38 results about "Major minor" patented technology

The invention provides a main and secondary clack tracker and the tracking method for a warning radar. The tracker comprises antennas 1-5, a servo platform 6, PIN attenuators 7-11, high-frequency amplifiers 12-16, frequency mixers 17-21, mid-frequency amplifiers 22-26, a local oscillation assembly 27, a digital receiver 28, wave detectors 29-30, a summing circuit 34, and a signal processor 35. The antennas 1-5 are mounted on the servo platform 6, and are respectively connected with the inputs of the PIN attenuators 7-11; the outputs of the PIN attenuators 7-11 are connected with the inputs of the high-frequency amplifiers 12-16; the local oscillation assembly 27 is controlled by the processor, and generates microwave signals with fixed frequency difference from the frequency of the incident signals, and is connected with the frequency mixers 17-21 together with the output signals of the high-frequency amplifiers; the outputs of the frequency mixers 17-21 are connected with the inputs of the mid-frequency amplifiers 22-26, the outputs of which are connected with the digital receiver 28 and the wave detectors 29-30; the outputs of the wave detectors 29-30, passing the summing circuit 34, are connected with the signal processor 35 together with the output from the digital receiver 28. By controlling the front ends of microwaves through the arrival signals of the front ends of microwaves and the signal processor, the invention combines EKF (extended Karman filtering) arithmetic with missile controlling value, capture concurrently the main and secondary clack of a radar, so as to attack a target precisely.

The invention discloses a multi-beam forward-looking sonar target detection method. Using the present invention can effectively detect the target. The present invention first adopts the median filter based on 3×3 window to remove the scattering noise in the image and improve the quality of the sonar image; The corrosion operation of the window kernel to do one erosion operation and the morphology operation can better remove the false target with a small area, that is, further reduce the noise, reduce the processing pressure and complexity of the recognition process; Remove false targets and improve detection accuracy.

The invention relates to a mechanical weighting mechanism of the electronic scale of dynamic grabbing bucket of the gantry crane, belonging to the technical field of weighting devices, wherein the pivot brackets of the transmission shaft of the major-minor hook wound rolls of the door machine are respectively connected with the bearing support and then are press-arranged on the upper surface of the flat sensor. The flat sensor is fixed on the underframe of the door machine room by a holder base. A wheel rib load cell is arranged at the lower terminal of the load limiter of the door mechanicalstructure, and the major weighting mechanism comprises the wheel rib load cell and the flat sensor. The mechanical weighting mechanism also comprises an automatic counting mechanism used for the weighing compensation of the amplitude modulation of the electronic scale of the grabbing bucket of the door machine and for the automatic counting mechanism of the speed testing, the high weighing compensation testing of the electronic scale of the grabbing bucket of the door machine. The mechanical weighting mechanism of the electronic scale of dynamic grabbing bucket of the gantry crane has the advantages that the problems of measure accuracy lost and extremely big repeated error of the prior art are solved, and the weighting mechanism has rapid, accurate, stable and reliable measure, the cost is saved for the harbor, and the work efficiency and the economic benefit of loading and unloading are improved.

The invention discloses an optical fibre bicyclo redundancy controller for controlling local area network, comprising a major ring signal selector, a minor ring signal selector, a major signal repeater and a clock generator, wherein the controller is linked between a CAN interface, a major-minor ring optical fibre receptor and a major-minor ring optical fibre sender as a transmitting-receiving unit of the CAN node, the functions of the major signal selector and the minor signal selector are to dynamically forming an optical fibre working loop, the function of the major ring signal repeater is to realize a signal transfer between the CAN node and the optical fibre loop, and the clock generator is designed to provide a clock signal acquired by the operation of the circuit.