; the development period is accelerated; and the efficiency is increased.

The invention provides a method for correcting radiation calibration data of a long-wave infrared camera, comprising the following steps of: imaging the temperature change black body at different temperatures by the long-wave infrared camera, and acquiring a radiation calibration data 1; acquiring the main source of stray radiation in the long-wave infrared camera through stray light analysis; imaging the temperature change black body at a certain fixed temperature by the long-wave infrared camera, and acquiring a imaging data 2; changing the temperature of each of stray radiation sources in the long-wave infrared camera, and acquiring the imaging data 3 separately; processing the imaging data 2 to obtain the correction relationship delta DNd between the focal plane temperature change of the long-wave infrared camera detector and the imaging data 2; processing the imaging data 3 to obtain the correction relationship delta DNs between the equivalent main body temperature of the long-wave infrared camera and the imaging data 3; and correcting the radiation calibration data 1 by using the correction relation delta DNd and the delta DNs. According to the method for correcting the radiation calibration data of a long-wave infrared camera, the radiation response linearity of the long-wave infrared camera is improved, the identification capability to targets with different temperatures is greatly improved, and a foundation is laid for accurate quantitative inversion work.