141 results about "Mobile antennas" patented technology

Aspects of the subject disclosure may include, for example, obtaining data regarding interference detected in a received communication signal, and performing phase adjusting for one or more radiating elements of an antenna system such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.

The invention discloses a high-speed rail tunnel communication sensing integrated information transmission method based on a movable antenna, and belongs to the technical field of wireless communication, and the method comprises the steps: constructing a high-speed rail tunnel communication sensing integrated system architecture assisted by the movable antenna for a high-speed rail tunnel scene, and designing an information transmission protocol; mathematical modeling is carried out according to movable antenna model features and tunnel scene channel features, a communication transmission model and a sensing transmission model are fused, and a communication and sensing integrated information transmission model is established. Aiming at the problems that the communication stability is limited and spectrum resources are deficient in a tunnel scene, a movable antenna and communication sensing integrated technology is adopted, dual-function coordination of base station communication and radar sensing in the tunnel is realized, and the spectrum utilization rate is improved and the total communication transmission rate of a train is maximized on the premise of meeting a sensing interference power threshold value.

The invention provides a secrecy cabinet, an antenna control method and device and a storage medium. The secrecy cabinet comprises a cabinet body, at least one movement mechanism, at least one RFID antenna and a controller. The movement mechanism is fixed to the cabinet body, and the RFID antenna is fixed to the movement mechanism. When the movement mechanism moves, the RFID antenna can move in the confidential cabinet. The RFID antenna is used for transmitting a radio frequency identification signal, and the RFID tag stored in the confidential cabinet is identified through the radio frequency identification signal. The RFID tag is associated with a confidential item. And identifying the RFID tag to indicate that the confidential article associated with the RFID tag is stored in the confidential cabinet. The controller is used for controlling the movement mechanism, so that the RFID antenna is moved in the confidential cabinet, and radio frequency identification signals sent by the RFID antenna fully cover the internal space of the confidential cabinet. Thus, it is ensured that the radio frequency identification signals fully cover the interior of the confidential cabinet, all RFID tags in the confidential cabinet can be scanned, and omission is avoided.

The invention relates to the technical field of wireless communication technology, and provides a rate division multiple access communication method and system assisted by a movable antenna, and the method comprises the steps: firstly constructing a rate division multiple access communication model, the model comprises a base station equipped with a linear movable antenna array and a plurality of users, and the base station communicates with each user; in the model, a user is split into a plurality of clusters, and a beam forming vector corresponding to an inter-cluster public stream, a beam forming vector corresponding to an intra-cluster public stream and a beam forming vector corresponding to a user private stream are formed according to the split clusters; and constructing a maximized minimum user rate optimization model according to the rate segmentation multiple access communication model, disassembling the optimization model into three sub-models, and solving the three sub-models by using an iterative optimization algorithm based on internal and external double loops. According to the invention, through a two-layer rate segmentation multiple access mode, the mobile antenna is introduced to carry out channel reconstruction and the intra-cluster common stream is compensated, so that the maximization of the minimum user rate is realized, and the communication performance is improved.

The invention provides a method for assisting a movable antenna to realize secure communication by STAR-RIS, and relates to the technical field of wireless communication. According to the method, the safety and the rate of the system are maximized by jointly optimizing the beam forming of the base station, the position of the movable antenna and the STAR-RIS coefficient matrix. The method specifically comprises the following steps: constructing a downlink MIMO system and establishing a joint optimization problem; decomposing the joint optimization problem into three sub-problems by adopting an alternate optimization framework; respectively utilizing a particle swarm optimization algorithm and a weighted minimum mean square error method to be combined with a Majoritization-Minimalization algorithm to solve each sub-problem, and respectively utilizing the particle swarm optimization algorithm and the weighted minimum mean square error method to be combined with the Majoritization-Minimalization algorithm to solve each sub-problem; and alternately executing related steps until system security and rate convergence to obtain a solution of the joint optimization problem. By the adoption of the method, the safety communication performance of the system is remarkably improved, full-space coverage and precise beam regulation are achieved, the algorithm convergence is high, the solving efficiency is high, and the method is suitable for a downlink system with multiple users and multiple eavesdropping nodes.

The invention provides a wireless resource allocation method and device, electronic equipment and a storage medium, and belongs to the technical field of wireless communication. Coordinate variables for a movable antenna in a movable antenna constraint are replaced with auxiliary variables, and a penalty term containing the auxiliary variables and the coordinate variables is added to a resource allocation function; the method comprises the steps of obtaining a target resource allocation model, performing model decomposition on the target resource allocation model to obtain a first sub-model aiming at a wireless resource variable, a second sub-model aiming at a coordinate variable and a third sub-model aiming at an auxiliary variable, and performing model solution on the first sub-model, the second sub-model and the third sub-model to obtain a solution data set, and the solution data set is input into the target resource allocation model to obtain a model output result, the operation is stopped until the model output result obtains a minimum value, wireless resource allocation is performed according to the wireless resource value and the antenna coordinate value in the target solution data set, and the optimization solution difficulty of the wireless resource allocation problem is reduced.

The embodiment of the invention provides a cross-type movable antenna array, a communication system, a communication parameter optimization method and related equipment. The cross-type movable antenna array comprises a plurality of mutually parallel first sliding rails, a plurality of mutually parallel second sliding rails, at least one antenna unit and driving control equipment, the first sliding track and the second sliding track intersect to form a two-dimensional plane grid structure, and an antenna unit is arranged on the intersection point of the first sliding track and the second sliding track; when the driving control device receives the driving request of the target position, the driving control device is used for controlling the first sliding track and / or the second sliding track to slide and driving the plurality of antenna units to move to the target position, so that the hardware cost, the energy consumption and the maintenance difficulty of the movable antenna array are greatly reduced.

The invention relates to a mobile antenna communication system robust resource optimization method based on angle information uncertainty, and belongs to the field of wireless communication. The method comprises the following steps: constructing a mobile antenna communication system model, and establishing a system energy efficiency maximization resource allocation model based on bounded angle information uncertainty by considering base station transmitting power constraint, user rate constraint, channel uncertainty constraint and mobile antenna spacing constraint; a non-convex original problem is equivalently converted into a convex subproblem about base station beam forming and movable antenna positioning by using transformation replacement, Bukbach, exponential conversion, continuous convex approximation, an S process, a subgradient inequality, singular value decomposition and a block coordinate descent method; and solving a plurality of convex sub-problems by using the CVX to obtain an optimal beam forming matrix and a movable antenna position vector, namely an optimal resource allocation strategy. The energy efficiency of the mobile antenna system can be effectively improved, and compared with a traditional method, the communication outage probability can be effectively reduced.

The embodiment of the invention provides a non-orthogonal multiple access communication system optimization method based on a movable antenna, which is applied to computer equipment, and comprises the following steps: creating a channel model of a movable antenna communication system, creating a decoding strategy, and calculating the minimum reachable rate from a base station end to a plurality of user ends through the decoding strategy. The method comprises the following steps: establishing an optimization model of the minimum reachable rate, splitting an optimization problem of the minimum reachable rate into a plurality of sub-problems, respectively optimizing a pre-coding matrix, a decoding indication matrix and a position vector of a movable antenna of a base station end, and optimizing the pre-coding matrix and the decoding indication matrix of the base station end through an alternate optimization algorithm in an inner cycle, the method comprises the following steps: optimizing a position vector of a movable antenna through an improved Hereum algorithm in external circulation, realizing circulation optimization of a sub-problem through internal and external double circulation, obtaining an optimized decoding indication matrix, a pre-coding matrix of a base station end and the position vector of the movable antenna, and optimizing the performance of a movable antenna communication system. And the minimum reachable rate among the users is improved.

The invention discloses a reconfigurable intelligent surface-assisted mobile antenna direction modulation method and system, and the method specifically comprises the steps: building an optimization problem model on the basis of an active intelligent reflector-assisted large-scale multiple-input-multiple-output system; confidential information transmitted by a base station equipped with a movable antenna reaches a legal user and an eavesdropper through two main paths; under power constraint, maximum reflection coefficient constraint and movable antenna position constraint, the safety rate is maximized by designing symbols of legal users and eavesdroppers; in the transmitting end weight vector optimization stage, a compressed sensing method is used for converting the position constraint of a movable antenna into an l2 norm, and a transmitting end weight vector is obtained through the transmission rate which can be realized by a fixed eavesdropper and singular value decomposition; and the transmission rate which can be realized by the legal user is fixed, and an intelligent reflection surface shift matrix is obtained through singular value decomposition. According to the invention, the achievable safety rate is greatly improved.

The invention belongs to the technical field of wireless communication physical layer secure transmission, and relates to an RIS-assisted mobile antenna security ISAC system and a joint scheduling optimization method, the RIS-assisted mobile antenna security ISAC system comprises a base station, an RIS, an eavesdropper and a plurality of legal users, the base station is used for sending signals to the legal users, a radar senses the eavesdropper, and the RIS is used for assisting secure communication; the base station is a dual-function base station MA-BS; the base station is provided with a transmitting array and a receiving array of movable antennas, and the legal user and the eavesdropper are provided with single antennas; no line-of-sight link exists between the base station and the legal user and between the eavesdroppers, the base station points the beam to the RIS through beam forming, and the RIS carries out phase modulation on the beam and then points the beam to the legal user and the eavesdroppers respectively; the beam pointing to the eavesdropper is reflected from the eavesdropper, is subjected to RIS phase modulation, and is returned to the base station for sensing the position of the eavesdropper; according to the system disclosed by the invention, the safety communication performance between the base station and the user in different scenes is ensured by utilizing the high spatial freedom degree of the movable antenna.

The invention discloses a multi-dimensional resource allocation method and system of a mobile antenna assisted mixed NOMA (Non-Orthogonal Multiple Access). The method comprises the following steps: a base station takes the total unloading energy consumption of all users as a target function to construct an optimization problem of energy consumption minimization, and minimizes the total unloading energy consumption of all users by optimizing user unloading power, unloading time slots and mobile antenna positions of the users; setting an unloading time slot, user unloading power and an initial value of a movable antenna position of a user, and entering an iterative loop: giving the movable antenna position of the user, and jointly optimizing the unloading time slot and the user unloading power; giving an unloading time slot and user unloading power, and optimizing the position of a movable antenna of a user; and iteration is carried out until convergence, and optimal values of the unloading time slot, the user unloading power and the mobile antenna position of the user are obtained. According to the method, the unloading time slot, the user unloading power and the mobile antenna position of the user are jointly optimized, the unloading flexibility of the user is improved, and the unloading energy consumption of the user is reduced.

The invention relates to the technical field of navigation signal detection, and discloses a small portable navigation signal comprehensive detection system and method.The system comprises a building block type mobile antenna support, backpack type comprehensive detection equipment and a navigation equipment site evaluation system, the system is composed of a backpack type comprehensive detection host and an individual soldier handheld terminal, and rapid opening and comprehensive detection of navigation signals are achieved. The backpack comprehensive detection host integrates a battery, a power supply module, a high-performance signal processing board, a radio frequency channel and a medium-wave active antenna, adopts a high-performance battery and power supply management scheme and an advanced AC7Z020 core board for signal processing, and ensures high-precision and high-sensitivity detection. The system is further integrated with an electronic compass module to achieve a direction finding function, real-time data feedback and evaluation are achieved through Bluetooth communication between the individual soldier handheld terminal and the host, the detection convenience and reliability are greatly improved, and the system is particularly suitable for scenes such as field environments, emergency rescue and military actions.

The invention discloses a method and a system for optimizing antenna position cost of Internet of Vehicles based on a movable antenna, and the method comprises the steps: constructing an Internet of Vehicles model of a privacy protection federated learning architecture based on the assistance of an intelligent movable antenna, and enabling a base station to give corresponding compensation according to the total cost of vehicle users in a signal coverage range of the base station, establishing a target function for minimizing the compensation cost of the base station; further decomposing the objective function into two sub-problems, respectively adopting a proposed greedy vehicle user selection algorithm and an adaptive particle swarm optimization algorithm to solve and optimize parameters of the objective function, and in each round of federated communication, the base station obtains a selected vehicle user set and schedules the position of the intelligent movable antenna, so that the intelligent movable antenna is obtained. And the compensation cost of the base station is minimized. According to the method, the compensation cost of the base station is modeled, optimization of the compensation cost of the base station in the Internet of Vehicles is realized, the communication rate between the vehicle user and the base station is improved by scheduling the position of the intelligent movable antenna, and the communication time delay is reduced.

The invention relates to a GNSS relative differential positioning method for positioning a mobile antenna with respect to a reference antenna by computing phase differences between the signals received by these two antennas and originating from a plurality of satellites, comprising: processing the digitized signal (Src1) received by the reference antenna in a first loop (10) and processing the digitized signal (Src2) received by the mobile antenna in a second loop (20), each of the loops being subjected to the signal from frequency demodulation, code-demultiplexing, correlation and discriminant-computing operations, the first loop estimating the phase of the signal used to adjust the carrier frequency in the frequency demodulation for each of the loops, the second loop computing the phase difference between the two signals; and estimating the position of the mobile antenna based on the computed phase difference.

The invention provides a cooperative interference processing method for a movable antenna enabling and inductance integrated network. The method comprises the following steps: constructing an optimization problem under the movable antenna enabling and inductance integrated network; wherein the optimization problem is that the sum of the data rates of all the cells is maximized by alternately iteratively optimizing the transmitting beam forming of all the base stations and the position of the movable antenna, and the rate profile technology is utilized to depict the Pareto boundary between the data rates of the cells; decomposing two optimization sub-problems based on the optimization problem, and carrying out alternate iteration solution on the two optimization sub-problems until a total objective function of the optimization problem is converged; the first optimization sub-problem is used for optimizing transmitting beam forming of the base station under the condition that the positions of all the movable antennas are determined, and the second optimization sub-problem is used for optimizing the positions of the movable antennas under the condition that the transmitting beam forming of the base station is determined. According to the invention, the sum of data rates of all cells is maximized through transmitting beam forming and antenna position regulation and control, and the communication and sensing performance is improved.

The invention provides a communication coverage enhancement system based on cooperation of a movable antenna and an intelligent metasurface and an optimization method. The communication coverage enhancement system comprises a base station, a plurality of RIS systems and a plurality of target areas. The base station is equipped with an MA system for flexibly controlling the position of a transmitting antenna and executing active beam forming; the plurality of RIS systems are used for executing passive beamforming so as to cooperatively improve the communication performance of the MA system; in the embodiment of the invention, communication service is only provided for one target area at any moment, and the plurality of target areas are covered in sequence according to a polling sequence or a preset sequence, so that efficient resource scheduling and dynamic communication guarantee for each target area are realized. The adaptive capacity of the system to channel space characteristics is remarkably improved, and stable and reliable communication guarantee can be achieved even in a channel deep fading scene.

The invention discloses a 6DMA-assisted high-speed railway communication resource collaborative optimization method based on reinforcement learning, and belongs to the technical field of high-speed railway movable antenna communication resource scheduling. The 6DMA-assisted high-speed railway communication resource collaborative optimization method comprises the main steps of constructing a system model, designing a joint optimization problem, solving the joint optimization problem and the like. According to the invention, through a six-degree-of-freedom reconstruction radiation mode, compared with traditional MA / FAs, the spatial degree of freedom is further released, and blind area formation and double near-far effect can be significantly reduced; meanwhile, static precoding and step-by-step search are replaced by an active-passive beam + array surface motion linkage decision through the TTD3, end-to-end control is achieved, and the time delay requirement of the high-speed rail is met; in addition, the collaborative optimization mechanism gives consideration to exploration efficiency and convergence stability, so that the system can keep a link reliable, and the method has relatively high practical application value.

The invention discloses a covert communication method and system assisted by a movable antenna in a communication-inductance integrated network, and the system comprises an ISAC base station which is provided with Nt movable transmitting antennas and Nr fixed receiving antenna arrays; k communication nodes, each of which is configured with a single antenna and is used for receiving a communication signal sent by the ISAC base station; the point-like sensing nodes are used for receiving the sensing signals sent by the ISAC base station; the eavesdropping node is provided with a single antenna and is used for trying to detect a signal sent by the ISAC base station; according to the invention, the movable antenna array is deployed in the covert communication system, so that the space coverage limitation of a traditional fixed antenna system can be broken through, and the wide-area coverage and deep penetration capabilities of communication services can be improved. The mobile antenna array network significantly enhances the transmission efficiency and link robustness of covert communication through multi-dimensional degree-of-freedom cooperative regulation and control such as precoding vector optimization, three-dimensional space position dynamic configuration and the like.

The invention discloses a design of an electrically controlled movable antenna array, a multi-user communication method and an electrically controlled movable antenna array, and the method comprises the steps: constructing an electrically controlled movable antenna through controlling the state of a radio frequency assembly between pixel antennas in a reconfigurable pixel antenna; a plurality of electrically-controlled movable antennas are combined and connected with radio frequency links one by one, and a partially-connected electrically-controlled movable antenna array is constructed; an electrically-controlled movable antenna is expanded and is connected with a radio frequency link through a switching network, so that a full-connection electrically-controlled movable antenna array is constructed; under the condition that the transmitting power constraint and the hardware constraint are met, antenna selection of partially-connected and fully-connected electric control movable antenna arrays and corresponding baseband multi-user beam forming are designed, and the multi-user communication and rate are maximized. According to the invention, the position of the antenna array can be rapidly adjusted through electric control, a rapidly changing channel environment can be effectively dealt with, and the performance of multi-user communication is improved.

The embodiment of the invention provides a signal transmission method and device of a movable antenna array and electronic equipment, and belongs to the technical field of antenna communication. The method comprises the following steps: determining a plurality of monitoring parties and at least two target receiving ends; one target receiving end is in a near-field communication scene, and the other target receiving end is in a far-field communication scene; constructing a communication model based on the movable antenna array, the plurality of monitoring parties and the target receiving end; performing reachable rate analysis and concealment analysis based on the communication model to obtain reachable rate related data and concealment related data, and then constructing a target optimization problem; the position of each movable sub-array of the movable antenna array is adjusted, power distribution of the movable antenna array is adjusted, a target optimization problem is processed, target optimization information is obtained, and therefore signal transmission operation of the movable antenna array is adjusted. According to the embodiment of the invention, joint optimization of the covert communication rate and the concealment can be realized under the condition of a mixed field domain channel.

A near-field communication (NFC) reader is integrated with a display panel in a passenger cabin of a vehicle by constructing a hidden antenna of the reader into a portion of the display panel. The display comprises a touchscreen display providing a display surface coincident with a touch-sensitive input detector. A trigger monitor is configured to detect a user activity by a user which is indicative of a potential for the user to attempt pairing of a mobile NFC device with the hidden antenna. A positioning messenger is configured to generate a depiction on the display surface indicating a region to be covered on the display surface by the mobile NFC device to align a mobile antenna on the mobile NFC device with the hidden antenna. The NFC device may be a smartphone, a key fob, or an NFC transponder card.

This invention discloses a communication energy efficiency optimization method assisted by a smart metasurface and a movable antenna. This method is applicable to a downlink wireless communication system consisting of a base station, a smart metasurface, and a user terminal equipped with a movable antenna. To improve the energy efficiency of this communication system, this invention proposes a joint optimization method for base station beamforming, RIS reflection coefficient, and MA spatial location. Specifically, considering the energy consumption of base station transmission signals and MA movement, the proposed method constructs a communication system energy efficiency maximization problem under constraints of user communication service quality and MA movement range, and designs an alternating optimization algorithm based on continuous convex approximation. Simulation results show that, compared with traditional fixed antenna schemes and system throughput maximization schemes, the proposed scheme can effectively improve the system's energy efficiency.

The integrated communication Internet of Things antenna comprises a preparation unit and a discharging unit, the preparation unit comprises a bottom plate, a supporting plate is fixed to the bottom plate, a tank is fixed to the supporting plate, an injection molding gun is installed at the bottom of the tank, and two first vertical plates are fixed to the top of the bottom plate. Due to the first annular end face gear, the second annular end face gear can rotate with the antenna mold as the axis, synchronously drive a connecting rod and a rotary disc to rotate and further drive a cylinder, a limiting plate and a prism to rotate, and then the antenna mold is driven to rotate; when the antenna mold rotates, the antenna mold is driven to move towards the interior of the first barrel when the semicircular plate abuts against the extrusion block, the spring is extruded when the antenna mold moves, the antenna mold is driven to move reversely under the resilience force of the spring after the semicircular plate and the extrusion block are staggered, and the operation is repeated, so that the antenna mold vibrates up and down in the first barrel; and the antenna mold rotates in an inverted direction, so that demolding of the antenna is facilitated.

The application discloses a kind of wideband signal-oriented distributed movable antenna layout optimization method, comprising: based on swarm intelligence algorithm, antenna layout scheme is iteratively optimized until reaching iteration stop condition, the best fitness of population corresponding antenna layout scheme is regarded as the optimal scheme of antenna layout output;Wherein, the fitness of population is determined according to the wideband cumulative Cramer-Rao bound of its corresponding antenna layout scheme.The present application can directly construct the bottom mapping relationship between continuous position variable and wideband signal direction finding error lower limit by introducing wideband Cramer-Rao bound as fitness function.Because the index itself represents the theoretical minimum direction finding error of antenna layout, it can accurately quantify the spatial spectrum coupling effect of full frequency band;As fitness function, it can make the optimization directly towards the most essential optimization goal, ensure that the output physical array theoretically approximates the wideband direction finding physical limit under this degree of freedom.

A system is disclosed and comprises a mobile platform, an antenna configured to receive a signal from a remote source in a first direction, a movement mechanism mounted to the platform, wherein the antenna is mounted to the movement mechanism, the movement mechanism being configured to move the antenna relative to the platform, and a controller configured to: generate a local signal, determine a component of motion of the antenna in the first direction, correlate the local signal with the received signal to provide a correlation signal, and motion compensating at least one of the local signal, the signal from the remote source, and the correlation signal based on the determined motion of the antenna in the first direction.

The invention relates to the technical field of mobile communication, and particularly discloses an optimization method and system for an IOT network assisted by a movable antenna unmanned aerial vehicle, which maximizes long-term uplink throughput under physical constraints and energy constraints by jointly optimizing the trajectory of the unmanned aerial vehicle and the discrete orientation of a movable antenna surface, and improves the network performance. And a future ground equipment motion track or a channel state does not need to be predicted. According to the method and the system, an optimization problem is decomposed into time slot level sub-problems, the position of the unmanned aerial vehicle is optimized through a discretization strategy of structure perception, and the orientation of a movable antenna surface is configured by adopting a projection-free conditional gradient method, so that the overall optimization problem is solved step by step. A simulation result shows that compared with a reference scheme, the method and the system provided by the invention have the advantages that the uplink throughput is remarkably improved in a dynamic IoT environment, and meanwhile, the long-term energy consumption of the UAV is always controlled within a budget range.

The invention particularly relates to an unmanned aerial vehicle covert communication resource optimization method for flexible position antenna enabling. The method comprises the following steps: constructing a joint optimization problem of transmitting beam forming, an unmanned aerial vehicle track and a movable antenna position; a joint optimization problem of transmitting beam forming, an unmanned aerial vehicle track and a movable antenna position is decomposed into three sub-optimization problems, and the three sub-optimization problems include that the transmitting beam forming of the unmanned aerial vehicle is optimized by fixing the unmanned aerial vehicle track and the movable antenna position; the trajectory of the unmanned aerial vehicle is optimized by fixing the transmitting beam forming of the unmanned aerial vehicle and moving the position of the antenna; the position of the movable antenna is optimized by fixing transmitting beam forming of the unmanned aerial vehicle and the track of the unmanned aerial vehicle; and solving the three sub-optimization problems by adopting an alternating optimization algorithm to realize the solving of the joint optimization problem of the transmitted beam forming, the unmanned aerial vehicle track and the movable antenna position. The method provided by the invention has better effectiveness, wider universality and better covert communication performance.

The invention discloses an MA-assisted RSMA-RIS system neutralization rate optimization method, and the method comprises the steps: firstly giving an algorithm for updating the position of a mobile antenna (MA), and then giving an algorithm for obtaining the optimal sum rate of a system based on AO iteration. According to the method, the problems of precoding design, antenna position, RIS reflection matrix design and public rate segmentation scheme design of the multi-user downlink RSMA-RIS system under MA assistance can be solved, the optimal solutions of the system and the rate are obtained through iteration, and the optimal solutions can be rapidly converged.

An improved electromagnetic field generating antenna is compatible with fluoroscopic imaging and can be placed under, above or anywhere around the patient. The antenna includes one or more antenna elements laid out on a single or multi-layer PCB with current conducting metal traces used for creating electromagnetic fields for tracking sensors. An antenna enclosure is made with a polymer or other non-conductive material. The antenna does not have to be moved for allowing medical imaging during various procedures. An X-ray filter may be made out of similar sub-components as a full antenna assembly with the sole purpose of reducing the radiation dose to the patient during medical procedures without negatively affecting the image quality.