Abstract: Disclosure is a method for detecting the safety driving state of a driver, the method comprises the following steps: (a) detecting the current sight direction of a driver in real time and acquiring a scene image signal in a front view field of the driver when a vehicle runs; (b) processing the acquired current road scene image signal according to a visual attention calculation model to obtain the expected attention distribution of the driver under the current road scene; and (c) performing fusion analysis on the real-time detected current sight direction of the driver in the step (a) and the calculated expected attention distribution of the driver in step (b), and judging whether the current driver is in a normal driving state and whether the driver can timely make a proper response to the sudden road traffic accident.

Abstract: This invention discloses a method for measurement and 3D reconstruction of precipitation particles based on orthogonal dual-view imaging. An orthogonal 3D sampling space are formed by a pair of line camera and continuum light source, two pairs of planar cameras and pulse light sources placed orthogonally. The line camera scans with a speed no less than 20,000 lines per second, two cameras and pulse light sources are triggered when the line camera detects the particles in sampling area, two orthogonal images are recorded by two planar cameras using the double-exposure or multiple-exposure in one frame. The 3D images of particles are obtained by pixel matching and grid reconstruction method, based on which the 3D sizes, axis ratio, orientation, fall velocity, and other characteristics of particles are calculated. This method can measure the 3D micro-physical characteristics of precipitation particles automatically and precisely.

Abstract: The complex temporal-spatial variation of raindrop size distribution will affect the precision of quantitative precipitation estimation (QPE) produced from radar data, making it difficult to correct echo attenuation. This invention presents a method for regional attenuation correction of weather radar using a multiple microwave links (ML) network. By measuring the rain attenuation of multiple microwave links in a specific frequency, matching with the weather radar in time and space and processed with discretization. Based on a series of attenuation values of the microwave link network and combined iterations, the attenuation coefficient of each grids is obtained; the total attenuation value of the path is obtained by combining the distance between the radar and each grid point, by which the reginal attenuation of radar echo can be corrected by the ML network efficiently.

Abstract: The disclosure discloses a dynamic attitude measurement method of a star sensor based on gyro's precise angular correlation. On the basis that a dynamic compensation is performed on each of the measurement exposure frames of the star sensor and a fixed star matching vector matrix having dynamic error and noise influence is obtained in a prior art, a transform matrix between every two adjacent measurement frames of the star sensor is precisely measured by a unit including three gyros fixedly coupled with the star sensor. The transform matrix correlates the matched vector matrixes of the adjacent measurement frames of the star sensor. Finally, a correlated measurement equation is established with a series of correlated measurement frames, which is corresponding to processing a series of measurement frames as a single measurement frame.

Abstract: A variable near-null compensator for measuring aspheric surfaces by subaperture stitching includes a pair of counter-rotating CGH phase plates, each of the phase plates having a phase function including two terms Z5 and Z7 of Zernike polynomials. The phase plates are mounted on a pair of precision rotary center-through tables, wherein rotational axes of the pair of precision rotary center-through tables coincide with the optical axes of the phase plates. A figure metrology apparatus includes a wavefront interferometer, the test mirror mount, the near-null compensator and the mechanical adjustment components therefor. The optical axis of the near-null compensator coincides with the optical axis of the interferometer. A method for measuring aspheric surfaces by subaperture stitching includes the steps of mounting the test mirror, measuring the subapertures with the figure metrology apparatus, and finally processing the data by stitching.

Abstract: The disclosure discloses a dynamic attitude measurement method of a star sensor based on gyro's precise angular correlation. On the basis that a dynamic compensation is performed on each of the measurement exposure frames of the star sensor and a fixed star matching vector matrix having dynamic error and noise influence is obtained in a prior art, a transform matrix between every two adjacent measurement frames of the star sensor is precisely measured by a unit including three gyros fixedly coupled with the star sensor. The transform matrix correlates the matched vector matrixes of the adjacent measurement frames of the star sensor. Finally, a correlated measurement equation is established with a series of correlated measurement frames, which is corresponding to processing a series of measurement frames as a single measurement frame.

Abstract: A ground-based videometrics guiding method for aircraft landing or unmanned aerial vehicles recovery is provided. The method comprised the following steps: setting videos(1,2,3,4,5,6) near the landing area of the aircraft or unmanned aerial vehicles; real-time imaging the aircraft or unmanned aerial vehicles during their final approaches; and real-time measuring the trajectory, velocity, acceleration, post and other motion parameters of the aircraft or unmanned aerial vehicles by analyzing the video images and using videometrics technology, so as to provide guiding information for the aircraft landing or unmanned aerial vehicles recovery.

Abstract: A side lobe suppression method for an SAR image based on the deformation of a spatial spectral support area is provided. Using the relationship between the spatial spectral support area distribution of an SAR system and an impulse response, the trend of a side lobe in the impulse response is changed by deforming the spatial spectral support area; two SAR images with different side lobe trends are obtained by calculation; the difference information of the side lobe trends between the two SAR images is finally utilized to realize the mutual separation of a target main lobe and the side lobe, thus realizing effective side lobe suppression. The method has an obvious effect on side lobe suppression without losing image resolution, at the same time, can be realized simply, has less calculation amount, is not sensitive to noise, is also very convenient to implement, and can be directly used for processing an original SAR image.

Abstract: The present invention provides an OSGi-based heterogeneous service integrating system comprising a Java virtual machine and an OSGi container, the system further comprises a service management module, a handler management module, a monitor module, a service discovery module and a handler module that are running on said OSGi container, wherein: said service management module is adapted to monitor requests for registering and using of a remote service, to manage different types of services, and to notify said handler management module to make corresponding publishing and calling for different service configuration types; said handler management module is adapted to manage said handler module and to publish service to and call service from remote end points, and to call the corresponding handler module based on information delivered by the service management module, and to maintain information of currently published services and adopted remote services; said monitor module is adapted to monitor a local service r