5 results about "Power intensity" patented technology

The present invention discloses a method for checking the received optical power intensity by inverse calculation of common points. The AD value corresponding to each calibrated power point of the RxDDMI of the device under test is first calculated, and the power response relationship obtained in the calibration link is substituted to obtain the reported calculated value of the RxDDMI of each calibrated power point. Finally, during the actual power verification, the device under test DUT performs the calculation of the AD conversion success rate, and then determines whether the deviation between the reported calculated value and the actual power value meets the threshold requirement. The test flow of the present invention is improved in the verification process, and the inverse calculation method is directly used. The main functions of the inverse calculation verification are: verifying the deviation between the fitted power response and the actual power response; there is no need to repeatedly set the Rx power, and the AD value of each calibration point is directly used to calculate the reported power value, and this process is completed by the PC.

The application discloses a cross-water bridge parameter inversion method and system based on generalized compact polarization SAR total power intensity peak value, and belongs to the technical field of synthetic aperture radar remote sensing, and solves the problems of low system efficiency, non-movable discriminator, non-uniform GCP mode discriminators and precision affected by pixel deviation of the prior art. The application obtains or synthesizes a received scattering vector; total power is calculated pixel by pixel based on the received scattering vector, a filter is used for multi-view processing, a smoothed total power map is obtained, the smoothed total power profile in the distance direction is obtained by averaging in the azimuth direction within the azimuth direction interval covered by the determined bridge main span, three local maximum peak values satisfying preset conditions are identified by using a peak value detection method; and the geometric parameters of the bridge are inverted based on the pixel positions of the local maximum peak values and combined with imaging geometric parameter inversion. The application is used for the safety monitoring and quantitative inversion of geometric parameters of cross-sea and cross-river bridge infrastructure.

The present invention discloses a NO2 concentration measurement method based on DOAS, which includes the following steps: S1, obtaining original spectral data of different power intensities for preprocessing; S2, calculating the spectral correction coefficient and verifying it; S3, collecting the transmission spectra of NO2 of different concentrations for processing to obtain NO2 spectral data; S4, calculating the relationship between each spectral point and the concentration, calculating the optimal differential absorbance position data set and the optimal differential absorption cross section; S5, establishing an equation through the differential absorbance of the actually measured gas, the optimal differential absorbance position data set and the optimal differential absorption cross section, and obtaining the NO2 concentration value; S6, using the least squares method to correct the NO2 concentration value. The spectral data is corrected by the exponential spectral correction method to overcome the defects of poor stability and repeatability of the xenon lamp light source, thereby greatly improving the accuracy of the spectral data; improving the NO2 measurement accuracy and meeting the actual application needs.

The application discloses a device and method for detecting the motion of a particle captured in an optical trap. Transmission light is emitted from a transmission light source, and the transmission light is incident on an optical waveguide. The optical trap capturing light and the particle are arranged on the circumferential side of the optical waveguide, the particle is captured by the optical trap capturing light, the transmission light in the optical waveguide is coupled into the particle and then coupled back into the optical waveguide, and finally incident on a power detector. The transmission light, the particle and the waveguide form an acoustic-optic system. The waveguide is fixed, and at this time, the motion of the captured particle will change the relative distance between the two, and then change the transmittance of the transmission light in the waveguide, so as to calculate the motion information of the captured particle, and realize the detection of the motion of the particle captured in the optical trap. The application can greatly reduce the optical path complexity and volume of the particle motion detection module in the optical trap system, reduce the coupling of the motion signals between the axes of the particle, greatly reduce the light power intensity required for detecting the motion of the captured particle, improve the detection efficiency, and has practical application value.

It is proposed a method and device for the realization and reaching the required parameters for a nuclear reaction of light nucleus in liquid. The time for the plasma sustainability is achieved by excitation of long train of high peak intensity ps pulses. The preliminary estimations show a power intensity of 1019 - 1020 W / cm2 ( corresponding for the wavelength of 1064nm is round 5.1011 V / m electric field ). It is observed, that the emission of the D ions at 656nm continues after the end of the excitation and ions recombination life time, which leads to the conclusion that a high energy exothermal reaction is triggered.