Patents
Literature
2 results about "Measuring receiver" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
In telecommunication, a measuring receiver or measurement receiver is a calibrated laboratory-grade radio receiver designed to measure the characteristics of radio signals. The parameters of such receivers (tuning frequency, receiving bandwidth, gain) can usually be adjusted over a much wider range of values than is the case with other radio receivers. Their circuitry is optimized for stability and to enable calibration and reproducible results. Some measurement receivers also have especially robust input circuits that can survive brief impulses of more than 1000 V, as they can occur during measurements of radio signals on power lines and other conductors.
Environmentally adaptable antenna
A thermally adaptive antenna system having an antenna structure, an EM) power signal, a DC power signal, an impedance tuner, a temperature sensor in the antenna, a DC-DC conversion component, and a microcontroller. The microcontroller provides a tuning command to the impedance tuner, causing the impedance tuner to compensate for an impedance change in the antenna due to a temperature change in the antenna. An environmentally adaptive antenna system has an antenna structure, an EM power signal, a DC power signal, an EM power splitter, a directional coupler, a reference receiver, a measurement receiver, an impedance tuner, and a controller. The controller calculates antenna impedance change based on observed changes in return loss, calculates a corresponding correction to the antenna impedance, and sends a command to the impedance tuner to implement the correction to the antenna impedance.
Owner:FAIRCLOTH DANIEL
Geological exploration method and device based on three-dimensional reverse time migration
This application relates to the field of geological exploration, specifically to a geological exploration method and apparatus based on three-dimensional reverse-time migration. The method includes: constructing a three-dimensional velocity model of the area to be explored; performing source simulation and receiver simulation on the three-dimensional velocity model; calculating the source wavefield based on the source location and source signal, and storing the boundary source wavefield within the source wavefield; performing reverse-time reconstruction based on the receiver point location and measured receiver point signal to obtain the receiver point wavefield; reading the boundary source wavefield, and performing complete wavefield recovery based on the boundary source wavefield to obtain the recovered source wavefield; performing time-coupled integration on the recovered source wavefield and the receiver point wavefield to obtain a three-dimensional subsurface reflection structure image of the area to be explored. This application can achieve the technical effect of reducing data transmission and storage costs while improving the efficiency of geological exploration.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)