摘要:
A multi-sensor signal fusion apparatus is provided for automatic modulation classification of weak unknown signals in non-cooperative communication environment with a more accurate description of the signal. The multi-sensor non-cooperative demodulation device combines a group of sensors, a signal fusion sensor, a means for signal demodulation, and a means for automatic modulation classification. An output of the signal fusion sensor is sent to a means for modulation scheme classification to select the appropriate demodulation technique for demodulating the unknown signal and provide the necessary intelligence about the monitored signals to the user and allow the user to simulate the unknown non-cooperative signal. The present invention also contemplates a multi-sensor signal fusion article of manufacture with a storage medium encoded with machine-readable computer program code for more accurate descriptions of monitored signals and methods for achieving higher accuracy descriptions of monitored signals in a non-cooperative environment with multi-sensor non-cooperative demodulation.
摘要:
Embodiments of the present invention disclose a method for the generic mapping procedure GMP mapping, a method for GMP demapping, and an apparatus. The method for mapping includes: carrying, in an overhead GMP OH of the ith GMP block container, information about a TS that needs to be occupied by the (i+n)th GMP block container; adjusting the (i+n)th GMP block container according to the information about the TS that needs to be occupied by the (i+n)th GMP block container; performing, according to the adjusted (i+n)th GMP block container, the GMP mapping on customer service data to be sent, so that a receive end is capable of adopting a corresponding demapping manner according to a change of the block container, which implements lossless mapping and demapping processing by adopting a GMP for a variable block container.
摘要:
A method for identifying the modulation scheme of a software defined radio in real-time without pilot symbols between transmitters and receivers, includes providing a predetermined look-up table (LUT) in the software-defined radio wherein the LUT is prepared by pre-calculating discrete likelihood ratio test (DLRT) function values; storing the pre-calculated DLRT values in said LUT; and indexing the pre-calculated DLRT values by addresses.
摘要:
A method for rapidly analyzing and editing data files with a number GUI's and an adaptive decimation ratio in a computer allows processing data files and signal data files within a given data segment for a better fit into a limited-size working space buffer and provides improved resolution of data segments in a simplified way using GUI's that allow the user to point and click at a computer screen instead of performing manual calculations. A large data segment is adaptively decimated to a smaller size automatically so that a lower resolution version of the data segment will be loaded into a fixed-size small buffer in hardware working space for further data editing. The decimation and loading process will be repeated until the user finds the desired data-section of interest.
摘要:
One embodiment is a machine comprising a sequential wavefront scanner, a variable aperture, a position sensing device and a controller. The controller is coupled to the variable aperture and sequential wavefront scanning device and configured to coordinate the operation of the variable aperture and the sequential wavefront scanning device.
摘要:
In embodiments of optical arrangements of a working distance sensor in a fundus camera that can improve the determination of a correct working distance as well as the transverse positioning of the camera a number of near infrared light sources are arranged to project a number of near infrared illumination beams into the visible light illumination path of the fundus camera and a live view of the retina under near infrared illumination is captured and displayed on a monitor. These embodiments of optical arrangements and associated methods will enable an operator to directly determine if there is any undesirable flare or other artifact appearing within a designated region on the infrared retina view as a result of a wrong alignment of the fundus camera with respect to the eye in terms of not only the working distance but also the horizontal and vertical positions. Pattern recognition algorithms can be used to further enhance the positioning sensitivity of the working distance sensor. An additional iris alignment sensor can be added to achieve a coarse alignment and also function as a measure to determine if the dilation of the iris size is sufficient for different mode of fundus imaging.
摘要:
A short arc lamp driving circuit includes a trigger boosting circuit, a flash current control circuit, and a closed loop exposure control and calibration circuits that, when combined, can produce short pulses of light with short time separation, quasi-continuous illumination light, and meanwhile, an extremely large dynamic range of delivered and/or calibrated light power or energy.
摘要:
A sequential wavefront sensor comprises a light beam scanning module, a sub-wavefront focusing lens, a detector with more than one photosensitive area and a processor for calculating the sequentially obtained centroids of a number focused light spots from the sub-wavefronts to determine the aberration of the input wavefront. A sequential wavefront sensing method comprises the steps of; sequentially projecting a number of sub-wavefronts onto a sub-wavefront focusing lens and a detector with more than one photosensitive areas, calculating the centroid of the focused light spot from each sub-wavefront, and processing the centroid information to determine the aberration of the wavefront. In particular, a method for auto-focusing and/or auto-astigmatism-correction comprises the steps of sequentially projecting a number of sub-wavefronts around an annular ring of a wavefront to a sub-wavefront focusing lens and a detector, calculating the centroid of focused light spot from each sub-wavefront to figure out the centroid trace and hence the defocus and/or astigmatism, adjusting the focus and/or astigmatism of the optical imaging system before the wavefront sensor so that the measured defocus and/or astigmatism is minimized.
摘要:
Electronic card connection devices are provided. An electronic card connection device includes a bottom plate, a first and a second fixing components, and an elastic structure. The bottom plate includes a first and a second lateral parts opposite to each other. The first fixing component and the first lateral part form a first disposition space. The second fixing component and the second lateral part form a second disposition space. When an electronic card is at a first location, the electronic card is partly in the first disposition space and independent of the second disposition space, allowing the electronic card to exit. When the electronic card is at a second location, the electronic card is partly in the first and second disposition spaces, and resilience supplied by the elastic structure forces the electronic card to substantially contact the first and second fixing components, thus, the electronic card is fixed therein.
摘要:
A digital camera that combines the functions of the retinal camera and/or corneal camera into one, single, small, easy to use instrument includes features such as image and laser spot stabilization, an LED light source, stereo corneal imaging, polarizing reflection reduction, visual function testing, and so on.