281results about How to "Eliminate Interfering Signals" patented technology

The embodiment of the invention discloses an inter-cell interference suppression method, a system and base station and a user terminal, relating to communication filed. The invention solves the problem of too much network communication resource occupation caused by a great amount of scheduling information required to be transported among cell base stations. The inter-cell interference suppressionmethod comprises the following steps: determining an interference cell; acquiring the scheduling information of an interference terminal meeting a terminal constraint condition in the interference cell; and carrying out interference suppression operation on user terminals meeting the terminal constraint condition in the original cell according to the scheduling information of the interference terminal. The technical scheme provided by the embodiment of the invention can be applied in 3G network and next generation wireless network.

The invention discloses a wrist watch type multi-parameter biosensor and relates to a self-adaptive detection method for physiological parameters and a multi-parameter intelligent monitoring wrist watch by the adoption of the method. The method comprises the steps that (1) human physiological parameter signals are collected; (2) the human physiological parameter signals are subjected to self-adaptive wavelet decomposition, and feature predictors and updaters are selected point by point in the decomposition process; (3) waveform analysis is conducted, interference signals in the decomposed signals are eliminated, and human physiological parameter signals without interference are obtained. The monitoring wrist watch comprises a base body, wherein the base body is provided with a central processing unit, a physiological parameter sensor used for collecting the human physiological parameter signals and various other sensors. The central processing unit processes data by the adoption of a self-adaptive wavelet decomposition method to obtain the human physiological parameter signals without interference. The wrist watch type multi-parameter biosensor effectively solves the problem of instability caused by large contact resistance generated when a daily wearing mode is adopted. The wrist watch type multi-parameter biosensor is convenient to use and can collect various human physiological signals, movement signals, environment signals and the like in real time.

The invention discloses an acoustic signal based device and method for detecting gas pipeline leakages. The detection device comprises an acoustic sensor group, a signal conditioner, an analog-to-digital converter, a data transmission medium and a central control computer. The detection method comprises that acoustic sensors are installed on a pipeline to be tested to collect signals, collected acoustic signals are subjected to signal conditioning through the signal conditioner, then voltage signals are converted into digital signals through the analog-to-digital converter, converted digital signals are transmitted to the central control computer through the data transmission medium, and an acoustic signal display, filtering, feature extraction and leakage judgment program which is written through LabVIEW software is installed in the central control computer. The device and the method have the advantages of being low in cost, high in device sensitivity, high in adaptability and the like.

The invention discloses a signal energy synchronous transmission relay transmission method in physical layer safety communication. The method comprises the following implementation steps that: 1) a source node transmits an energy signal and calculates an optimal energy collection time scale alpha<H>, and an unreliable relay node and a destination node collect energy; 2) in a first (1-alpha<H>)T/2 time slot, the source node transmits an information signal x<s>, the destination node transits an interference signal x<z>, and the unreliable relay node receives the signals; 3) in a second (1-alpha<H>)T/2 time slot, the unreliable relay node forwards the received mixed signals, and the destination node receives the signals; 4) the destination node performs adaptive interference cancellation for the mixed signals forwarded by the unreliable relay node, and performs information detection on the signals of which interference is cancelled. The method provided by the invention can effectively prolong network service life of a relay network, and has low implementation complexity and high transmission safety, thus, the method can be used for a physical layer safety relay collaborative communication system.

The invention relates to an adaptive interference cancellation method for a radar jammer. The adaptive interference cancellation method comprises the following steps: acquiring an external signal d received by a detection antenna on the radar jammer in real time, simultaneously acquiring an interference signal which is generated in the radar jammer and is not transmitted by a transmitting antenna of the radar jammer and using the interference signal as a reference interference signal J; then conveying the external signal d and the reference interface signal J to an adaptive filter to carry out adaptive interference cancellation. According to the adaptive interference cancellation method, an active digital adaptive cancellation technology is adopted; related cancellation principles are utilized; a convergence step size is regulated; compromise of a convergence rate and convergence stability in an adaptive interference cancellation algorithm is effectively realized; finally, the interference signal entering the detection antenna can be effectively eliminated and a useful detection signal is obtained.

The present invention discloses a container sorting system capable of increased sorting efficiency. The present invention discloses a device in which the distance is shortened between detection and ejection of containers being sorted by reflective infrared radiation, transmission infrared radiation, or both. The present invention also includes a method of operating such device.

The invention belongs to the technical field of mass spectrographies, and relates to an ion transmission system for an inductively coupled plasma mass spectrometry. The ion transmission system comprises an ion sampling cone, an interception cone, an extraction lens, an ion deflecting electrode and ion focusing lenses, wherein the centers of all the parts are on coaxial horizontal lines; space electric field distribution is generated under a DC voltage; ions deflect, focus and are transmitted under the action of the electric field; photons and neutral particles in a sample are free from the action of the electric field, transmitted linearly, and blocked while meeting the ion deflecting electrode; electrified ions are guided by the electric field, bypass the ion deflecting electrode, and focus into an ion beam under the action of the electric field of the focusing lenses, and then are transmitted to a mass analyzer. The ion transmission system has the advantages that the structure is simple; the use is convenient; interference signals generated due to the entering of the photons and the neutral particles can be removed effectively; the ion transmission efficiency and the sensitivity of the inductively coupled plasma mass spectrometry are improved.

The invention discloses a physical layer network coding and design method for a bidirectional relay channel of a cellular system, which is characterized by comprising the steps as follows: a base station precodes sent signals and then sends to a relay node, and at the same time, users also respectively send respective information to a relay end; the relay node receives the information sent by the base station and users and performs physical layer network coding hybrid, the signals subjected to physical layer network coding are precoded so as to ensure that the signals received by one user can not be disturbed by other users, and the signals are forwarded; and the users and base station respectively receive the signals forwarded by the relay node, and disturbing signals in respective received signals are respectively eliminated so as to perform demodulation. Compared with the existing technical method of time division multiplexing bidirectional relay physical layer network coding, the invention greatly reduces the time slot required for completing uplink/downlink communication transmission, supports the communication of more users and improves the outage probability of each user and the ergodic capacity of the overall system.

The invention mainly belongs to the technical field of satellite navigation, and particularly relates to a method for realizing satellite navigation anti-interference and attitude measurement based onan array antenna. The attitude measurement method comprises the following steps: a satellite navigation array antenna is arranged to receive a satellite navigation radio frequency signal; each antenna array element in the satellite navigation array antenna corresponds to one radio frequency front end channel, the radio frequency front-end channel processes the radio-frequency signals received bythe antenna array element to generate a digital baseband signal; an anti-interference processing module is used for carrying out self-adaptive array signal processing on the digital baseband signals,and the interference is eliminated to form a beam null notch and interference is eliminated; the carrier phase position of the satellite navigation signal received by each antenna array element is recovered, and the attitude of the array antenna is calculated through an array antenna attitude measurement model. According to the method, the array antenna is used for carrying out anti-interference processing and attitude measurement operation on the received signals, and the satellite navigation attitude measurement function can be realized in an interference environment.

The invention discloses an interference elimination method based on effective channel parameter semi-orthogonal, comprising the steps of: calculating an effective receiving channel parameter of a user side and regarding the parameter as the basis for the selection of a semi-orthogonal user by a base station according to effective channels and cross channel parameters fed back by a user. After selecting the semi-orthogonal user of the effective receiving channel parameter by the base station, double-layer pre-coding vector design is carried out by the base station so as to eliminate the interference among cells and in the cells. Through the interference elimination method based on effective channel parameter semi-orthogonal, the average user capacity can be improved and the computation time complexity for the selection of the semi-orthogonal user is greatly reduced.

The parallel-coupled-resonator coupled line filter with open-and-short end, comprises an input port for receiving an input signal; a bent first resonator and a bent third resonator where their both ends are open circuited; a second resonator whose both ends are shorted to ground; and an output port for outputting signal. Wherein, designing cross coupling between the third resonator and the first resonator to obtain a steep frequency response and reduce the interference of the image signal.

The invention discloses an electrochemical analyte sensing system capable of self-correcting interference signals. The system comprises a sensor, a direct-current voltage power supply component, a current measuring component, an alternating-current impedance measuring component, a circuit changeover switch, a controller, a data processing and communication component and a power supply. A blank electrode with the size the same as that of a working electrode is added, and the interference signals are eliminated by means of signal subtraction. The alternating-current impedance measuring component is added, and the working state of the sensor is judged according to system impedance outputted by the alternating-current impedance measuring component. The influence of interferents and measuring environment change on analyte signal generation can be effectively eliminated, and effectiveness and accuracy of measuring signals are ensured by the sensor during working.

A method for selecting wire of single phase earthing fault in small current earthing system measures zero sequence current increment of each circuit at bus side before and after fault and selects wire according to principle that zero sequence current increment of fault circuit is equal to negative value of nonfault circuit zero sequence current increment sum.

The invention discloses a method for measuring trap parameters in an XLPE cable based on a polarizing-depolarizing current test. In the method, firstly, detrapping current is extracted from the polarizing current, then, staged linear fitting is executed for the detrapping current, moreover, fitting parameters A<m>. Tau<m> and Tau<m> are used to represent trap parameters, such as trap charge density and trap depth, in the XLPE current, and consequently, trap charge density and charge accumulation conditions of the XLPE cable insulation are reflected. The method provided by the invention can guarantee accuracy and effectiveness of trap parameter measurement; moreover, in the method, staged linear fitting is executed for the detrapping current, fitting effect is excellent, various interference signals are eliminated, thus, accuracy of trap parameter measurement is improved further; moreover, the method is based on a PDC nondestructive test method, has no high requirement on test apparatuses, is simple to operate, has no damage to cable insulation, has very high practicability in the aspect of acquiring XLPE cable trap characteristics, and is suitable for being generalized and used insuch field.

The invention provides an ignition control device, which comprises a bridge rectifier circuit, a power management circuit, a logic control circuit, a clock circuit and an ignition control circuit, wherein, the ignition control circuit comprises a charge control switch, an RC low pass filter, a safety discharge switch and an ignition control switch; and the RC low pass filter comprises a current-limiting resistor and a storage capacitor. The invention further provides the control flow of the ignition control device, which comprises an initialization control flow, an ignition control flow and other steps, wherein, the ignition control flow is carried out according to the following steps: the logic control circuit transmits a control signal, disconnects the safety discharge switch and closes the charge control switch; the logic control circuit starts electronic delay after reaching the desired charging time; and the logic control circuit transmits the control signal and closes the ignition control switch after reaching the desired delay time. Therefore, the energy for initiation can be controlled safely and reliably, thereby improving the ignition safety.

The invention discloses a radioactive spectrum identification method comprising the following steps of: carrying out filtration, dimension reduction and classified treatment on measured energy spectrum in radioactive measurement, extracting feature vectors of energy spectrums as samples, and obtaining the GMMs (Gaussian Mixture Models) of all kinds of feature vectors through training; solving the feature vectors of energy spectrums to be identified and solving the class conditional probability density of the feature vectors according to the GMMs; and then carrying out decision classification to finish energy spectrum identification. The radioactive spectrum identification method has high energy spectrum identification accuracy rate and is an effective method for radioactive spectrum identification.

A received signal whose frequency band is spread in a spread spectrum system is subjected to fast Fourier transform processing to be transformed to a frequency spectrum, based on this frequency spectrum, a narrow-band interference signal is detected and eliminated, and then by subjecting the received signal to inverse FFT, the received signal from which the interference signal is eliminated is obtained, whereby the narrow-band interference signal can be eliminated from the received signal by a simple configuration.

The invention relates to a cement enterprise carbon emission real-time on-line monitoring management system. A cement enterprise carbon emission real-time on-line monitoring management system comprises a single-chip microcomputer, which is in a wired connection with a temperature and humidity sensor, a gas flow sensor, a pressure sensor, a carbon dioxide concentration monitor, a carbon monoxide concentration monitor, and is used for analyzing and processing received data; an information management terminal, which is in the wired connection with the single-chip microcomputer, and is used for storing operation data; a filtering module, which is in the wired connection with the single-chip microcomputer, and is used for eliminating interference signals; a data processing module, which is in the wired connection with the single-chip microcomputer by a data acquisition analysis module, and is used for analyzing, processing, and counting the monitoring data; and a cloud server, which is in a wireless connection with the single-chip microcomputer by a GPRS wireless network, and is used for data transmission and exchange. The cement enterprise carbon emission real-time on-line monitoring management system is advantageous in that various sensors and various monitors are used for real-time on-line monitoring of carbon emission, and the monitoring data is accurate, and the confusion and missing problems of the acquired data are prevented.