To improve the coupling efficiency for a Large-mode-area Fiber (LMAF) and a Single-mode Fiber(SMF), a Thermally Expanded Core (TEC) technique was used to expand the core of SMF to implement the mode field adaptation for the LMA do

Spectral Domain Optical Coherence Tomography (SDOCT) and air jet indentation technology were combined to assess the corneal biomechanical properties. A corneal mold was designed to make eight different stiffness phantoms with the

To reduce the time-consuming and misinformation of one dimensional signal recognition by the pre-warning system in a Phase-sensitivity Optical Time-domain Reflectometer(Φ-OTDR), a new method to acquire two dimension signals by the

When a large aperture collimator is used to test large aperture optical devices or components, the error introduced by the collimator will effect the measuring accuracy. This paper proposes a new method to eliminate the error from

Four different Chinese domestic coffee beans were identified rapidly by combining near infrared hyperspectral imaging technique and five kinds of discriminant models . A near-infrared hyperspectral imaging system covering the spec

As the existing radiation calibration for a shortwave infrared system with large aperture needs a huge infrared collimator and has poor motility and cost much, this paper proposes a new calibration method based on the amendment of

A non-diffracting beam based probe was proposed, then the probe was integrated with a total station to form a combined measurement system for measuring space coordinates of hidden parts in a large-scale space. The constructs and p

To detect rapidly the oil yield of an oil shale on a single point measurement, a detection method was proposed based on combination of wavelengths by a portable near infrared spectroscopy. By taking the kaolin mixed with oil simul

The reflection process of the fast-steering mirror in an electro-optical tracking system was researched to improve its tracking precision. Firstly, the relationship of the turning angles between fast-steering mirror and reflection

To estimate the performance of an Aviation Multi-angular Polarimetric Radiometer (AMPR) precisely, its signals and noise were analyzed and the estimation processing for signal-to-noise ratios (SNRs) were investigated. The working

In consideration of the serious chromatic aberration and lower energy transmittance of a multi-band infrared MWIR/LWIR(Medium Wave Infrared/Long Wave Infrared) dual-FOV(Field of View) common-path optical system, a dual-FOV and dua

According to the demands of an array detector in the X-ray pulsar navigation system for Micro-channel Plate(MCP), a selection method for the MCP was explored. Four key parameters for the selection of MCPs, the uniformity of gain,

A photon counter model was established to analyze theoretically and measure actually the effect of dead time of the photon counter in a micro-pulse lidar. A correct method for the influence of photon-counting on micro-pulse lidar

The coupled angles between different axes of an Electrostatically Suspended Accelerometer (ESA) are related to the parallelism error of a sensor head, and it is hardly measured accurately by using classical methods. Therefore, a n

To deal with the problems of complex structure parameters, unknown interference factors and lower modeling precision in the Dynamically Tuned Gyroscope (DTG) mechanism modeling by the traditional Subspace Identification Method(SIM

The thermal error from a dual direct feed axis driven by linear motors was analyzed and the error compensation method was proposed to improve the accuracy of the system movement. The causes of thermal error generation in the motio

A flexible supporting structure composed of 3 Bipods was designed to enhance the surface accuracy of a minitype reflector in complex environments. Firstly, the flexibility matrixes of the Bipods and whole support structure were es

On the basis of Micro-electro-mechanical System(MEMS), a broadband electrochemical seismometer was developed. The structure parameters related to the seismometer were analyzed and a developing scheme based on MEMS technology was p

This paper analyzes the reason why the polymer is melted on a non-forming surface during ultrasonic embossing and proposes a method to inhibit the polymer melting. On the basis of the heating mechanism of ultrasonic, it points out

As Electric-Optic(EO) stabilized platform is effected by the disturbance of friction, windage, unbalance and base motion in stabilizing a Line of Sight(LOS), this paper explores the mechanism and method to eliminate the disturbanc

For designing silicon micro-gyroscopes and optimizing their structures, the effects of intrinsic frequency and modal of a silicon micro-gyroscope on its performance were researched. On the basis of energy theorem, a theoretical fo

A separated model parameter identification method for electro-optical stabilized platform servo systems was presented. The model of servo systems was separated into a linear part and a nonlinear part. In the process of parameter i

The attitude maneuver and stable task of a small satellite by using a Single Gimbal Control Moment Gyro(SGCMG) as an actuator was explored with the terminal sliding mode control method. Firstly, a small satellite mathematical mode

A piezoelectric energy harvester based on Pneumato-coupling Piezoelectric Vibration (PHPV) was presented for the energy harvesting of low-frequency/high-level vibration and the self-powered active vibration control based on energy

An accurate analysis theory of thermal deformation and a simulation method were proposed to ensure the optimum performance of mechanical aparts affected by thermal errors. From the view of microscopic molecular mechanics theory, a

This research focuses on the thin circular arc rotor airfoils at a low Reynolds number. A novel thin circular arc airfoil with a convex structure was designed in consideration of its demand for high aerodynamic performance, high s

A target positioning method based on simulation primary adjustment and experimental error analysis was proposed to improve the efficiency and precision of target positioning in a high power laser device. A 3-CCD sensor was used to

A kind of orbit determination technology for a space target based on satellite borne electro-optical imaging, tracking and ranging was proposed to obtain the orbit movement information of the space target. On the basis of surveyin

To realize the obstacle avoidance and automatic navigation of a robot in a low texture environment, an active stereo visual system consisting a binocular camera and a compact laser projector was established. The dense stereo match

On the basis of tensor-based theory applied to the high-dimensional image processing, a tensor-based sparse representation algorithm was proposed to preprocess lung CT images and to enhance the useful information for the images. F

As traditional single sequence scene reconstruction method is easy to loss scene information and has a lower data utilization, this paper proposes an approach to the registration between multiple sequences for scene reconstruction

To recognize and locate artificial targets of a rover and a lander in Mars exploration, a two-step artificial target location method is proposed by combination of the characters of artificial targets of the curiosity rover with Ma

The sparsity of a star image was explored in different representation approaches to apply better sparse representation to the compressive imaging process of a star tracker. The sparsity of star image was analyzed in two ways. In t

An articulation training method for children with hearing disorder was proposed based on a visualization tongue model. By training on the position of articulation for children who have residual hearing and hearing compensation, th

To improve the real-time performance and positioning accuracy of space object surveillance using an optoelectronic telescope, a fast recognition and precise orientation system for space objects was established. The algorithms for

For the motion blur problem of a visual image produced in moving processing, a blind image restoration method based on sparse representation and Weber's law is proposed. The method uses a shock filter to predict the sharp edges of