2results about How to "Simplify implementation difficulty" patented technology

The application discloses a ship mobile label tracking method based on video recognition and AIS data fusion, which comprises the following steps: 1, converting the AIS latitude and longitude uploaded by a ship into Cartesian coordinate data; 2, transmitting the Cartesian coordinate data to a video recognition device; 3, predicting the position of the ship; 4, converting the predicted coordinate position into image coordinates; 5, converting the image coordinates into screen coordinates; 6, obtaining the position of the ship in the screen; and 7, binding the mobile label with the screen coordinates of the ship to realize the tracking and hanging of the mobile label. The application provides a ship mobile label tracking method based on video recognition and AIS data fusion, which can not only monitor the near and far distance ships on the sea, but also can simplify the monitoring tracking and realization difficulty and reduce the cost through the fusion of video recognition and AIS data, so as to realize the tracking and monitoring of the passing ships in a mobile label automatic tracking mode.

The invention discloses a correlation type optical time domain reflection signal processing method and system, and relates to the technical field of optical fiber sensing, and the method comprises the following steps: a transmitting end transmits a dual-polarization quadrature phase shift keying optical signal to an optical fiber; a receiving end obtains a coherent superposition signal of the dual-polarization quadrature phase shift keying optical signal reflected by each scattering point of the optical fiber through coherent detection; respectively calculating respective Jones vector inner products according to the dual-polarization quadrature phase shift keying optical signal and the coherent superposition signal, and performing preset correlation operation according to the Jones vector inner products of the dual-polarization quadrature phase shift keying optical signal and the coherent superposition signal to obtain a composite signal. Natural suppression of laser phase noise, obvious weakening of optical fiber front section common optical path disturbance and stable measurement insensitive to polarization state rotation can be realized.