Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

247 results about "Point object" patented technology

Hyperspectral image abnormal point detection method based on selective kernel principal component analysis

The present invention provides a detecting method for the unusual point of the high spectrum image based on the selective nuclear main composition analyzing, and relates to the high spectrum image analyzing and defecting technology field. The present invention aims at solving the problem that the prior high spectrum image defecting method cannot conduct character extracting on the unusual point effectively, and produce more false alarm, and cannot detect the unusual point effectively under high background disturbance. The present invention has the procedures that the data is normalized, and the nuclear main composition is analyzed; a sliding window is constructed in the main sub-quantity; the third moment and the fourth moment of the pixel in the sliding window are calculated and compared the moments with a preset value; the value is recorded after reading all over the main sub-quantity; all the main sub-quantity are processed; the maximal main sub-quantity is selected; the unusual point detecting on the selected main sub-quantity is conducted by the RX operator, and the detecting result is output. The present invention can extract and select the character of the unusual point object in the high spectrum image effectively, and can lower the false alarm rate, and can detect the unusual point normally under high background disturbance.
Owner:HARBIN INST OF TECH

Semi-physical simulation device for fuze body object echo simulation

ActiveCN106646399AMeet the requirements of the simulationAdaptableWave based measurement systemsNumerical controlLocal oscillator signal
The invention discloses a semi-physical simulation device for fuze body object echo simulation. The device comprises an echo-free shielded box, an upper computer, a synchronous control module, a receiving branch circuit, a channel selector switch, a signal processing module, an emission branch circuit, a power source module and a local oscillator signal generator; the upper computer is used for fulfilling a parameter setting function, a projectile object crossing model establishing function and a body object echo signal waveform generation function; the receiving branch circuit is used for subjecting fuze emission signals to down conversion processing operation and obtaining digital signals by sampling intermediate frequency signals, and the digital signals are distributed to digital signal channels which correspond to scattering points in terms of quantity; the intermediate frequency signals in each digital signal channel are subjected to numerical control delay operation, Doppler frequency shift operation and amplitude attenuation operation according to all scattering point object characteristics; intermediate frequency signals in each channel are subjected to power synthesizing operation and up-conversion operation before being radiated outward via transmitting antennas. The semi-physical simulation device can be used for accurately simulating object echo signals under near field body object effects, and the semi-physical simulation device is of great significance for comprehensive research on fuze performance and reduction of development cost.
Owner:NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products