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37results about How to "Overcoming Application Limitations" patented technology

Ground phase-correcting method for double-channel tracking system

InactiveCN102680953AThe conditions for ground alignment are simpleImprove calibration accuracyWave based measurement systemsPhase shiftedCoupling
The invention provides a ground phase-correcting method for a double-channel tracking system and aims to provide a method which is independent from any external condition and has a phase-correcting precision equivalent to that of a standard tower-correcting method. According to the technical scheme, the ground phase-correcting method comprises the following steps: firstly, placing a beacon on the ground in a position with a more than 0.3R radial distance from a ground station antenna, adjusting a beacon signal level and finishing level calibration at an input end of a ground station tracking receiver; causing the ground station antenna to direct to the beacon direction and correcting the phase; causing the ground station antenna to deviate from the beacon for 4 milli-inches along azimuth and pitching directions; respectively adjusting phase shift values of an azimuth phase shifter and a pitching phase shifter of the tracking receiver; storing the phase shift values when azimuth error voltage and pitching error voltage are maximal; controlling the ground station antenna to deviate from beacon null point along the azimuth and pitching directions; checking error voltage polarity and cross-coupling; automatically tracking the beacon; checking a convergence condition of a servo loop; and counting and recording angle-measuring random errors.
Owner:10TH RES INST OF CETC

Real-time monitoring video and three-dimensional scene fusion method based on three-dimensional GIS

The invention discloses a real-time monitoring video and three-dimensional scene fusion method based on a three-dimensional GIS (Geographic Information System), which belongs to the technical field ofthree-dimensional GIS, and comprises the following steps: S1, inputting model data, checking texture and triangular patch number of an artificial modeling model by using hypergraph iDesktop software,removing repeated points, converting a format to generate a model data set, and storing the model data set in a database; performing root node combination and texture compression on the original OSGBformat data by the inclination model; and S2, converting the model data set and the inclined OSGB slice into a three-dimensional slice cache in an S3M format. The live-action fusion method disclosedby the invention is oriented to the fields of public security and smart cities, avoids the application limitation of the traditional two-dimensional map and monitoring video, solves the disadvantage that the monitoring video picture is split, enhances the spatial perception of video monitoring, improves the display performance of multi-path real-time video integration in a three-dimensional sceneto a certain extent, and improves the real-time performance of the three-dimensional scene. The method can be widely applied to the fields of public security and smart cities with strong videos and strong GIS services.
Owner:NANJING GUOTU INFORMATION IND

Ultrasonic processing method for enhancing size accuracy of micro-electroformed apparatus

The invention relates to an ultrasonic processing method for enhancing the size accuracy of a micro-electroformed apparatus, belongs to the technical field of micro-manufacturing and particularly relates to a method for enhancing the size accuracy of the micro-electroformed apparatus. A process for manufacturing the micro-electroformed apparatus comprises the following processes: performing pretreatment on a nickel substrate, manufacturing a micro-electroformed rubber mold and performing micro-electroforming. In the process of manufacturing the micro-electroformed rubber mold, the nickel substrate coated with SU-8 rubber is fixed on an ultrasonic workbench after whirl coating, prebaking, photo-etching and after-baking are performed, is ultrasonically vibrated and developed to obtain the micro-electroformed rubber mold. The micro-electroformed rubber mold is soaked into electrotyping solution and is subjected to electro-deposition in a groove of the micro-electroformed rubber mold to form a nickel-electroformed layer. The SU-8 rubber is removed and vacuum annealing treatment is performed to eliminate residual stress. Due to the adoption of the method, the amount of the electrotyping solution absorbed by the SU-8 rubber in the electroforming process is reduced, swelling of the rubber mold is lowered and the size accuracy of the micro-electroformed apparatus is enhanced.
Owner:DALIAN UNIV OF TECH

Electric system static safety analysis method considering backup automatic switch

The present invention discloses an electric system static safety analysis method considering backup automatic switch. The method comprehensively utilizes a voltage loss determination algorithm based on Jacobian matrix singularity, a backup automatic switch input algorithm, a mixed current algorithm, a sensitivity method and the like. The voltage loss determination algorithm based on Jacobian matrix singularity is employed to perform voltage loss-island topology analysis of a power grid and check whether the power grid has voltage loss nodes or not. If the power grid has no voltage loss nodes,the sensitivity method is directly employed to calculate the current of the system after faults are generated; if the power grid has voltage loss nodes, the backup automatic switch input analysis needs to be performed to apply motion to the related backup automatic switch in the power grid. The state of the power grid can be possibly changed to N-1+1 and even N-1+M, at the same time, the mixed current algorithm can be utilized to calculate the current of the system. The method can adapt radiating features of an urban power grid distribution network and can consider automatic device factors soas to greatly express the practical operation of the urban power grid when risk assessment of the urban power grid is performed.
Owner:SHENZHEN POWER SUPPLY BUREAU

Spherical electrode and spherical capacitive hysteresis type liquid level switch containing the spherical electrode

The invention discloses a radius tip electrode and a spherical capacitance return difference type liquid level switch with the radius tip electrode, and relates to the technical field of conductive liquid level detection. The problems that an existing liquid level switch is low in precision, high in foam floating ball water absorption rate and poor in epoxy resin insulating and pressure resistant property are solved. According to the radius tip electrode, one end of a binding post makes contact with and is connected with the outer surface of a metal spherical electrode, an insulating layer wraps the outer surfaces of the metal spherical electrode and the binding post, the insulating layer seals the metal spherical electrode and the binding post, and the other end of the binding post is located outside the insulating layer to serve as the wiring end of the radius tip electrode. According to the spherical capacitance return difference type liquid level switch, the wiring end of the radius tip electrode is connected with the measurement signal input end of a measuring circuit, and the wiring end of a liquid electrode is connected with the measurement signal input end of the measuring circuit. The radius tip electrode and the spherical capacitance return difference type liquid level switch are suitable for conductive liquid level detection.
Owner:哈尔滨西陆科技有限公司

A high-performance interface preparation method based on carbon-carbon bonds

The invention discloses a method for preparing a high-performance interface based on a carbon-carbon bond. By introducing a two-dimensional nanomaterial graphene between a carbon nanotube CNT and a metal, a mixed structure of CNT-graphene-metal-target substrate is obtained. Among them, CNT and graphene are homogeneously connected, graphene and metal are in "face-to-face" contact, and CNT and target substrate are connected to metal through graphene. This structure converts the "point-plane" van der Waals connection between CNT and metal with Schottky barrier into a homogeneous connection between graphene and CNT. Metal-graphene wraps the tip of CNT. In addition, graphene and metal- The "surface-to-surface" contact between the target substrates increases the contact force and contact area, which jointly improves the mechanical strength and boundary resistance between the four; at the same time, the combination of vertical and lateral thermal conductivity of CNT and graphene improves the thermal conductivity of the structure rate, so that the mechanical strength of the structure is enhanced, the thermal contact resistance is reduced, the generation of Joule heat is reduced, and the reliability and heat dissipation of the device are significantly improved.
Owner:HUAZHONG UNIV OF SCI & TECH
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