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2 results about "High mode" patented technology
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System high mode. System high mode, or simply system high, is a security mode of using an automated information system (AIS) that pertains to an environment that contains restricted data that is classified in a hierarchical scheme, such as Top Secret, Secret and Unclassified.
A laser gyroscope frequency stabilization method
The application discloses a laser gyroscope frequency stabilization method and belongs to the technical field of precise laser gyroscopes. The application comprises the following steps: a mode (light intensity fluctuation change) is designed as a high-low period mode; high mode and low mode are denoised, analyzed, grouped and numbered in groups; the mode is selected and the mode corresponding position code is recorded so as to improve the stability of the frequency stabilization system; the frequency stabilization small dithering frequency adaptability is selected; and the frequency stabilization small dithering amplitude is adaptively adjusted. The application can effectively solve the mode selection problem of multiple types of laser gyroscopes, reduce the frequency stabilization fluctuation, improve the frequency stabilization mode selection accuracy and stability, and increase the small dithering adaptability and adaptability.
Owner:BEIJING AEROSPACE ERA LASER NAVIGATION TECH CO LTD
Signal detection device, signal detection method, and program
ActiveUS12665695B2Optical mode multiplex systemsElectromagnetic transmissionFrequency reuseSoftware engineering
One aspect of the present invention is a signal detection device including a mode demultiplexer configured to convert N (N is a natural number) spatial mode signals including a plurality of higher modes excited in a transmission path fiber into N base modes and output the N basis modes, a frequency conversion unit configured to convert N optical signals into frequencies different from each other, a multiplexing unit configured to multiplex the N optical signals having frequencies that have been converted, and a reception unit configured to photoelectrically convert a multiplexed optical signal while maintaining modulation information for a phase and polarization, perform digital signal conversion and signal processing, and demodulate an original information sequence.
Owner:NT T INC