4013 results about "Interference resistance" patented technology

A system is disclosed for generating and transmitting data signals to the surface of the earth while drilling a borehole, the system operating by generating pressure pulses in the drilling fluid filling the drill string. The system is designed to maximize signal strength while minimizing the probability of jamming by drilling fluid particulates. The system uses a rotary valve modulator consisting of a stator with flow orifices through which drilling fluid flows, and a rotor which rotates with respect to the stator thereby opening and restricting flow through the orifices and thereby generating pressure pulses. The flow orifices with the stator in a "closed" position are configured to reduce jamming, and to simultaneously minimize flow area in order to maximize signal strength. This is accomplished by imparting a shear to the fluid flow through the modulator, and minimizing the aspect ratio and maximizing the minimum principal dimension of the closed flow area. A preferred embodiment and three alternate embodiments of the modulator are disclosed.

A touch sensitive control system for controlling a device includes a touch sensitive interface and a controller configured to communicate with the touch sensitive interface. The control system detects user manipulation of the touch sensitive interface with a touch detection sequence executed by the controller. The touch detection sequence determines a moving average of baseline signal level readings of the touch sensitive interface over time. The touch detection sequence compares a current baseline signal level reading to the moving average of baseline signal level readings, thereby detecting an interference event associated with an unexpectedly high current baseline signal level reading which could otherwise lead to a false touch detection.

An interference resistant infrared receiver and extension system is disclosed. A receiver in accordance with the present invention comprises at least one infrared photodetector configured to detect impinging infrared light of a desired wavelength, an amplifier, coupled to the at least one infrared photodetector, for amplifying an electrical signal generated by the at least one infrared photodetector, and a bandpass filter, coupled to the at least one infrared photodetector, wherein the desired impinging infrared light passes through the bandpass filter before impinging on the at least one infrared photodetector, wherein the bandpass filter is configured to pass desired impinging infrared light and block undesired impinging wavelengths of light.

The invention relates to a nuclear magnetic resonance ground water detection system with reference coils and a detection method. All-waveform data of nuclear magnetic resonance signals in a transmitting/receiving coil and noise signals in the reference coils are synchronously acquired through a plurality of paths of A/D acquiring units; the distribution of optimal positions and quantity of the reference coils is realized through calculating the maximum correlation of the noise signals and the nuclear magnetic resonance signals, which are acquired by the reference coils; and under the condition of unknown signal and noise statistical properties, noise in the nuclear magnetic resonance signals obtained by the transmitting/receiving coil is maximally offset by adopting a variable step adaptive algorithm, the nuclear magnetic resonance signals are extracted under the interference of multi-field source complex strong noise, thus the problems of multiple interferences of nuclear magnetic resonance detection near villages and in neighboring regions of cities and difficulty of separating multiple kinds of interference noise data are effectively solved, the interference resistance of instruments is improved, and a reliable detection device and method are provided for searching underground water near villages and in neighboring regions of cities.

The invention discloses a smart home voice control system combined with a video channel and a control method thereof. The system comprises a gesture detection module, a human face detection module, a recognition system module, a command judgment module and a command display and confirmation module which are sequentially connected. The recognition system module comprises a lip language part and a voice part, wherein the lip language part comprises a human face tracking and positioning module, a lip language video input module and a lip language recognition module which are sequentially connected; and the voice part comprises a voice input module and a voice recognition module which are sequentially connected. By detecting control gestures and recognizing human faces and lip language information to supplement the recognized voice information, the accuracy of control commands is improved and the feasibility of using voices to control a smart home is increased. The smart home voice control system combined with the video channel has very strong interference resistance, can be widely used for various complex environment modes and is particularly suitable for the situation of high noise because of a great number of people in home environments.

The invention provides a method for controlling opening of an electronic expansion valve in a central air-conditioning unit, which comprises the following steps of: 1, changing the opening of the electronic expansion valve according to difference of T suction and T target; and 2, after the opening of the electronic expansion valve is changed, when a compressor in the central air-conditioning unitoperates to a first preset time, if T exhaust is not in a preset range of exhaust superheat degree, changing the T target and turning to the step 1, otherwise setting T target to be T0 target and returning to the step 1, wherein T suction refers to an actual suction superheat degree of the compressor in the central air-conditioning unit, T exhaust refers to an actual exhaust superheat degree of the compressor, T target refers to an actual target suction superheat degree of the compressor, and T0 target refers to an initial target suction superheat degree of the compressor. By the control method, interference resistance of the central air-conditioning unit is improved, and the reliability of the central air-conditioning unit is improved.

A wireless sensor network system using GMR magnetic sensitive technology to detect vehicle information of the invention consists of two GMR sensor detecting end machines and a wireless receiving end machine. The two GMR sensor detecting end machines are connected with the wireless receiving end machine. The detection method of the invention detects information such as vehicle speed, vehicle length, driving direction, vehicle flow, lane occupancy ratio, etc., according to change data of the surrounding ground magnetic field sensed by the GMR sensor when the vehicles pass. The wireless sensor network system is characterized in having high precision of detecting speed, adaptability to various roads, low cost, convenient maintenance and high anti-interference ability and causing small destroy to road surface, etc.

The present invention relates to a transmission system with interference avoidance capability, which includes a transmission apparatus and a receiving apparatus. The transmission method thereof receives first data by means of an interference-processing module of the transmission apparatus and adds a plurality of extension data to the first data to produce second data for replacing a plurality of data corresponding to an interfered band in the second data with zero data, and then producing transmission data. The transmission data is converted to a radio-frequency signal by a transmission-processing module and transmitted to the receiving apparatus. Thereby, signal interference can be prevented by avoiding spectrum overlap regions.

The invention discloses an indoor robot navigation device which is characterized by comprising a circuit board, wherein a motion control module, a navigation and location module, a map management and path planning module, an image acquisition and processing module, a safety module and a man-machine interaction management module. The invention also provides an indoor robot navigation technology. The technology is characterized by comprising the following steps of: (a) establishing a map and planning a motion path of the robot; (b) refining a area and setting a visual signpost; (c) acquiring and processing the visual signpost, and performing motion location and correction; (d) storing and querying area and signpost information. The device has the advantages of autonomous navigation, high interference resistance capacity, zero track movement and the like, and the problem that most of the conventional navigation modes are low in positioning precision is solved through visual positioning correction.

The invention belongs to the technical field of two-dimensional code identification, and provides a rapid positioning and identifying method based on two-dimensional code decoding. The method comprises the following steps: performing median filter processing on an entire image; scanning the image, judging whether or not a two-dimensional code exists in the image, and if so, acquiring a two-dimensional code regional coordinate; intercepting a two-dimensional code image; performing adaptive binarization processing; performing connected area disposal on black pixel points; screening four boundaries; converting the coordinate system of the image into the coordinate system of the two-dimensional code; projecting the two-dimensional code under a new coordinate system to obtain the directivity, real boundary length and coordinate of the two-dimensional code and the barycentric coordinates of black-white blocks; judging the gray values of the black-white blocks to obtain a two-dimensional code information matrix; and acquiring decoding information. The method can adapt to various working conditions, and has the advantages of high contrast, high interference resistance and low investment cost. Automatic positioning and identifying functions can be finished by only one set of industrial camera and light source; high working efficiency is achieved; and the production requirement of an assembly line is met to the maximum extent.

The invention provides a road traffic sign automatic identification and management system based on deep learning, wherein the system is used for the field of environment perception technology of a smart vehicle. The system comprises a traffic sign acquisition module, a traffic sign identification module and a traffic sign management module. The traffic sign acquisition module acquires a video which comprises the traffic sign and performs matching on each image frame and latitude-and-longitude of equipment in acquiring the image. The traffic sign identification module performs functions of processing the input image, performing positioning detection on the traffic sign, acquiring a candidate area which comprises the traffic sign, and performing classification identification on the traffic sign. The traffic sign management module transmits traffic sign and latitude-and-longitude information to a traffic management department, thereby determining whether placement of the traffic sign is reasonable and performing corresponding adjustment. The road traffic sign automatic identification and management system has advantages of large number of kinds of identified traffic signs, high precision, high real-time performance, etc. The road traffic sign automatic identification and management system further has beneficial effects of reducing effect of factors such as illumination change to image identification, improving interference resistance, and obtaining high identification accuracy and low error identification rate.

The invention provides a method for detecting gestures. The method includes steps of detecting a predefined motion mode to determine a region-of-interest to be detected; detecting in the region-of-interest according to a scheme of a multi-scale sliding window, extracting local mean features from skin color membership images based on window images at first, classifying the features through a pre-trained Ada-Boost classifier, further extracting feature points on the basis of a gray-scale image of the window images processed via the Ada-Boost classifier, and then classifying the point-pair features through a random forest classifier; and clustering different types of target gesture windows and outputting accurate positions and shapes of the gestures. The invention further provides a system for detecting the gestures. The method and the system for detecting the gestures are simple, rapid and stable in implementing, and have the advantages of real-time performance, interference resistance, high identification precision and the like.

The invention discloses a dual-redundancy steering engine controller, which belongs to the technical field of aviation flight control. A central control unit is a DSP chip digital signal processor, and PWM signals output by a plurality of paths of output ports of the central control unit are isolated by a photoelectric isolation unit, and then are divided into two groups and are input into a first set of power drive unit and a second set of power drive unit which consist of power drive chips and H bridge circuits and have same circuits respectively; drive power supplies of the two sets of power drive units and the voltage output to a steering engine (M) are switched by a fault switching unit controlled by the digital signal processor; a steering engine signal conditioning unit consisting of a steering engine current conditioning unit and a steering engine position conditioning unit is connected between the steering engine and an input end of the digital signal processor; and an RS422 serial port communication interface circuit unit is arranged between the digital signal processor and a host computer. The dual-redundancy steering engine controller has the advantages of simple structure, high control accuracy, good system stability, strong interference resistance, high reliability, low development cost and the like.

The invention discloses a network netting and a routing method of a Bluetooth wireless sensor, which combines sensor network technique and Bluetooth technique and makes full use of the matured physical layer, MAC technique and anti-interference capacity of Bluetooth network when the sensor nets network, so as to lead the system to conveniently and rapidly net the network. A designed Bluetooth scatter net takes the practical use of a wireless sensor network into consideration when netting and uses a tree topology. The netting consists of three stages: the selection of a root node, the forming of a root piconet and the expansion of the network. By adopting the netting method based on that the energy can be predetermined and the service time of the network can be prolonged, and under the requirement of emphasizing the longest service life of the network, each piconet of the formed wireless sensor network is left with vacant positions and backup nodes, so as to lead the formed network to have better reliability, flexibility and self-recoverability to satisfy the situations that partial nodes can be added on, moved and leaves the network, etc. The routing information is interacted when the system is net, and when the network netting is completed, the routing information tables of all the nodes are built simultaneously. When the network is operated, a low-power respiratory mode of the Bluetooth network and the transmitting and sensing information of the network periodicity are used for prolonging the life service of the whole network.

The invention discloses a tip clearance measurement method based on all-fiber tip timing. The method comprises the following steps: converting measurement on length measurement in a triangle method into measurement on a tip timing signal; adopting two fiber bundle type timing sensors, and enabling emission fibers in the timing sensors to emit two beams of auto-collimation emergent light with different wavelengths; enabling receiving fibers in the timing sensors to receive moment signals when leaves approach and leave a measurement region; monitoring the rotating speed of a rotor in real time by a rotating speed synchronization sensor; performing high-speed signal acquisition and circuit module processing on all the sensor signals, and reversely calculating a distance between the end face of each sensor and each leaf tip by an upper computer through a math model. According to the tip clearance measurement method, a clearance value is ingeniously converted into a tip timing signal relevant to the clearance value, so that a measurement system is irrelative to most environmental factors such as the leaf and electromagnetic interference, and the interference resistance and the clearance measurement precision of the system are improved.

The invention relates to a resonance miniature electric field sensor. The sensor comprises a substrate, an exciting electrode with a comb structure, a vibration sensitive electrode with a comb structure, a shielding electrode, an electric field inductive electrode, a crossbeam and a supporting beam, wherein the exciting electrode with the comb structure is fixed on one side of the substrate by ananchor point, while the vibration sensitive electrode with the comb structure is fixed on the other side of the substrate by an anchor point; the shielding electrode and the electric field inductive electrode are fixed on the area of the substrate in the middle of the exciting electrode and the vibration sensitive electrode; the shielding electrode and the electric field inductive electrode are alternately arranged; the crossbeam is positioned in the middle of the shielding electrode; one end of the supporting beam is fixed on the substrate by the anchor point, while the other end is connectedwith the exciting electrode and the vibration sensitive electrode. The resonance miniature electric field sensor can reduce the static exciting voltage of a device, improve the sensitivity and precision of the sensor, and further improve the environment interference resistance capability of the sensor.

The invention relates to an optical three-dimensional measuring method based on a phase coding technology, belonging to the technical field of three-dimensional measurement. The method comprises the following steps of: (1) producing a grating coding stripe image by a computer; (2) projecting the grating coding stripe image by using digital projection equipment; and (3) acquiring the grating coding stripe image and performing coding solution and three-dimensional measurement by adopting a phase-shift algorithm. The method is characterized in that: the number of pixels in each grating period of the grating coding stripe image equals to the step number of the adopted phase-shift algorithm; the gray scale of the pixels in each grating period of the grating coding stripe image meets sine or cosine curve distribution, and the gray-scale value of the pixels are extreme points of the corresponding sine or cosine function. Compared with the traditional sine phase-shift coding method, the method has strong interference resistance to the nonlinear influence of gamma rays of the digital projection equipment, the coding has higher stability, reliability and correctness, and the method is important in the aspect of accurate measurement of an optical three-dimensional outline on the external surface of an object.

The invention discloses an intrusion detection system and a method thereof. The system has a plurality of detection networks arranged on a guarding site; and a bus is used to connect the detection networks to a remote monitoring center. The method comprises the following steps: a wireless sensing module is added into a network established by a wireless data module and uploads a neighbor sheet after receiving a network address distributed by the wireless data module; a network topological graph is formed at the remote monitoring center end; broadcast is transmitted and received after the work parameters of the remote monitoring center are received; the radio signal strength of the broadcasting signal is acquired and is routed and uploaded to the wireless data module; the wireless data module carries out a decision algorithm according to the information so as to determine whether the intrusion behavior brings about the abnormality of the radio signal strength; in case of abnormity, the wireless data module gives off an alarm and determines the position of an intruder through the positioning algorithm in a sensitive area; and the position of the intruder and the alarm information are sent to the remote monitoring center. The intrusion detection system can identify the intrusion behavior, give off the alarm and determine the position of the intruder without being easily affected by environmental factors, as well as has a high interference killing capability and low cost.

The invention provides a voice activating photographing system. The voice activating photographing system comprises an operating system module (10), an activating word customizing module (11), a photographing module (12), an audio module (13) and a storage module (14), wherein the voice activating module runs in the operating system module (10) and includes voice input (11), voice activating algorithm (2) and activating execution (3); the voice activating algorithm (2) is used for acquiring voice signals from the voice input (1), carrying out voice activating, and outputting the result to the activating execution (3), thus finishing the activating operation; and the voice activating algorithm (2) is executed by acoustics characteristic extracting (4), activating word detecting (5), activating word confirming (6), construction of an activating word detecting network (7), a training acoustics module (8) and construction of an activating word confirming network (9). According to the voice activating photographing system, command words can be customized according to the user requirement, human-computer exchange is more humanized, the accuracy in activating is higher, and the interference resistance stronger.

The invention discloses a grid-connected current control method for a combined single-phase two-stage photovoltaic generation system. The single-phase photovoltaic generation system is of a two-stage structure and comprises a first-stage BOOST up circuit link and a second-stage single-phase full-bridge inverter circuit link. The single-phase full-bridge inverter circuit link adopts a double-closed-loop control strategy and comprises an outer loop which is a direct-current bus voltage loop and an inner loop which is a grid-connected current loop and further utilizes voltage forward feed control of a power grid. The BOOST up circuit link is used for realizing boosting voltage of a photovoltaic battery module to a direct-current bus voltage reference value while realizing maximum power point tracking. Besides, the single-phase full-bridge inverter circuit link is used for realizing stabilization of the direct-current bus voltage and synchronization of frequency and phase of system output current and voltage of the power grid. The grid-connected current control method for the combined single-phase two-stage photovoltaic generation system has the advantages of excellent stability, flexibility in dynamic response, low content of low-order harmonics, high interference resistance, good robustness, high reliability and the like.

The invention provides a method and a system for anti-interference quantum secure direct communication. The method comprises the following steps that: a sending end performs non-orthogonal state combination coding, randomly expands a bit to two bits, randomly selects two different base combinations, converts the two bits into corresponding quantum states in the base combinations and then sends the two bits through a quantum channel; and a receiving end randomly selects two same base combinations for quantum state measurement so as to realize definite measurement on one bit. The method and the system can effectively solve the problem of quantum secure direct communication under the condition of not accurate measurement on the quantum, and realize point-to-multipoint quantum information distribution.

The invention relates to a multi-objective optimization anti-interference filtering method for a SINS/GPS/polarized light combined navigation system, and relates to the multi-objective optimization anti-interference filtering method for the SINS/GPS/polarized light combined navigation system of carriers in earth atmosphere, wherein the carriers comprise unmanned plane, ship, vehicles and the like. The method is characterized by: classifying SINS, GPS, polarization sensors, and interferences in the environment, interference modeling for different type interference, designing an interference observer to cancel the interferences that can be modeled, inhibiting Gaussian random variables by H2 optimization technology, and inhibiting norm-bounded unknown variables by H-infinity optimization method. According to the multi-objective optimization anti-interference filtering method, the characteristics of the interferences in the SINS/GPS/polarized light combined navigation system is fully utilized, interference cancellation and interference inhibition are carried out by using the method of designing the interference observer and robust technology, and the method is usable for improving navigation precision of the carriers in the earth atmosphere.

The invention provides a novel cationic surface sizing agent and a preparation method thereof, relating to a paper surface treating agent. The traditional sizing agent adopts an emulsifying agent which can result in poor storage stability of products and poor stability of a prepared coating liquid, especially poor interference resistance to foreign ions and the to-be-improved foaminess of the coating liquid. The invention provides a novel cationic surface sizing agent and a preparation method thereof. The novel cationic surface sizing agent comprises 15-50 of natural polymer, 30-70 of water, 0.01-0.1 of natural polymeric modifier, 5-50 of hard monomer, 8-45 of soft monomer, 0.5-10 of cationic monomer, 0.03-5 of evocating agent 1, 0.03-5 of evocating agent 2, 0.03-5 of molecular weight modifier and 0.1-10 of defoamer. The solid content is controlled to be 25-30% by adding water. The invention overcomes the disadvantages in the prior art for producing the surface sizing agent, and the sizing agent provided by the invention is an environment-friendly product which has the advantages of low cost, good stability, high interference resistance to foreign ions, low foaminess and high sizing performance.

The present invention relates to a multipath voltage stabilizing isolated digital DC/DC electric power source and a control method thereof. The DC/DC electric power source comprises the following components: a main power topological, an isolated transformer, an primary controller, a secondary controller, a driving circuit, a voltage and current detecting channel, a feedback and sampling channel, a primary accessory electric power source, a secondary accessory electric power source, a parameter memorizer and a communication interface. In the DC/DC electric power source control method, the DC/DC electric power source is leaded to start to operate with a soft starting mode through the primary controller, and the fixed duty ratio of the dead zone of the complementary belt is outputted when the soft starting has finished to control the main switch component of the converter. The secondary controller does setting according to the prearranged parameter. The electrifying time-delay of each path is set according to the starting time sequence, and a mode of soft starting is adopted for outputting the voltage of each path. The invention relates to a full-digitally controlled DC/DC electric power source, wherein the hardware compensation network is replaced by the software code, and the electric power source according to the invention has the advantages of broad range of the adapting temperature and strong interference resistance. And at the same time the controller parameter, the electrifying time sequence, the protecting threshold and the like can be modified flexibly.

The invention relates to an ultra-high frequency positioning and detection device of local discharge of electrical equipment and a method thereof, belonging to the technical field of experiments of local discharge of the electrical equipment. The device comprises a steep-sided pulse generator, an ultra-high frequency antenna, a high frequency coaxial cable and a high sampling rate oscilloscope. The device is characterized in that the steep-sided pulse generator is a nanosecond pulse generator. The method performs the positioning computation by using the device and a computer through a program and a positioning principle based on the time difference method. The device has simple connection; nanosecond pulse signals generated by the steep-sided pulse generator can really simulate ultra-high frequency signals of the local discharge of the electrical equipment and have strong interference resistance and high accuracy of read time different signals, thereby improving the positioning accuracy. The invention can be widely applied to the experiment of the ultra-high frequency positioning detection of the local discharge of the electrical equipment.

The invention discloses a method for detecting a piconet island state according to the self-characteristic of a piconet. The method comprises the following steps of: (1) detecting electrical characteristic value when the piconet runs; (2) judging whether the voltage at a load end is higher than the definite value or not, if yes, entering step (3), and if not, considering that the piconet is not in the island state; (3) judging whether the frequency changing rate is higher than the upper limit of the definite value or not, if yes, sending out a trip signal and then finishing, and if not, entering step (4); (4) detecting and judging whether the frequency changing rate is higher than the lower limit of the definite value or not, if yes, judging whether the phase difference is more than the phase difference setting valve or not, if yes, finishing the detection and sending out the trip signal, and if not entering step (5); and (5) after delaying for a period of time, judging whether the phase difference is more than the phase difference setting valve or not, if yes, sending out the trip signal, and if not, considering that the piconet is in the island state. Compared with the existing detection method, the method has the characteristics of rapid and reliable detection, and guarantees comparatively high anti-interference capability at the same time.

The invention relates to a low-voltage electric wire carrier communication test method and a testing system thereof. The testing method comprises the following testing methods: I, a carrier transmitting PWL online testing method; II, a carrier receiving sensitivity online testing method; III, a carrier communication anti-interference online testing method; IV, a low-voltage circuit impedance change online testing method. The testing system comprises a carrier transmitting device, a program control attenuating device, a tested carrier receiving device, a manual power network, a frequency spectrograph receiver, a computer, a frequency spectrograph, a noise simulator, an impedance simulator and a purifying power. The invention has the advantages of adopting a manual power network parameter model regulated in GB/T 6113 F2, thus having a high standardization degree and comparable testing data; avoiding the testing problems brought by adopting different carrier communication schemes; realizing the online sensitivity testing; carrying out the test at any time and being not affected by the external environment factors like the weather; besides, the invention can simulate the impedance change environment of a real circuit, thus leading the analyzing of the carrier communication on the impedance change of the circuit to be feasible.

The invention provides an improved ceramic material member sequence image segmentation method of a fully convolutional neural network. The method comprises the steps of S10, performing manual marking on an acquired original image, classifying a target and a background by different kinds, obtaining a training label, and representing a label graph of a training sample in an index mode; S20, constructing an improved network model based on the fully convolutional neural network, and performing training; and S30, calculating a loss function and a reverse propagation calculation loss function according to a gradient reducing algorithm, and performing training learning on the network, wherein the learning rate is reduced to one tenth of the original learning rate when verification accuracy increase is stopped. The fully convolutional network is an improved structure based on a convolutional neural network. Based on keeping of good classification performance of the CNN, a spatial position relation between pixel matrixes in better kept, and global characteristic extraction is facilitated. The visual characteristic of an object can be comprehensively studied, and high interference resistance is realized. An objective target can be automatically divided from background, thereby realizing intelligent segmentation.

The invention relates to a pavement crack image detection method. The method comprises the steps of: carrying out graying and filtering processing on a collected pavement image, constructing a pulse coupling neural network PCNN model, utilizing a genetic algorithm to rapidly find advantages of an optimal solution in a non-linear manner in a solution space so as to optimize important parameters of the model, and rapidly and accurately segmenting cracks and a background in the image; then according to the characteristics of the image after the segmentation, carrying out connected domain detection on the whole image, and filtering out the interference of noise and background textures; and finally, extracting a crack skeleton, calculating the maximum widths of the cracks along the normal line of the skeleton, and making marks in the original image. According to the invention, the digital image processing technology is adopted, the genetic algorithm is utilized to optimize the parameters of the PCNN model, optimization searching is accelerated, the iteration times f the PCNN are reduced, and the iteration is more liable to come to convergence, the interference resistance of the segmentation effect is relatively high, and the segmentation is more accurate; in addition, the modes of connected domain rectangularity, circularity filtering and irregular noise filtering are utilized to filter out a large number of irregular patches, and convenience is provided for the crack detection.

The invention discloses a method for realizing a high anti-interference unmanned aerial vehicle remote control data link, which comprises two steps of data transmitting and data receiving, wherein the data transmitting comprises the steps of performing serial-parallel conversion, performing M-ary spread spectrum on parallel N-channel binary baseband information to obtain N-channel M-ary spread spectrum information, performing digital modulation, controlling a frequency hopping source to generate frequency hopping carriers by frequency hopping sequences and performing data sending; and the data receiving comprises the steps of receiving transmitted signals for bandpass filtering, synchronizing the system and dehopping, performing M-ary despreading, performing digital demodulation and performing serial-parallel conversion. The method adopts multi-channel M-ary spread frequency technology, and has higher information transmission efficiency compared with single-channel M-ary spread spectrum with high information transmission; the method adopts multi-channel M-ary spread spectrum, and each channel adopts frequency hopping sequences with different lengths and different code rules so that each channel has higher anti-interference ability; and the method adopts the combination of spread spectrum technology and frequency hopping technology, has the ability of resisting narrow-band interference and near-far effect of a frequency hopping communication mode, and meets the requirement of high interference resistance.