1465 results about "Radio wave" patented technology

To provide a game machine that allows game parlor staff or the like to easily notice malfunctions which have occurred in detection means.SOLUTION: A Pachinko game machine PZ4 includes first detection means (magnetic sensor MS) capable of detecting a first event (magnetic fraudulent act), and second detection means (first radio wave sensor FR, second radio wave sensor SR) capable of detecting a second event (radio wave fraudulent act). When a malfunction (e.g., disconnection) occurs in wiring related to the first detection means, the game machine can issue a first abnormality notification (error notification in a magnetic abnormality notification mode). When a malfunction (e.g., disconnection) occurs in wiring related to the second detection means, the game machine can issue a second abnormality notification (error notification in a sensor abnormality notification mode) that is different from the first abnormality notification.SELECTED DRAWING: Figure 59

A radio wave lens includes a first surface, a second surface, and an optical axis passing through the first surface and the second surface. The first surface has concave portions or convex portions provided concentrically or symmetrically with respect to the optical axis in plan view, and a depth of each of the concave portions or a height of each of the convex portions is set according to a distance from the optical axis.

A vehicle antenna apparatus installed in a vehicle is provided. The vehicle antenna apparatus includes an array antenna including a plurality of antenna elements, and a processor configured to perform at least one instruction. The processor is configured to obtain, based on a sensing result of a sensor for sensing a position of a user riding in the vehicle, information about the position of the user, adjust, based on the information about the position of the user, a phase of at least one radio wave signal such that a position of a radiation pattern formed by the at least one radio wave signal output from the plurality of antenna elements and the position of the user riding in the vehicle vary from each other, and control the array antenna to output the at least one phase-adjusted radio wave signal.

A radio wave propagation environment reproduction system according to an embodiment includes: a transmitter to transmit radio waves in a predetermined direction in a reverberation chamber; a reflection angle change RIS to reflect the radio waves transmitted; an installation angle controller to control an installation angle of the reflection angle change RIS; a reflection angle controller to control a reflection angle of the radio waves; a direction-of-arrival estimator to estimate a direction of arrival of the radio waves reflected; and a control server to control the installation angle controller and the reflection angle controller on the basis of the direction of arrival of the radio waves estimated.

Provided are an information processing device, an information processing method, and a computer program that enhance spectrum utilization efficiency in an effective manner.An information processing device of the present disclosure includes a processing unit that calculates, on the basis of position information regarding a first receiver and arrangement information regarding a repeater that reflects a first radio wave transmitted from a first transmitter to relay the first radio wave to the first receiver, an interference source region for determining whether or not a second transmitter that makes a secondary use of a spectrum identical to or adjacent to a spectrum used by the first transmitter and the first receiver is located at a position where there is a possibility that a second radio wave transmitted by the second transmitter is reflected by the repeater to cause interference affecting the first receiver.

The invention relates to a reconfigurable equipment simulation system based on software radio, and the system achieves the high-integration, user-friendly and efficient-management reconfigurable equipment simulation system through the modularization and seamless integration of a radio waveform design function, an equipment simulation user operation interface design, a business logic function design and a project management function. Therefore, even if a user does not have a deep programming capability, the user can quickly construct, test, manage and deploy the equipment simulator with complete functions. The system is rich in waveform component and UI component library, customizable in function and good in flexibility, software radio waveform design and equipment simulation are innovatively and seamlessly integrated, automatic non-inductive or manual upgrading can be achieved, the universality is good, various equipment simulators can be designed, the designed equipment simulators have open function expansion, and the system is suitable for popularization and application. And a complete project management process is provided.

Provided are methods, systems, and computer program products for lane keep tracking and / or localization of a vehicle using a radar to detect metallic particles in paint applied to lane markings or curb markings. An example method may include: causing a radar system of a vehicle to output radio waves; receiving a radar image from the radar system corresponding to returned radio waves; determining a portion of the radar image includes lane or curb markings, wherein the lane or curb markings are embedded with metallic particles; and determining a location of the vehicle based at least in part on the determined portion of the radar image that includes the lane or curb markings.

To provide a kick sensor capable of preventing erroneous detection.SOLUTION: A kick sensor 1, which is designed to detect a movement of a human leg serving as a trigger of controlling a vehicle door when installed in a vehicle, includes a first antenna 10 that receives radio waves from at least the side of the vehicle door, and a second antenna 20 that receives radio waves from at least the bottom of the vehicle door.SELECTED DRAWING: Figure 2

This disclosure relates to a propagation environment estimation system capable of creating an environment for increasing, through learning, the simulation accuracy for propagation characteristics of wireless radio waves. This propagation environment estimation system comprises a simulation circuit and an error calculation circuit. The simulation circuit receives data of a verification area and a wireless radio wave source. Further, the propagation characteristics of the wireless radio waves in the verification area are simulated on the basis of the data. The error calculation circuit calculates an error between the simulation results and the results of verification of the propagation characteristics of the wireless radio waves in the verification area. Further, a parameter used by a learning model of the simulation circuit is updated so as to reduce the error. The simulation circuit receives the trained learning model. Further, the propagation characteristics of the wireless radio waves are simulated by using the trained learning model for newly inputted data.

To provide a configuration capable of surely making a wireless tag of an input material inputted through an input opening a reading target without making a wireless tag of a not-yet-inputted material a reading target.SOLUTION: A dust box 10 is stored in a storage part 30 after medical equipment E inputted through an input operation 21 passes through in a radio wave leakage prevention area S1, a wireless tag reader 40 and an antenna 41 are arranged so as to make a wireless tag T in the radio wave leakage prevention area S1 a communication target, and a radio wave absorption part 50 is arranged around the radio wave leakage prevention area S1.SELECTED DRAWING: Figure 5

This communication apparatus comprises: a control unit that determines, on the basis of a first transmission time for performing a plurality of signal transmissions in a device, a second transmission time for radio waves to be used for the plurality of transmissions; and a communication unit that transmits the radio waves to the device in the second transmission time.

To specify the position of a movable body even in a situation where it is difficult to specify the position based on the received radio wave intensity of a beacon signal.SOLUTION: The method includes generating reception data including an area ID of an area in which a receiver is disposed, a received radio wave intensity of a beacon signal, and a reception time; performing image analysis on image data of an imaged area to detect the presence or absence of a movable body in the imaged area, and identifying a movable body ID of the movable body when the movable body is detected; generating image analysis data including the area ID of the area, the presence or absence of the movable body, the movable body ID of the movable body when the movable body is present, and the imaged time; and determining the presence or absence of the movable body using the received radio wave intensity and specifying the presence area based on the strength of the received radio wave intensity when the presence area can be specified, and specifying the presence area based on the image analysis data when the presence area cannot be specified.SELECTED DRAWING: Figure 8

An imaging system (MIS), optionally a medical imaging system, with wireless communication capability and related method. The imaging system comprises a gantry (RG) rotatable around a rotation axis. The gantry includes a detector device (D) capable of recording, in plural spatial positions, measurement data in relation to a subject (such as a patient) (PAT) to be imaged. The system also includes a radio transmitter (TX) for generating a directed radio beam propagatable along a propagation axis to transmit the measurement data to a radio receiver (RX). The radio transmitter (TX) is arranged at the rotatable gantry and is operable so that the propagation direction intersects the rotation axis in a location that is situated away from the rotatable gantry.

A wireless communication system includes a transmitter, a plurality of passive substantially linear medium portions including one or more first portions and a second portion, one or more passive substantially nonlinear medium portions disposed proximate the substantially linear medium portions, and for each first portion, a dielectrically lossy or magnetically lossy first material disposed on the first portion. When the transmitter transmits first and second radio waves, the substantially linear and nonlinear medium portions receive the first and second radio waves and generate first and second signals propagating therein, where at least one intermodulation signal is generated in the one or more substantially nonlinear medium portions from the first and second signals, and the one or more first materials reduces the generation of the at least one intermodulation signal by at least 2 dB.

A weather data assimilation assistance device includes a wet delay calculator and a wet delay variance calculator. The wet delay calculator calculates a wet delay in a satellite line-of-sight based on observable data indicating an observable of a radio wave from a positioning satellite measured by a receiver to receive the radio wave from the positioning satellite and based on atmospheric delay data indicating an atmospheric delay in the satellite line-of-sight calculated based on a correction value for at least one of a satellite clock or a satellite orbit of the positioning satellite, and outputs data indicating the wet delay. The wet delay variance calculator calculates a variance of the wet delay based on the wet delay and a covariance matrix of the correction value for at least one of the satellite clock or the satellite orbit, and outputs data indicating the variance of the wet delay.

The invention belongs to the technical field of radio wave propagation, particularly discloses a complex path ASF prediction method based on parameter optimization three-dimensional FDTD, and aims to solve the problem of ASF prediction errors caused by neglecting a transverse diffraction effect in a two-dimensional method and the problem of poor precision caused by accumulated phase errors when a traditional three-dimensional FDTD method is applied to large-area ASF prediction. By means of three-dimensional terrain modeling, the electromagnetic propagation characteristics of the complex irregular terrain are accurately presented, and therefore the accuracy of the ASF prediction result of the complex path is remarkably improved. In addition, according to the complex path ASF prediction method based on parameter optimization three-dimensional FDTD, dispersion optimization parameters are introduced, phase accumulation errors are reduced, and therefore the calculation efficiency is improved while the precision is guaranteed. The method can provide an efficient solution for ASF prediction in a large-scale complex terrain scene, and is more suitable for popularization and application in engineering.

The invention belongs to the technical field of radio wave propagation prediction and deep learning, discloses an urban environment radio map prediction method, system and device and a medium, and solves the problem that radio map prediction is difficult and low in efficiency in a complex urban environment. The method comprises the following steps: setting corresponding simulation information by using various environmental element vector data of an urban scene, generating two-dimensional radio maps in different urban environments by using ray tracing simulation, forming a data set for deep learning network training and learning, and disassembling the urban environment into image channels capable of being independently expanded, different actual city scene features are simulated by increasing or combining different image channels, and rapid migration of a small sample new city scene radio map prediction model is achieved; the system, the equipment and the medium are used for implementing the method. Based on multi-channel input feature fusion, a data set is made through ray tracing, and radio map prediction requirements of low cost, low error, high efficiency and strong generalization are met through deep learning training.

The invention discloses a low-orbit satellite joint frequency offset estimation and channel equalization method in a high-speed moving scene, which comprises the following steps of: constructing a dynamic coupling state space model to realize joint estimation of frequency offset and channel parameters; associating a frequency offset change rate with the dynamic change of multipath time delay through a state transition equation; the association is based on relative motion parameters and radio wave propagation characteristics of the satellite and the mobile terminal; according to the method, state estimation is carried out by adopting a filtering algorithm, channel multipath sparsity constraint is introduced into the filtering algorithm, and satellite orbit parameters and navigation data of a mobile terminal are fused to serve as priori information, so that joint estimation of frequency offset and channel parameters is realized through a dynamic coupling state space model; the problem of parameter error accumulation in traditional separated processing is solved, and the estimation precision is improved; a pilot frequency-data dual-drive mechanism is combined with time-frequency orthogonal pilot frequency and data feedback, and the estimation real-time performance and the dynamic adjustment capability of the equalizer are both considered.

This base station of a 5G mobile communication system comprises a memory and a processor. The base station: performs, with respect to a first user device which is a user device included in the 5G mobile communication system, scheduling of transmission of a specific radio wave; performs, with respect to a second user device which is the user device and is different from the first user device, scheduling of measurement of power transmitted by the first user device; acquires a measurement result for the power measured by the second user device; shares the measurement result for the power measured by the second user device with a node controlled by a common host node; and acquires, from the node with which the measurement result for the power measured by the second user device has been shared, information on power of an interference signal arriving at the second user device.

In one embodiment, an apparatus performs receiving, via two different signal pathways, at least two different signals that are associated with different radio wave characteristics; changing the frequency of signal(s) to provide intermediate signal(s) with each having different frequencies; multiplexing the intermediate signals to allow signals to be transmitted together via a single wired connection; receiving a multiplexed signal via the single wired connection, the multiplexed signal including intermediate further signals having different frequencies, the intermediate further signals also being associated with differing radio wave characteristics; and separating the intermediate further signals into separate signals; changing the frequency of the further signals to provide further signals at a transmission frequency; and transmitting the further signals via the two signal pathways.

A technique for performing radio resource management is provided. As to a method aspect, a method performed by a radio node (100) for radio resource management, RRM, comprises a step of obtaining (202) environmental information for the radio node (100). The environmental information is indicative of a future state of one or more physical objects in an environment of the radio node (100). A propagation of radio waves in the environment depends on the one or more physical objects. The method further comprises a step of performing (206) or initiating to perform (206) the RRM. The RRM depends on the future state of the one or more physical objects in the environment of the radio node (100).

An electromagnetic radio wave medical imaging system, the system including: one antenna; transmission electronics; receiving electronics; receiving computing electronics, where the transmission electronics are structured to transmit an electromagnetic wave having an Orbital Angular Momentum wave-front thru the one antenna towards a target, where the Orbital Angular Momentum wave-front includes a vortex region, where the receiving computing electronics are structured to form a signal from a return wave of the electromagnetic wave; an image sensor integrated with the one antenna, where the system is designed to operate at a near field electromagnetic wave, where the system is designed to operate as an electromagnetic radio wave medical imaging system; and a scanner structure, where the scanner structure is configured to allow movement of the direction of the vortex region.

[Object]Provided are a radar apparatus that can prevent the leakage of interference waves from a radome, and an on-vehicle sensing system including the radar apparatus.[Solving Means]The radar apparatus of the present disclosure includes a substrate having an antenna structure in which a radiating portion for a radio wave is provided on a first surface, a radome disposed to face the first surface of the substrate, and a radio wave absorbing member disposed between the substrate and the radome, having an opening formed in a portion corresponding to the radiating portion, and including an insulator configured to absorb a radio wave.

The invention provides a target entity detection method and device, electronic equipment and a storage medium, and relates to the technical field of target detection. In the application, a first signal is generated based on a stimulated emission frequency of a target entity, and the first signal is sent to a target area; wherein the stimulated emission frequency belongs to a preset radio wave frequency range, and the first signal is used for detecting whether a target entity exists in the target area; receiving a second signal from the target area, and performing quantum state feature extraction on the second signal to obtain a feature extraction result of the second signal; if the feature extraction result comprises the quantum state identifier of the target entity and the second signal is determined not to be the first signal based on the feature extraction result, determining that the target entity exists in the target area; wherein the quantum state identifier is related to the stimulated emission frequency. Therefore, the detection accuracy of the target entity is improved.

This electronic device comprises a donor antenna, a service antenna, a core case in which the donor antenna and the service antenna are disposed, and an outer case which at least partially covers the core case. The electronic device relays radio waves by transmitting, from the service antenna, radio waves received by the donor antenna. The donor antenna and the service antenna are disposed such that a corner of the core case is therebetween. The outer case is configured to cover the donor antenna and the service antenna but not cover the corner of the core case.

The application relates to the field of gas pressure safety monitoring, and discloses a multi-scene gas pressure safety guarantee and remote monitoring system. The system comprises a dual-mode sensing module, a topology mapping module, a wave speed cooperation module, a fluid routing module, a routing locking module and a remote monitoring module. The wave speed cooperation module utilizes the difference between the propagation speeds of radio waves and pressure waves to send a preemptive wake-up frame, drives a downstream node to start sampling and backtrack to read a hardware cache before a pressure wave arrives, and realizes complete capture of a transient waveform. The fluid routing module constructs a high-reliability control slice containing only physically connected links and a full-through monitoring slice based on radio frequency based on fluid connectivity parameters. The routing locking module generates cascaded locking instructions bound to the control slice, prevents mis-transmission of the instructions beyond a physical breakpoint by using a routing overhead mechanism, and reports a state after a circuit is opened by the monitoring slice. The application effectively solves the problems of transient leakage of low-power devices and mismatch between wireless control logic and physical topology.

To provide a configuration capable of suppressing disturbance of a radio wave at a certain frequency caused by uneven reflection of the radio wave due to rotation in a rotary joint having a double coaxial structure.SOLUTION: A rotary joint 1 includes a first waveguide member 11, a second waveguide member 12, a center conductor, an inner tube conductor, and an outer tube conductor. A first waveguide path 91 and a second waveguide path 92 are formed in the first waveguide member 11, and a third waveguide path 93 and a fourth waveguide path 94 are formed in the second waveguide member 12. The inner tube conductor is disposed so as to cover the outside of the central conductor, forms an inner coaxial path that connects the first waveguide path 91 and the third waveguide path 93 together with the central conductor, and includes a first tube conductor and a second tube conductor that are arranged in the longitudinal direction, are rotatably coupled to each other, and are insulated from each other. The outer tube conductor is disposed so as to cover the outside of the inner tube conductor, and forms an outer coaxial path connecting the second waveguide path 92 and the fourth waveguide path 94 together with the inner tube conductor.SELECTED DRAWING: Figure 1

This product is a radio-controlled device that remotely operates self-propelled machines such as lawnmowers by emitting radio waves. As shown in the "Reference Diagram Showing Usage," this product is operated by gripping the device and operating the control unit, which is positioned diagonally upward and outward for ease of operation.

An electronic apparatus includes a chassis, a heat generating body provided in the chassis, an antenna configured to be provided in the chassis and be capable of receiving radio waves, an electronic part arranged to be aligned with the antenna within the chassis, and a cooling module configured to have a plate-shaped metal part and cool the heat generating body within the chassis. The metal part includes a shield wall interposed between the antenna and the electronic part.

To provide a position estimation apparatus that estimates a position of a mobile station in a hierarchy indoors.SOLUTION: A position estimation apparatus includes a computing section that acquires position information of a plurality of reference stations, each having a radio communication function and respectively installed on a plurality of hierarchies different in a height direction indoors, acquires signal strengths during respective communications between the plurality of reference stations and a mobile station, and estimates a position of the hierarchy of the mobile station indoors on the basis of the signal strengths.SELECTED DRAWING: Figure 1