113results about How to "Low hardware performance requirements" patented technology

The invention discloses a cloud game service platform. The platform comprises a control server cluster, a streaming media server cluster and a game server cluster, wherein control servers are used for distributing streaming servers and game servers to clients; the streaming servers are used for forwarding game operation instructions transmitted from the clients to the game servers and forwarding streaming media code streams generated by the game servers to the clients; and each game server comprises a game process management module, an audio and video capture module, a coding module and an operation instruction simulation module, and the game servers are used for simulating the game operation instructions into game programs. According to the cloud game service platform, users can enjoy good game experience while not establishing high-end PCs (personal computers) as game machines but accessing low-configuration PCs to a high-speed network.

The invention relates to a student classroom attendance statistical system which comprises a management terminal and a plurality of user terminals, wherein the user terminals include a classroom management terminal, a teaching management terminal, a student management terminal, a class teacher terminal and a student terminal; the management terminal includes a computer, the classroom management terminal, the teaching management terminal and the student management terminal; the class teacher terminal includes a mobile phone or a computer; the student terminal include student mobile phones. The student classroom attendance statistical system disclosed by the invention is synchronous in statistics and management and accurate and effective in information and has the characteristics of scientificity, convenience, advancement and the like; the student classroom attendance statistical system disclosed by the invention can finally achieve the purpose of management work preposing in a working mode in the existence of an informatization platform, so that the problem of student nonattendance can be effectively solved and the prerequisite condition for building a positive upward study style atmosphere is created.

The invention relates to an autopilot flight control system. The autopilot flight control system comprises a flight control panel, a radio station, a servo mechanism, a receiver and a remote controller, wherein the radio station is communicated with the flight control panel in a two-way mode on remote control and telemetering, the servo mechanism receives servo control instructions of the flight control panel, the receiver transmits manual control instructions to the flight control panel, and the remote controller transmits remote manual control instructions to the receiver. The flight control panel further comprises a central processing module, a communication module which communicates with the central processing module in a two-way mode, a sensor module which communicates with the central processing module in the two-way mode, and a servo output module which receives instructions of the central processing module, wherein the communication module of the flight control panel receives instructions of the receiver and communicates with the radio station in the two-way mode. The radio station communicates in the two-way mode with a ground control system outside the autopilot flight control system. The servo output module transmits servo information to the servo mechanism. The autopilot flight control system is small in structure, simple and clear in system design, high in computation efficiency and reliability and very good in expansibility and portability.

The invention is an auto-tuning PID generator control system based on an artificial neural network. The control system mainly comprises an artificial neural network control module, a PID control module, a state detection module, an execution module and a generator output module. Control parameters Kp, Ki and Kd of the PID control module are automatically tuned by the artificial neural network control module. With the adoption of the technical scheme provided by the invention, the control system can automatically adapt to change in system parameters such as the generator state or the external environment; the robustness and the operational reliability of the control system are greatly improved; the control precision is greatly improved; the energy utilization efficiency of the generator set is increased; the exhaust gas emission of the generator is reduced; and the noise and the vibration are reduced. In addition, the control system adopts the artificial neural network training and the identification-control separation mode, so that the cost of the control system is greatly reduced, and the control system has a high cost performance.

The invention discloses a video-based moving object intrusion alarm method and relates to the field of security monitoring. The method comprises steps as follows: continuously acquiring indoor real-time monitoring images and inputting the images into scene mode computational algorithms to calculate the scene complexity; when the scene complexity is larger than the threshold, regarding the scenes as complex scenes, and otherwise, regarding the scenes as simple scenes; adopting different background parameter estimation algorithms for different scene modes respectively, and then extracting previous scene features by using background parameters; calculating the previous scene feature complexity, when the previous scene feature complexity is larger than the threshold, sending alarm information when judging moving objects intrude into a room, otherwise, updating the image background parameters, and continuously repeating the steps. According to the method, indoor monitoring scenes are divided into the simple scenes and the complex scenes, different detection algorithms are adopted for the different scenes, the adaptability of the alarm method to the different indoor scenes is improved, and the probability of false alarms of monitoring is decreased.

The invention discloses a lightweight middleware-based networking RFID system, which comprises at least one middleware computer, at least one management computer and a distributed data transmission management module. The management computer is connected with the middleware computer through a network; each middleware computer is provided with a temporary database system and at least one data extraction module; each management computer is provided with a newly read label temporary database, a main database and an information processing module; the distributed data transmission management module allocates the newly read label data in the temporary database system of the middleware computer as required and transmits the data to the newly read label temporary database of the management computer through the network, and the data is processed by the main database and the information processing module of the management computer. The system is simple in structure, easy to construct and expand, low in cost and suitable for medium-sized and small enterprises; and the data distributed on different computers can be conveniently processed.

The invention discloses physical layer architecture for the terahertz wireless network. The architecture comprises a transmitting end and a receiving end. The transmitting end comprises a scrambler module, a framer module, a forward error correction (FEC) encoder module, a preamble module, a high-speed transceiver module, an on-off keying (OOK) modulation module and a terahertz oscillator; and the reception end comprises a reception processing module corresponding to the transmitting end, as well as a direct detector, a high-speed transceiver and CDR module, a frame synchronizer module, an FEC decoder module, a de-framer module and a descrambler module. The physical layer architecture can be used to directly process bit data flow, complex digital signal processing is avoided, the architecture can be applied to single-channel terahertz high-speed wireless network as high as 100Gbps magnitude, the structure is simpler, convenience is provided for design of special processors, and the power consumption and size are easy to control; and the physical layer architecture can be completely parallel in technical feasibility, can be realized on the basis of a present horizontal FPGA device, and requirement for hardware performance is lower than that of present architecture.

The invention discloses a sensing carpet, a system and a method used for monitoring pedestrian flow density in a public place. The monitoring of the pedestrian flow density is realized through the communication between the sensing carpet and a monitoring terminal by taking the sensing carpet as sensing equipment of the pedestrian flow density. A sensing detection circuit of the sensing carpet mainly comprises a detection module, a communication interface and a plurality of compression detection devices arranged in the sensing carpet in arrays; the sensing detection circuit is simple in structure, low in cost and easy to realize; the sensing carpet can be paved in various public places at any time, can be used and installed immediately, and is very convenient to install, detach and move; and the monitoring terminal can be realized by any terminal with communication, data processing and display functions, can realize portable monitoring. The processing flow of the overall system is simple, the programming difficulties of software programming personnel are reduced, the hardware performance requirements on a sensing carpet detection module and the monitoring terminal are reduced, and both the manpower and resource cost of system development can be controlled effectively.

The embodiment of the invention provides a method and system for processing huge traffic data, relating to the field of traffic information processing and being capable of lowering the hardware requirement for processing the huge traffic data and further reducing the maintenance cost of the processing system. The system for processing the huge traffic data comprises a management node, a working node cluster and a network router, wherein the management node is connected with the working node cluster through a network; the management node is used for monitoring the working state of each workingnode, monitoring the resource use condition and the task executing condition of each working node, and distributing storage of traffic data and calculating tasks of a traffic analysis model to each working node; the working nodes are used for sending the use condition of the resources per se to the management node, receiving the tasks distributed by the management node, and storing the traffic data and calculating the traffic analysis model; and the network router is used for connecting the management node with the working nodes. The embodiment of the invention is used for processing the hugetraffic data.

The invention discloses a multipath delay measurement method for a power line carrier channel. The multipath delay measurement method comprises the following steps: creating a pseudo-random sequence group and copying the pseudo-random sequence group to a receiving end by a sending end; coupling the pseudo-random sequence group in a power line channel is to be measured; receiving a short pseudo-random sequence and calculating a relevant sequence; completing data synchronization; receiving a long pseudo-random sequence and calculating the relevant sequence; determining a main path correlation peak and multipath correlation peak; and calculating an arrival time difference of a main path and each path to obtain a channel multipath delay measurement value of the power line carrier channel. According to the multipath delay measurement method disclosed by the invention, no standard clock source is needed, so no dependence is relied on a GPS clock signal or other clock signals, the application range is wide, the data analysis and processing method of the pseudo-random sequences in the multipath delay measurement method disclosed by the invention is intuitive to operate, simple and quick, thereby being suitable for application occasions of various types, and the requirements on hardware performance are low, so a hardware device carrying the method disclosed by the invention is small in volume, low in cost and is suitable for measurement sites and test occasions of various types.

The invention discloses a mobile intelligent terminal differential locating system based on CORS enhancement. The mobile intelligent terminal differential locating system comprises an intelligent mobile terminal, a CORS reference station network and a server, wherein the intelligent mobile terminal is provided with a data acquisition module and a first data transceiving and coding and decoding module connected to the data acquisition module, the server is provided with a second data transceiving and coding and decoding module and a data processing module and a differential resolving module which are connected to the second data transceiving and coding and decoding module, and the first data transceiving and coding and decoding module can conduct data interaction with the second data transceiving and coding and decoding module. The mobile intelligent terminal differential locating system has the obvious advantages that data processing and data resolving are both set in a server side, the data processing load of the intelligent mobile terminal is reduced, and the requirement of the intelligent mobile terminal for the hardware performance is also lowered; the problem that CORS servicecannot be accessed into the mobile terminal of a smartphone is solved, and the limit of expensive cost of a traditional measuring-type receiver is broken.

The invention provides a method for generating waveforms in radio communication and in particular provides a method for generating waveforms of non-sinusoidal orthogonal bandpass signals in time domain. The method has the beneficial effects of simple hardware structure and low implementation cost. The method can generate the waveforms, with in-band energy concentration the same as that of the prolate spheroidal wave function (PSWF) of baseband, of the orthogonal bandpass signals in time domain in any frequency range, ensures the number of the orthogonal waveforms to double that of the original PSWF waveforms and can be used for improving the frequency band use ratios and the power use ratios of the radio communication systems. The generation method is characterized by determining the parameters according to the spectrum mapping relation and the sampling theorem, solving the numerical solution of PSWF of baseband by the numerical solution method, converting the signals to the analog signal waveforms through analog-to-digital conversion and low-pass filtering and carrying out time domain multiplication on the analog signal waveforms and the same frequency orthogonal sine / cosine functions with phase difference shown in the specification respectively, thereby obtaining the orthogonal waveforms.

The invention relates to a praxeology-based position tracking method and aims to overcome the defect of high hardware requirements caused by the large required sample amount and the high algorithm complexity when particle filter calculation is used in existing tracking methods. The position tracking method comprises steps as follows: obtaining a current original uncorrected positioning result of a motion terminal according to a positioning time interval T smaller than the acquisition cycle of a sensor with a positioning algorithm; obtaining motion parameters of the motion terminal through an acceleration sensor and a direction sensor; judging and distinguishing the obtained motion parameters to determine three correction modes to be performed on the motion terminal; taking a final positioning result stored and recorded last time as the final positioning result of the precious moment, and performing positioning correction of a static correction mode, positioning correction of a moving correction mode or positioning correction of a turning correction mode in combination with the obtained current original uncorrected positioning result of the motion terminal; outputting the corrected final positioning result obtained by the correction modes; storing and recording the output corrected final positioning result. The method is used for motion terminal position tracking.

The invention discloses a method for setting a system for notifying the arrival time of a small-station-space bus in advance. The driving conditions of the bus are judged through a bus-mounted broadcast system and a system for notifying the arrival time of a station bus in advance, the arrival time of subsequent station buses is predicted through a prediction model, and passengers are notified of the predicted arrival time through a bus arrival time billboard. According to the method, requirements for hardware performance are low, an algorithm is easy and convenient to operate, required investment input is small, and therefore the method is easy to popularize in various kinds of cities and can provide solid technical support well for popularizing application of intelligent public traffic systems, improving the public transport service level and attracting more residents to adopt the bus mode. Public traffic system operating information is recorded in a storage module, and extra information favorable for passengers besides the measurement value essential for calculation of the arrival time can also be stored. Effective vehicles can be recognized better compared with the mode that the vehicles are numbered, and part of buses which arrive through another ways because of special conditions can also be effectively differentiated. On the basis of historical data, the arrival time is predicted through main real-time variables, and therefore a calculated result can have more reference value. The arrival-at-station information of the buses is updated timely, and effective information is provided for passengers waiting for the buses.

The invention discloses a high-fidelity video amplification method based on deconvolution image restoration, and relates to the technical field of imaging. The method improves quality of images of a camera subjected to video amplification, and solves problems, such as conflict between improvement of resolution and degradation of images after amplification. The method comprises the following steps of: testing a lens of a to-be-tested camera, and acquiring a point spread function of the to-be-tested camera; executing interpolation for an original image through an interpolation method, and obtaining a to-be-restored interpolated image; transforming the point spread function to a spatial domain through Fourier inversion, and obtaining a deconvolution pre-selection template; further intercepting the deconvolution pre-selection template, and obtaining a deconvolution template with the size of 13*13; and performing real-time two-dimensional convolution for the deconvolution template and the to-be-restored interpolated image, and obtaining a restored amplified image. The method performs real-time processing according to a pixel clock rate based on a parallel pipeline thought, reduces hardware performance requirements and code design complexity, and is easy for engineering implementation and highly adaptable.

The embodiment of the invention relates to a vehicle diagnosis method, device, equipment and system, and diagnosis connection equipment. The vehicle diagnosis device comprises a first interface module, a first protocol conversion module and a first software interface module; wherein the first interface module is used for reading a user operation on the interface and transforming the operation intoa corresponding diagnostic instruction; the first protocol conversion module is used for transforming the diagnostic instruction into standard transmission data corresponding to the diagnostic instruction; and the first software interface module is used for transmitting the standard transmission data corresponding to the diagnostic instruction through a first communication unit. According to theembodiment of the invention, all or part of the protocol conversion of the physical layer and data link layer, which consumes memory resources and processor resources, is put in the vehicle diagnosisequipment for running, therefore, the diagnosis connection equipment only needs to run part protocol conversion of the physical layer and the data link layer or does not need to run the protocol conversion of the physical layer and data link layer. The requirements for hardware performance of the diagnosis connection equipment are reduced; and the hardware cost of the diagnosis connection equipment is saved.

The invention discloses a lightweight modeling method of a satellite cable. Based on the computerized design technique and the Pro / E secondary development technology, the lightweight modeling method comprises the steps of 1, establishing a three-dimensional electrical connector lightweight model in Pro / E, 2, establishing a cable joint table in a computer system, 3, generating a lightweight cable joint table by use of a Pro / E secondary development tool, 4, designing a cable trend path in the Pro / E, 5, reading in the lightweight cable joint table in the Pro / E and creating a three-dimensional cable lightweight model, 6, performing model examination in the Pro / E, and 7, assembling the cable model and the electrical connector model in the Pro / E. The lightweight modeling method of the satellite cable has the advantages that the size of a three-dimensional cable model file can be greatly reduced, the three-dimensional modeling of the satellite cable can be improved, the length and the weight of the cable can be accurately controlled and the efficiency and the quality of the satellite cable design can be improved, based on the lightweight thought and by maintaining the major information of cable modeling and neglecting secondary and irrelevant information.

The embodiment of the invention provides a contour rendering method and device, equipment and a storage medium, and the method comprises the steps: obtaining a first normal vector of a reference vertex of each vertex in a contour model of a virtual object when a movement operation for the virtual object is received or a virtual camera in a game scene is pushed to be close to or pulled away from the virtual object, wherein a reference vertex is a vertex, the spatial distance between which and the vertex in the source model of the virtual object meets a preset condition; obtaining a color parameter of the vertex in the contour model according to the first normal vector, and rendering the contour of the virtual object according to the color parameter and a preset mask parameter of the vertex.The contour rendering method provided by the embodiment of the invention has low requirements on hardware performance, and can render a stylized contour with a controllable shape according to the color parameters and the mask parameters.

The invention provides a set-top box of a television and a game running method for the set-top box of the television. The method comprises the following steps of: when the set-top box of the television accesses a server game center by input equipment, generating a corresponding running instance of game software, wherein each running instance has own video, audio and control agent modules; outputting video data, audio data and control data output in a game running process to each video agent module, each audio agent module and each control agent module respectively; downloading synthesized streaming media and control feedback into a corresponding control adapter of the set-top box of the television; determining whether to transmit the control feedback to the input equipment or not according to the practical situation of the set-top box of the television by using the control adapter; and transmitting the input of a user to the control adapter by using the input equipment, translating the input into a dedicated control protocol, uploading the input to the control agent module of the server, and inputting the input into each game running instance to realize control over a game.

The embodiment of the invention discloses a method and device for displaying spine measurement data and a terminal. The method includes the steps that wireless communication connection with a spine measurement equipment is conducted, wherein the spine measurement equipment comprises a measurement sensor; measurement data information from the spine measurement equipment is received in real time through wireless communication connection, wherein the measurement data information comprises measurement data collected by the measurement sensor in the process that a target object is subjected to spine measurement through the spine measurement equipment; when one piece of measurement data information is received every time, at least one of the measurement data in the measurement data information is displayed in real time; after spine measurement of the target object is end, the measurement data is analyzed, and according to the analysis result, a spine schematic diagram is drawn of the targetobject and displayed. According to the method and device for displaying the spine measurement data and the terminal in the embodiment, the requirement of the spine measurement equipment for the hardware performance is reduced, and the cost of the spine measurement equipment is reduced.

The invention provides a method and system for playing an online game through a palm mobile terminal. The method comprises the steps that connection between a server and the palm mobile terminal and connection between the server and a display output terminal are established; the server receives a first control order from the palm mobile terminal; the server processes the first control order and generates processing result information; the server generates first feedback information according to the processing result information and sends the first feedback information to the display output terminal, and the display output terminal processes and responds to the first feedback information. The palm mobile terminal can serve as a control device for the game and replace a traditional mouse and a traditional keyboard, the user experience can be improved, and cost can be reduced.

An axle temperature monitoring system fault detection method includes an axle temperature network model determination step: an axle temperature network model is established according to the position of each axle temperature sensor in an axle temperature monitoring system and axle temperature data monitored by the axle temperature sensors, and a current value of an index parameter of the axle temperature network model is calculated; a failure judgment step: a reference value of the index parameter is obtained, and whether the current value of the index parameter and the reference value are matched with each other; if mismatching occurs, it is determined that the axle temperature monitoring system has a failure. According to the method, fault detection is performed on the axle temperature monitoring system by adopting a method based on a complex network, and compared with the prior art, the method improves data quality, thereby reducing the calculation cost.

The invention belongs to the field of sonar imaging, and provides portable three-dimensional imaging sonar and an imaging method and system thereof. According to the method and system, a shear mapping-deformation technology is applied to the imaging process of the portable three-dimensional imaging sonar. The method comprises the steps that first, an object space is projected into a shear mapping space through shear mapping transformation, an intermediate image is synthetized, the observation direction of the intermediate image is parallel to the Z-axis direction, then the intermediate image is deformed to a preset image space, and a final three-dimensional result image is obtained. By the aid of the intermediate image perpendicular to the Z-axis direction, the re-sampling process of three-dimensional space is converted to be the sampling process of a two-dimensional plane, calculation is greatly reduced, the requirement of the system for hardware performance is lowered, the real-time performance of display can be improved, and the imaging method and system are particularly suitable for the portable three-dimensional imaging sonar.

The embodiment of the invention provides a Bluetooth network and a communication method and device thereof, and a storage medium. In the embodiment of the invention, a Bluetooth node with a forwardingfunction is used as a non-leaf node, a Bluetooth node working in a Bluetooth broadcast mode is used as a leaf node, and a new Bluetooth network is formed, wherein each leaf node is at least connectedto one non-leaf node, and by means of the forwarding function of the non-leaf nodes, the leaf node can communicate with other leaf nodes or non-leaf nodes which are not in the signal coverage range of the leaf node, so the Bluetooth communication range can be expanded; the leaf node only needs to support the Bluetooth broadcast mode, so the requirement for the hardware capacity of the leaf node is low, and limitation of the hardware capacity of the Bluetooth node is avoided.

The invention provides a video data processing method and a device thereof, a terminal, a camera, a video conference system and a computer storage medium. The method comprises the steps of collectingan encoded video stream from the camera; wherein the encoded video stream is a code stream obtained by encoding shot image data by the camera; detecting encoding parameters of the encoded video streambased on a virtual encoder, and feeding back to the camera according to the encoding parameters so that the camera controls an encoding process; and transmitting the coded video stream to a receivingend in an unvarnished transmission mode. According to the technical scheme, the bandwidth requirement that the camera transmits the image data to the terminal equipment is reduced, and meanwhile, thehardware performance requirement on the terminal equipment is reduced, so that some low-performance terminal equipment can support high-definition video data processing, and popularization and application of a video conference technology are promoted.

The invention discloses an FPGA-based multivariate LDPC high-speed decoder and a decoding method, and the decoder comprises a control module which is used for controlling the state transition of the decoder; a message storage module which is used for storing channel initial information and intermediate messages; a check node updating module which is used for updating a check node, carrying out inverse permutation on domain elements and operating an extended mini-sum decoding algorithm based on a bubble algorithm; a variable node updating module which is used for updating variable nodes in parallel on the basis of the row-column structure of a check matrix; and an initial replacement module which is used for completing the first replacement operation of the domain elements, wherein the restreplacement processes are completed in the variable node updating module. According to the decoder, hardware implementation of the decoder is carried out by using the extended mini-sum decoding algorithm based on the bubble algorithm, so that the decoder can reduce the operation complexity while ensuring high decoding accuracy, and the decoder can be widely applied to the technical field of channel coding in the communication field.

The invention provides a main / standby link switching method, device and system. The method comprises calculating all links of a service according to a protection structure of each transmission node of the service; applying for forwarding resources for the links obtained through calculating respectively; establishing a main / standby link resource index table according to the correspondence relationship between the links and the forwarding resources; when the main link breaks down, searching for the standby link and the forwarding resources of the standby link according to the main / standby link resource index table; and switching the found standby link and the forwarding resources of the standby link into the main link. Through the implement of main / standby link switching method, device and system, all links of the service are calculated, and all links and the forwarding resources of the links are written into the main / standby link resource index table; when the main link breaks down, the standby link and the forwarding resources of the standby link are searched out quickly according to the main / standby link resource index table; and the found forwarding resources of the standby link are utilized to directly replace the forwarding resources of the original main link to carry out forwarding processing on service messages, thereby reducing requirement for hardware performance in basic level of each transmission unit in the network.

The invention provides a tax control equipment embedded software design method, and belongs to the technical field of tax control equipment. The method provided by the invention is characterized in that an SCSI protocol and a BOT transmission specification are used for realizing the drive-free design of the tax control equipment; openssl and PKCS#11 are used for operating a tax digital certificate in the tax control equipment; the two-way ssl communication with a server side is realized; a multithreading technology is used; a serial port protocol message or a network protocol message sent by billing equipment can be monitored at the same time; the message is converted into a protocol message required by U-port tax control equipment. The embedded software design method has the advantages that the hardware equipment performance requirements and the operation system version requirements of the billing equipment of billing software accessed into a value added tax invoice system are effectively reduced; meanwhile, the storage of the tax control equipment is not limited to the space limitation; a technical measure is provided for the management of the tax control equipment.

The invention discloses a head-mounted eye movement tracking device. The head-mounted eye movement tracking device is worn on the head of a user and comprises a head wearing piece, a micro infrared camera module arranged in the head wearing piece, an eye video image processing module, a wireless data transmission module and a power module. When the head-mounted eye movement tracking device is wornon the head, an infrared camera bracket on the head wearing piece is adjusted to be aligned with the eyes, thus presenting a clear eye image; eyeball movement tracks can be recorded, and reference isprovided for mental disease diagnosis; and human eye sight information can be tracked, and blinking actions can be detected and converted into mouse signals to control and use digital terminals suchas computers and mobile phones. According to the head-mounted eye movement tracking device, assistance can be provided for doctors to perform pathological examination and mental disease diagnosis on the eyes of patients, and the cursor can be controlled to roughly replace the mouse through the eye movement information, so that convenience is brought to people who are inconvenient to use the mouseby hands, and the equipment is low in cost and convenient to wear.

The embodiment of the invention discloses a distributed optical fiber sensing system and method based on a multi-variable frequency OFDR. A narrow linewidth variable frequency laser generates continuous variable frequency light which is divided into detection light and reference light through a coupler, the detection light is subjected to secondary frequency modulation through an electrooptical modulator, through control of a computer and change of secondary frequency modulation rate, the detection light enters a sensing optical fiber after being amplification by an EDFA, a calibration part isarranged at the tail portion of the sensing optical fiber, the reference light generates interference with Rayleigh scattering light at a back direction to form a detection result having a pluralityof variable frequency carriers, and the detection result is detected by a balance detector and is converted to digital signals. The digital signals are subjected to sectional and time-frequency analysis to obtain an oblique line boundary frequency spectrum, the frequency domain is converted to a space domain, the reflection peak features of the calibration part is employed to perform realignment of the space sub domains so as to obtain the scattering light intensity distribution of the whole sensing range. The secondary frequency modulation and the method for solving the oblique line boundaryfrequency spectrum are employed to achieve separation of the overlapping space signals and exponentially enlarge the sensing range.