Spatio-temporal evolution of optical turbulence is important for site-testing and optimizing the performance of adaptive optical systems. Measurements were taken over three years using surface layer atmospheric parameter system an

The absorption of atmospheric aerosol particle affects earth′s radiation balance and laser transmission in atmosphere, especially high energy laser. The precise measurement of aerosol light absorption is paid more and more attenti

The coherent coupling of two spatial solitons propagating along the same line in biased two-photon photorefractive crystals with both the linear and quadratic electro-optic effects was investigated. It was proved that coherently c

An X-ray detecting system based on square polycapillary X-ray lens was designed, which had a very small X-ray collection angle. The square polycapillary X-ray lens is an X-ray control device based on total X-ray reflection. The X-

For the flexible requirement to the photoelectric instrument, the vehicle platform is needed to load the transmitting light path and receiving light path, often including several lasers and many mirrors. There have been some metho

A squeezed high birefringence Photonic Crystal Fiber (PCF) with high negative flattened dispersion characteristics was proposed. In order to obtain the high birefringence characteristics, the cladding of PCF was made of squeezed t

An advanced avalanche photodiode(APD) was put forword which was integrated by the Si Separate Absorption, Charge, Multiplication(SACM) and Ge SACM APDs. This advanced APD has enlarged the detected wavelength range to 200-1 400 nm.

The core of the satellite characteristics inversion based on mixed satellite spectra is the mathematical model and inversion algorithm. Theoretical model of spectral mixing was built with experiments conducted to justify the model

The characteristics of wheat protein content has high heritability, so fine-quality breeding can be achieved by selecting the high-protein wheat seed. Combined with chemometric methods′ hyperspectral imaging technique was used to

In order to obtain the effect of supporting structures on the surface error of theodolite primary mirror, the topology optimization and parameter analysis of axial supporting structures of primary mirror were performed. First, con

Compound-axis servo system is effective on the improvement of tracking stability and precision for optical beam pointing system. Its entitative simulation models were categorized into scene model, target imaging model, prediction

3D modeling and visualization of the slope body is an essential prerequisite for objective evaluation of open-pit slop stability. Taking an open-pit slope where a small scale landslide happened as the study object, open-pit slope

In order to improve the positioning accuracy of traditional terrain matching algorithm, a new aircraft terrain matching algorithm based on particle swarm optimization was put forward. The search scope of true location was programm

After tens of years development, photo-electronic imaging during day and night has entered the practical stage, and playes an important role in military, aerospace, astronomy, etc. In order to realize the photo-electronic imaging

Vignetting effect during infrared imaging is the phenomenon that image plane center region is bright but edge is dark. The vignetting effect is very serious, so it is necessary to correct the vignetting effect when the system is u

The radiation simulation system for IR acquisition and tracking device were introduced based on the DMD dynamic infrared scene projector. The optical principle of the DMD projector was introduced. The requirements and methods of t

A method of modeling infrared radiance based on RBF neural network was built, then the target spectral emissivity was estimated. When measuring the infrared radiation characteristics of the target surface in the 3-14 μm band by FT

Infrared decoy is a common infrared countermeasures weapon, which has a significant jamming effect on infrared-guided weapons. Among many kinds of infrared decoys, the method of releasing some composition to generate a jamming rad

Near-infrared photons propagate in the mixed solution of intralipid and glucose and form diffuse reflection. In steady state, the scattered photons at the detection spot include ballistic photons, quasi-ballistic photons, and scat

Fog is an inevitable weather factor affecting the performance of free space optical communication. Selecting the appropriate laser wavelength can effectively reduce the influence. Three atmospheric visibility of mist, fog, haze we

In order to achieve laser uniform illumination, a new laser homogenization system was designed based on the analysis of regular homogenization technology, and the homogenization technology and the uniformity of laser illumination

In order to decrease the quantity of crystal bundary, dislocation, micro-defect and transition group impurity contained in multi-crystalline silicon and further to increase solar cell′s photoelectric conversion efficiency, the sil

Due to the fine optical characteristics of cutoff filter, the configurations based on two pieces of long-pass cutoff filter or two pieces of short-pass cutoff filter were put forward respectively. Based on the geometrical optics,

Lidars emit high intensity of laser beam to the sky, which has a potential threat to the flyers. For the flight safety and the safe operation of lidar, a method was proposed for laser actively evading flying objects and an experim

Light detection and ranging (LiDAR) offers a method of remote wind speed measurement. A kind of all-fiber coherent Doppler lidar was proposed, whose components were connected via optical fibers. The simplicity of the structure is

A high spectral resolution lidar(HSRL) based on injection-seeded laser and iodine absorption filter has been developed. The basic principle, data processing method and configuration of HSRL were introduced. The HSRL measurement of

The signal-to-noise ratio(SNR) of Lidar (light detection and ranging) reflects its radiance and is one of the most important parameters for evaluation of lidar return signal quality. However, it is very difficult to estimate the v

The 532 nm Doppler lidar developed by the National Space Science Center, Chinese Academy of Sciences, is mainly used to measure the atmospheric wind field, temperature, and density. Maintaining a same reference frequency is a key

In the process of the re deployment, in order to prevent the adverse effects and assure the stability and accuracy of the sodium Doppler fluorescence lidar in the near space environment of the Chinese Academy of Sciences(Langfang,

Aiming at the limitations of support vector machine(SVM) applied in Airborne LiDAR(Light Detection And Ranging) point data classification, such as weak model sparseness, predictions lack of probabilistic sense, and kernel function

A method of detecting and recognizing space debris based on visible light camera and laser range finder was proposed in this paper. The shape of imaging was determined by the relative velocity, and distance of space debris. In ord

The optimizedfluid mechanics model was fabricated to solve the plasma of space debris excited by nanosecond pulse laser. Fluid mechanics model was divided into solution of plasma state equation, energy coupling between laser and s

Characterization of space objects creates a better understanding about the operational status and behavior of the RSO and point target detection is the main means to obtain information of space objects. While it is difficult to de

Airborne sensors reconnaissance and ground data fusion processing is the fourth grade of UAV situation awareness that planned by USA Office of the Secretary of Defense. Independent Component Analysis(ICA) that applied to the image

In response to geometry seamline detection with average separation of overlapped region and beautiful shape for remote sensing images mosaicking considering complex background, a fast automated geometry seamline generation approac

As Kernelized correlation filter is difficult to deal with the problems of illumination changes and total occlusion of the target, a target tracking algorithm based on improved Kernelized correlation filter was proposed in this pa

Skin color video measurements are very important in remote and non-invasive physiological monitoring, and its consistency always affects the measurement accuracy of physiological parameters like heart rate. An image-stabilization