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83 results about "Fully coupled" patented technology

Real-time integrated vehicle positioning method and system with differential GPS

A real-time integrated vehicle positioning method and system with differential GPS can substantially solve the problems encountered in either the global positioning system-only or the inertial navigation system-only, such as loss of global positioning satellite signal, sensitivity to jamming and spoofing, and an inertial solution's drift over time. In the present invention, the velocity and acceleration from an inertial navigation processor of the integrated GPS/INS system are used to aid the code and carrier phase tracking of the global positioning system satellite signals, so as to enhance the performance of the global positioning and inertial integration system, even in heavy jamming and high dynamic environments. To improve the accuracy of the integrated GPS/INS navigation system, phase measurements are used and the idea of the differential GPS is employed. However, integer ambiguities have to be resolved for high accuracy positioning. Therefore, in the present invention a new on-the-fly ambiguity resolution technique is disclosed to resolve double difference integer ambiguities. The real-time fully-coupled GPS/IMU vehicle positioning system includes an IMU (inertial measurement unit), a GPS processor, and a data link which are connected to a central navigation processor to produce a navigation solution that is output to an I/O (input/output) interface.
Owner:AMERICAN GNC

Photonic crystal all-optical exclusive-or logic gate structure based on interference principle

The invention relates to a photonic crystal all-optical exclusive-or logic gate structure based on an interference principle. In the photonic crystal all-optical exclusive-or logic gate structure based on the interference principle, by designing a special structure of an interference arm, a phase difference is generated between in-phase lights of different port input devices; the length of the interference arm is calculated by using a coupling mode theory, so the phase difference of input lights which pass through the interference arm is even times of Pi; and by designing the structure of a wave combining area, interference lights are fully coupled, and the logic exclusive-or operation of an output waveguide is realized. The photonic crystal all-optical exclusive-or logic gate structure based on the interference principle is made of a two-dimensional air background medium column square crystal lattice material, wherein the medium column material is crystalline silicon, and an index of refraction is 3.48; and by designing the unique structures of the interference arm and the wave combining area, the broadband exclusive-or operation of a window of 1,550 nm can be realized, and a new method is provided for miniature photonic integration.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Fully-coupled dry hole acoustic wave test probe

ActiveCN101419195AGuaranteed IncouplingChange exhaustMaterial analysis using sonic/ultrasonic/infrasonic wavesFully coupledCoupling
The invention relates to a full coupled test probe for dry hole sound wave, and belongs to the field of nondestructive examination equipment manufacture of engineering. The full coupled test probe for the dry hole sound wave comprises a sound wave probe and a pressurizing water bag, wherein the top at one sealed end of the pressurizing water bag is provided with a vent hole of which the diameter is not more than 1 millimeter. An end part of the sound wave probe is provided with a connecting device; and the pressurizing water bag is sleeved outside the sound wave probe. Air in the pressurizing water bag can be directed exhausted by the vent hole; and the pressurizing water bag is filled with water at the same time to ensure internal coupling between the sound wave probe and the pressurizing water bag. The vent hole at the top of the pressurizing water bag has double uses, namely, after the air is exhausted, the vent hole continuously keeps continuous small amount of spilling water, so as to solve coupling (external coupling) between the outer wall of the pressurizing water bag and the wall of the hole. The test probe realizes full coupling of the sound wave prove, the pressurizing water bag and the wall of the hole so that the tested data are stable and reliable, and meets the requirement of rapid detection.
Owner:CHANGJIANG GEOPHYSICAL EXPLORATION & TESTING WUHAN CO LTD

Large-power waveguide load based on electromagnetic meta-material

The invention relates to a large-power waveguide load based on an electromagnetic meta-material, and the waveguide load comprises a waveguide for transmitting a microwave signal, and also comprises an absorber which is located in the waveguide. One end of the waveguide is provided with an opening, and the other end of the waveguide is closed. One end with an opening is provided with a flange plate, and the interior of the waveguide is provided with a V-shaped cavity. Two sides surface of the V-shaped cavity respectively extend towards the other end of the waveguide from two opposite sides of the opening, and are intersected on the end face of the other end, wherein the inclined angle of the V-shaped cavity is theta which is greater than zero but not greater than 30 degrees. The absorber is located on an inner wall of the V-shaped cavity, and the absorber is made of a meta-material. According to the invention, the interior of the waveguide is provided with the V-shaped cavity, and the meta-material is welded on an inner wall of the V-shaped cavity in a mode of brazing, and serves as an absorption material, thereby reducing the size of the waveguide load, enabling the electromagnetic energy transmitted in the waveguide and the electromagnetic meta-material to be fully coupled and absorbed, and reducing the energy reflection.
Owner:BEIJING INST OF RADIO MEASUREMENT

Heat pump seawater desalination fully-coupled circulation system and method

The invention relates to a heat pump seawater desalination fully-coupled circulation system and method and belongs to the field of energy power. The system is characterized by further comprising a seawater desalination subsystem which comprises a seawater pump, a preheater connected with an outlet of the seawater pump, a seawater heater connected with an outlet of the preheater, a humidifying tower connected with a seawater side outlet of the seawater heater, and an evaporation condenser connected with a wet air side outlet of the humidifying tower. Heat released in the condensing process of a refrigerant is used for heating seawater, hot sea water and low-temperature saturated moist air make ful contact in the humidifying tower to complete heating and humidifying of wet air, then the high-temperature wet air releases heat in the evaporation condenser to be condensed, fresh water is separated out, and meanwhile concentrated seawater discharged out of the humidifying tower is used for preheating fed seawater. According to the heat pump seawater desalination fully-coupled circulation system and method, a compressor in a mechanical compression heat pump is fully used for inputting mechanical work, and a heat source does not need to be additionally arranged, so that the adaptability and economical efficiency of the seawater desalination system are improved, and the seawater desalination system meets the national targets of energy conservation, emission reduction and the energy and environment sustainable development strategy.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Method for measuring surface membrane penetration amount of sand-gravel material triaxial sample by digital image technology

The invention discloses a method for measuring the surface membrane penetration amount of a sand-gravel material triaxial sample by a digital image technology, belonging to the technical field of geotechnical tests. The method includes the following steps of: in a conventional triaxial isotropic consolidation test, obtaining a deformed image of a triaxial sample at the completion of each stage ofloading and consolidation, obtaining the skeleton volume deformation of the triaxial sample after the processing of digital image correlation technologies, and then constituting a basic theory from the skeleton deformation area of the triaxial sample body and the rubber membrane penetration area according to the total drainage volume of the triaxial sample body to calculate the change amount of the rubber membrane penetration area with the confining pressure. The scheme of the invention only needs a conventional triaxial tester and a single-lens reflex camera, and is simple in equipment. The method of the invention is fully coupled to the conventional triaxial isotropic consolidation test without additional ancillary tests. The method belongs to a full-surface non-contact measurement method, and can realize the non-contact measurement of the axial deformation and radial deformation of the full surface of the triaxial sample body, cannot cause any interference to the triaxial sample body in the measurement process, ensures the accuracy of subsequent test results, and has good promotion value.
Owner:DALIAN UNIV OF TECH +1
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