63results about How to "Method innovation" patented technology

The invention discloses a data processing method for a Beidou and GPS common frequency point real-time signal receiving and processing system. Beidou second generation and GPS common frequency point signals are transmitted into three RF (radio frequency) front-end modules through the same antenna, through a series of amplification, filtering and down-conversion, the signals are converted into 2-bit medium-frequency digital signals in an A / D mode, the medium-frequency digital signals are acquired into an internal storage of an FPGA under the control of the FPGA and stored as data blocks of certain length in a ping-pong mode, and finally, the data blocks are transmitted to a computer through a USB controller. The method has the advantages that the technical purposes that the Beidou second generation and the GPS common frequency point signals are captured rapidly on a software framework of a computer platform and the data are processed in real time are achieved, and the locating accuracy, reliability, integrity and usability of a single locating system are remarkably improved; and based on software development of the software radio technology, an algorithm of a traditional hardware receiver is eliminated, and a reconfiguration research mode is achieved.

The present invention discloses a real-time signal receiving and processing system of public frequency points of a Beidou navigation satellite system and a GPS. Signals of the public frequency points of the Beidou navigation satellite system and the GPS enter three RF radio frequency front end modules through the same antenna, are subjected to a series of amplification, filtering and down-conversion processing, and are converted to 2bit medium frequency digital signals through the A / D (Analog to Digital) conversion, and the medium frequency digital signals are acquired to the internal storage of an FPGA under the control of the FPGA, are stored to be a data block with a certain length in a ping-pong mode, and are transmitted to a computer in a block mode through a USB controller. The real-time signal receiving and processing system of public frequency points of a Beidou navigation satellite system and a GPS is able to perform rapid capture and real-time data processing of signals of the public frequency points of the Beidou navigation satellite system and the GPS on the software architecture of a computer platform, and the like, therefore positioning accuracy, reliability, integrity and availability of a single positioning system are substantially improved; and moreover, the software development on the basis of the software radio technology is performed, thereby getting rid of the algorithm of a traditional hardware receiver and realizing the reconfiguration of a research mode.

A method for preparing a super-hydrophobic composite nano-array interface material, the preparation steps are: 1) using a copper sheet as a base material to prepare a zinc oxide nanocone film by chemical bath deposition in a hot water bath; 2) using a vapor phase deposition method on Use seventeen perfluorosilane to super-modify the oxidized nano-cone membrane at 120°C; 3) configure polyvinyl alcohol low-solid content aqueous solution; The aqueous solution is atomized through the condensation platform to reduce the surface temperature of the copper-based zinc oxide nano-cone film to 1°C to 5°C, so that the polyvinyl alcohol dispersion liquid dispersed in the air can condense the surface of the super-hydrophobic zinc oxide nano-cone film evenly, at high magnification Atomized deposition under the observation of the CCD imaging system; 5) Quickly transfer to a constant temperature hot stage, and cure at a constant temperature. After the solvent moisture is completely volatilized, the polyvinyl alcohol is cured and adsorbed and adhered to the surface of the zinc oxide nanocone to form a hydrophilic-hydrophobic composite nano-array interface; The process is simple, the cost is low, and the resistance to condensation and frosting is high.