A data gluing method of quadratic polynomial fitting for lidar signal detection is proposed referring to the small gluing region and singular points. The data gluing region is extended to fully take the non-linear relationship bet

A Non-Kolmogorov turbulence simulation experiment was carried out in the laboratory, based on the liquid crystal spatial light modulator. The probability density distribution, the scintillation index and the temporal powerspectrum

In this paper, the ground-based inverse synthetic aperture lidar for geosynchronous orbit objects imaging is analyzed. The motion characteristics and observation geometric of geosynchronous orbit objects are discussed and the syst

In view of the complicated structure and high cost of the ever reported fiber-optic Fabry-Perot (F-P) sensing demodulator, a new demodulation scheme based on optical correlation is presented in this paper. A glass wafer is used as

Based on the concept of effective refractive index and the power density distribution of cladding mode, this paper re-survey the phenomenon of "mode conversion" of long-period fiber grating (LPFG), and gives new physical image for

A new similarity demodulation method in fiber optic sensing system based on a frequency-swept laser and a Mach-Zehnder interference structure is proposed and demonstrated. The method is designed specifically to overcome the diffic

Since the number of switching hops are severely restricted by the insertion loss of optical switches in an optical packet switching network. A two-cascaded optical gain switch based on four-wave mixing nonlinear effects in semicon

The traditional sparse representation classification methods only exploit the sparse property while they ignore the neighborhood similarity information in hyperspectral image. To address this problem, a novel sparsity-neighborhood

Considering the traditional image fusion methods easily reduce the contrast and sharpness of image, blur edge and loss details, a fusion method of infrared and visible images is proposed based on intuitionistic fuzzy set and regio

In order to enhance the imaging quality of tomographic 3D display technique, the original light field was firstly reconstructed with acrylic panels and films before exerting adjustments. The freedom for adjusting display quality w

The fog image is divided into non-sky area and sky area. For the non-sky area, a method of optimization of dark channel prior thought, namely the opening dark channel algorithm, is presented. For the sky area, an improved boundary

Based on the principles of off-axis interferometry and common-path geometry, a laser diffraction phase microscopy system is designed and built up, and the spatial noise standard deviation of the system without sample is measured a

To solve the real-time imaging distortion correction problem of industrial wide-field objective lens, a correction algorithm and CPU+GPU parallel acceleration scheme was proposed. Firstly, a distortion correction model of aspheric

To reduce the random drift of a laser Doppler velocimeter effectively and improve its measurement accuracy, a metabolic double time series model based on the traditional time series model is put forward for filtering drift data of

To estimate a relative pose for uncalibrated cameras with unknown distortion in multi-view 3D reconstruction, a robust method with high precision was proposed. Based on the epipolar geometry relationship, the radial fundamental ma

According to the spatial posture characteristics of the urban road boundary, the method of automatically extracting road boundary point cloud and drawing road boundary lines was set up. Firstly, the spatial storage structure of th

An on-orbit vicarious calibration experiment for FY-4A was formally performed at Dunhuang Radiometric Calibration Site in late April, 2017. In order to meet the needs of the directional corrections in the sensor viewing angle of s

A stitching algorithm based on orthonormal polynomials in a sparse subsperture area was proposed. In this algorithm, Gram-Schimdt orthogonalization of circular Zernike polynomials is performed by using Mathematica9.0, and the stan

A ″sandwich″ structure based on copper-diamond is proposed, the thermal stress and Smile of the proposed structure and traditional Cu+CuW hard-solder packaged laser are studied by finite element analysis. Comparison of simulation

The temperature perturbation being considered, the transmission matrixes of the reflected and refracted light beams on the prism surfaces have been modified. According to the self-consistent theory of the laser ring cavity, a phys

The effects of linearly polarized and circularly polarized femtosecond laser on the ablation threshold of ZrO2 and Al2O3 ceramics at different pulse numbers were investigated. The surface morphology of the ablated craters was anal

Er3+/Tm3+ codoped lead-free bismuth silicate glasses were successfully prepared by conventional melt-quenching method. The energy transfer mechanism and energy transfer efficiency between Er3+ and Tm3+ ions were investigated throu

A metamaterial Magneticinductive Lens (MIL) with negative permeability was designed to improve the Signal-to-Noise Ratio (SNR) for ultra-high field Magnetic Resonance Imaging (MRI). The proposed MIL, fabricated on a FR-4 substrate

The metal ions Li+, Na+ and Al3+ co-doped BaF2∶Eu3+ phosphors were synthesized by the high temperature solid state reaction. The microstructure, morphologies and luminescent properties were characterized by X-ray diffraction, scan

The dispersion-nonlinearity-managed of different types of nonlinear localized waves was studied in an inhomogeneous erbium-doped fiber system, which is described by the coupled generalized inhomogeneous nonlinear Schdinger-Maxwel

A tunable continuous-wave(CW) internal cavity pump optical parametric oscillator(OPO) based on multi poled period MgO∶PPLN was reported. The 3.2~4.1 μm wide tuning mid-infrared parametric light was obtained in real time by changin

The photodetector based on Graphene/TiO2 heterostructure is fabricated on the substrate of Si wafer, which takes advantage of the light absorption and surface passivation of TiO2 film. The intrinsic photo-response of the photodete

The opt-mechanical design of a Spectrally-Continuous Radiometer (SCR) for surface reflectance automation observation was described. Operating in 400~2 400 nm, the SCR can automatically measure the surface reflectance of radiometri

Although the traditional fluorescence spectroscopy method can be used to evaluate the physiological status of plants, there are some measured defects, such as weak anti-jamming, large amount of data in plant remote sensing detecti

To explain the mechanism of ionization of the α-pinene (C10H16), the VUV dissociative photoionization of C10H16 in an energy region of 7.9~15.5 eV has been investigated with a mass-spectrometer method photoionization mass spectros