201 results about "Bandwidth (signal processing)" patented technology

The invention provides an OTFS radar communication integrated signal processing method and system based on time-frequency-space domain joint optimization. According to the method, pilot symbol positions and densities are configured in an OTFS time-frequency grid according to channel time-varying characteristics and bandwidths, and a Doppler index range is set to optimize channel information acquisition; deploying a controllable reflecting surface, constructing a phase modulation matrix based on a target position and communication channel parameters, dynamically adjusting a phase gradient direction, and separating energy of a target echo and a communication signal; within a set Doppler index range, calculating frequency offset estimation, correcting a time domain sampling point of a received signal, and generating a phase correction vector; and positioning a spatial aliasing main interference area, and inhibiting symbol interference and spatial aliasing caused by a high-speed target through frequency domain beam forming weighting and phase rotation compensation in combination with a phase correction vector and a sub-Doppler parameter in the area. According to the invention, time-frequency-space domain cooperative efficient processing of OTFS radar communication integrated signals is realized.

The invention provides an electroencephalogram signal artifact removing method and device, equipment and a medium, and relates to the technical field of biological signal processing, collected electroencephalogram signal data is processed to obtain an optimal modal number and an optimal bandwidth parameter, and the optimal modal number and the optimal bandwidth parameter are used for conducting self-adaptive variational mode decomposition on the electroencephalogram signal data to obtain a plurality of modal components; then carrying out multi-dimensional feature analysis to obtain a plurality of feature indexes for judging an artifact suspicion mode and an effective mode component; performing short-time Fourier transform on the artifact suspicion mode, and constructing a time-frequency confidence map to guide weighted time-frequency independent component separation on the artifact suspicion mode to obtain an artifact component; suppressing the artifact component to obtain a suppressed independent component, and performing weighted reconstruction and multi-component fusion on the suppressed independent component and the effective modal component based on the time-frequency confidence map to obtain an artifact-removed electroencephalogram signal; and the fidelity, the robustness and the real-time performance of the electroencephalogram signal are improved.

The invention provides a synchronization signal processing method and an artificial intelligence chip. The synchronization signal processing method comprises the following steps: receiving a synchronization signal reading request with a prompt sign sent by a first processing core; confirming that the synchronization signal reading request is a synchronization operation according to the prompt sign; determining that storage addresses in an effective state exist, and determining whether a target storage address matched with the target program segment identifier and the target synchronous address identifier exists in the storage addresses in the effective state; if the target storage address exists, when the synchronization value in the target storage address is the same as the target synchronization value, returning a synchronization success message to the first processing core, and adjusting readable times in the target storage address; the time spent on reading the synchronizing signal is greatly shortened, the time is saved, the delay is reduced, and the processing efficiency of the processing core is improved; moreover, the bandwidth can be saved, the bandwidth waste is avoided, and the working efficiency of the whole system is improved.

The invention relates to the technical field of indoor positioning, in particular to a millimeter wave CSI (Channel State Information) indoor positioning method and system based on a generative adversarial network, and millimeter waves are large in bandwidth, narrow in beam, high in time resolution and space angle resolution and capable of reducing the influence of a multipath effect. Position estimation is directly obtained from CSI data directly obtained in the millimeter wave communication process, complex signal processing and filtering steps of obtaining other parameters from CSI are avoided, and the system calculation complexity is greatly reduced. The information of the AP position is extracted from the high-dimensional observation vector by using the generative adversarial network, so that complex positioning algorithms such as Kalman filtering or graph optimization are avoided, and the calculation complexity is reduced; according to the method, AP position estimation is obtained through confrontation training of the generator and the discriminator, position coordinates of reference points do not need to serve as labels, input data are all label-free data, dependence on marked data is avoided, and prior knowledge such as the AP or the reference points is not needed.

The invention belongs to the technical field of machining, and particularly relates to an ultrasonic internal broaching broach vibration mode design and control method, which comprises the following steps: firstly, based on a modal isolation structure design method, accurately designing axial and radial vibration modes of a broach so as to meet the requirements of high-precision and high-efficiency broaching machining; a signal processing method based on filtering driving is provided, a designed target vibration mode is accurately driven, the problem that the vibration mode bandwidth of PZT changes along with working conditions such as temperature is solved, finally, due to the fact that the broach frequency vibration mode drifts along with working condition changes in practical application, a dynamic frequency tracking system is developed, and it is ensured that when signals are close to the resonant frequency, the vibration mode bandwidth of the PZT changes along with the working condition changes. The driving frequency can be dynamically adjusted, and it is ensured that the ultrasonic-assisted broaching system is always kept in the target vibration mode. Through optimization and improvement in the three aspects, the ultrasonic vibration broaching effect of the high-strength and high-hardness workpiece is remarkably improved.

The invention discloses a system for simultaneously suppressing second-order nonlinearity and third-order nonlinearity in a direct modulation laser (DML), which belongs to the field of optical communication, and can simultaneously suppress the second-order nonlinearity and the third-order nonlinearity in the system under the condition of DSP-FREE through the combined action of a broadband pre-distortion circuit and an optical path push-pull structure. Wherein at a transmitting end, a set of Schottky diodes and Chebyshev gradient transmission lines which are connected in parallel reversely are adopted to build a DC-10GHz broadband pre-distortion module, and a radio frequency signal generates a reverse third-order intermodulation (IMD3) component through an analog pre-distortion circuit so as to counteract forward third-order nonlinearity of a laser; at a receiving end, a second-order intermodulation (IMD2) component is differentially eliminated through an optical path push-pull modulation architecture. Compared with a traditional DSP scheme, digital signal processing is not needed, the method has the advantages of being low in complexity and wide in bandwidth, and nonlinear accurate compensation of an optical communication system can be achieved.

The invention provides a wireless access network pilot frequency transmission optimization and channel parameter dynamic estimation method and system based on multi-mode signal processing. According to the method, the density, the position and the power of the pilot frequency are dynamically adjusted by monitoring the channel state in real time and combining machine learning and reinforcement learning technologies, and efficient utilization of pilot frequency resources and accurate improvement of channel estimation are achieved. Under various communication scenes such as high-speed movement, multi-user dense and complex multipath, the system can intelligently switch pilot frequency strategies, support non-pilot frequency or low-pilot frequency channel estimation, and significantly reduce bandwidth occupied by pilot frequency and terminal energy consumption. Furthermore, the pilot layout is optimized by adopting an analog pilot technology and a reinforcement learning algorithm, and the robustness and the anti-interference capability of channel estimation are improved. According to the method, pilot frequency resources can be saved, channel estimation errors can be reduced, the error rate is greatly reduced, the spectrum efficiency and the communication quality of a wireless communication system are greatly improved, and the method is suitable for 5G and future 6G network environments.

The present disclosure provides a radio frequency receiving unit and a method of signal reception thereof, in particular, a radio frequency receiving unit is provided. The radio frequency receiving unit comprises a plurality of signal processing paths, at least one receiving port, each of the at least one receiving port being configured to receive a received signal having any frequency within a full bandwidth encompassing a predetermined range of frequencies, a frequency detection unit configured to detect a frequency band to which the received signal belongs, and a control unit configured to control routing, based on the detected frequency band, of the received signal to a corresponding signal processing path for processing.

Provided is a passive optical network uplink signal processing method, comprising: an optical line terminal (OLT) collecting a target uplink signal from a target ONU on an uplink bandwidth pre-allocated to the target ONU to obtain feature data of the target uplink signal, determining identity information of the target ONU according to the uplink bandwidth, and sending the determined identity information to the target ONU; and determining a processing mode of the feature data. Through the embodiment of the invention, the identity of the ONU can be decided according to the characteristic data of the uplink signal, the identity of the ONU can be effectively and reliably prevented from being falsely used, and the problem that the service of the normal ONU is stolen and enjoyed due to the fact that the SN of the normal ONU is counterfeited in the related technology is solved.

The application provides a device for adopting multi-channel transmitting signals, and belongs to the technical field of signal processing. The device comprises multiple signal transmitting branches, each of which comprises a directional antenna and a radio frequency channel connected with the directional antenna; a baseband module connected with the multiple signal transmitting branches; the radio frequency channel comprises a first band-pass filter, a second band-pass filter, a first radio frequency switch and a gain adjusting module; the first radio frequency switch is used for selecting the first band-pass filter or the second band-pass filter to be communicated with the gain adjusting module according to the working mode of the device for adopting multi-channel transmitting signals, so as to output the filtered target bandwidth signal through the directional antenna, output the filtered target bandwidth signal through the directional antenna in each signal transmitting branch, and further provide a test scene for a to-be-tested wearable device, so that the performance verification of the to-be-tested wearable device does not need to be carried out in an actual scene, the verification cost is reduced, and the verification efficiency is improved.

The application discloses a kind of distributed array high-precision time synchronization method based on compressed sensing (CS) and secondary least square (QLS), belong to wireless communication and radar signal processing technical field.For under the restriction hardware bandwidth and strong multipath environment, traditional cross-correlation method is limited by Rayleigh resolution and sampling grid, there is the problem of serious peak aliasing, insufficient synchronization accuracy, the application proposes CS-QLS joint decoupling strategy.The method constructs frequency domain observation matrix and high-density time delay over-complete dictionary by transmitting sparse multi-tone probe signal, reconstructs sparse channel impulse response using CS, separates multipath aliasing and determines direct wave coarse synchronization boundary;Further combined with main path and adjacent grid point amplitude information, QLS is used to fit continuous domain peak position, and grid mismatch error is corrected.The method breaks through the limitation of physical bandwidth and sampling grid, and realizes nanosecond-level high-precision time synchronization in complex non-line-of-sight environment with very low computational complexity.

The application discloses a differential phase encoding optical communication method, device and system based on probability shaping, relates to the technical field of optical communication, and the differential phase encoding optical communication method based on probability shaping comprises the following steps: at a sending end, the probability of differential phase occurrence is changed, so that the code type with small phase change has a large occurrence probability, and the code type with large phase change has a small occurrence probability, so as that the spectrum of a sending signal is compressed; and a sending signal with compressed spectrum is modulated and transmitted. The application can keep the signal processing structure of the original system unchanged, effectively reduce the signal bandwidth through the coding mode, reduce the ISI between code types, and improve the system performance.

An imaging device according to one embodiment of the present disclosure includes a multispectral sensor section, a narrowband signal generator, and a controller. The multispectral sensor section outputs a plurality of (N) wavelength signals as pixel signals. The narrowband signal generator uses a coefficient matrix to generate, from the plurality of wavelength signals output from the multispectral sensor, a plurality of M (M>N) narrowband signals that is narrower in bandwidth than the wavelength signa. The controller calculates an evaluation value by performing weighted average processing on the plurality of wavelength signals or a plurality detection values generated using the plurality of wavelength signals, and performs exposure control of the multispectral sensor section on the basis of the calculated evaluation value.

The invention provides a frequency interleaving system and electronic equipment, and the system comprises a sampling circuit which carries out the sampling of an input signal based on N sampling modules; the input signal is a continuous time analog signal, and the output signal of the sampling circuit is a discrete time analog signal; the frequency interleaver is used for decomposing the broadband signal output by the sampling circuit into N narrowband signals, and the spectral bandwidth of each narrowband signal is one sub-band of the spectral bandwidth of the input signal; the signal processing circuit is used for performing signal reconstruction on the output signal of the frequency interleaver based on a signal reconstruction unit; n is a natural number greater than or equal to 2. According to the frequency interleaving system and the electronic equipment, under the condition that the frequency of the high-frequency input signal is not mixed to the intermediate frequency or the baseband, the high-frequency analog input signal is directly sampled, and the robustness of errors between channels is realized by combining the frequency interleaver; the system overhead is small, the system implementation is simple, and frequency response mismatch is not introduced.

The application discloses a trigonometric function window generating method based on DSP, which comprises the following steps: converting the cosine term of the trigonometric function window into the n-th power form of the complex exponential fixed value based on the Euler formula; after the program initializes the calculation of the fixed value, generating the complex exponential term of each point sequence by recursive multiplication and storing the complex exponential term in the first-level storage space of the DSP; then, the SIMD parallel operation is realized by using the in-line function of the DSP, the first half of the window function values are calculated and stored; the first half of the window function values are inversely symmetrical copied to generate the second half of the window function values; finally, the hardware adaptive memory allocation is completed by combining the hierarchical storage architecture of the DSP, the stack is allocated to the first-level storage space, and the window function generation is completed by summarizing the data. The application greatly reduces the operation amount and the storage occupation, guarantees the calculation precision, deeply adapts to the hardware characteristics of the DSP, can efficiently generate the Hanning, Hamming and Blackman trigonometric function windows, and meets the real-time and high-precision requirements of the signal processing with large bandwidth and high sampling rate.

The invention provides a vehicle-mounted SDR monitoring method and device for mobile monitoring of an urban electromagnetic environment, and the method comprises the steps: receiving and down-converting a radio frequency signal through a radio frequency front-end module, carrying out the analog-to-digital conversion and digital down-conversion of a signal processing module, and carrying out the spectrum analysis through a main control and analysis module; when the monitoring bandwidth exceeds the single sampling capability of hardware, a step tuning strategy is adopted to carry out segmented scanning and frequency spectrum splicing; performing standardization processing on the data through a power calibration model, and finally uploading the standardized spectrum data through an MQTT protocol; according to the invention, a reconfigurable SDR platform is adopted, and step tuning, power calibration and lightweight transmission mechanisms are combined, so that the technical problems of limited bandwidth, hardware rigidity, unreliable data transmission, uncomparable measurement results and the like of traditional monitoring equipment are solved, and broadband, high-precision and high-efficiency urban electromagnetic environment mobile monitoring is realized.

The application relates to the field of medical imaging technology and provides an ultrahigh-speed laser transmission system and a CT detection device, wherein the photoelectric emission system is suitable for emitting light signals of at least two different wavelengths; the optical array assembly comprises an even number of emitting lenses and receiving lenses; the emitting lenses are connected with the photoelectric emission system; the emitting lenses are arranged in a circumferential array on a rotor structure; the wavelengths of the light signals passing through two adjacent emitting lenses are different; the receiving lenses are arranged on a stator structure; the field of view of the receiving lenses covers the exit regions of the at least two emitting lenses; the receiving lenses are used for receiving the spatial light beams emitted by the two adjacent emitting lenses into a single optical fiber for transmission; the photoelectric receiving system is connected with the receiving lenses; the photoelectric receiving system is used for separating the signals of different wavelengths for corresponding signal processing; and the signal synchronous processing system is used for synchronously processing the received light signals. The system is simple in structure, convenient to install, can optimize the bandwidth, and can improve the transmission efficiency.

The application discloses a long-term service hydroelectric generating set operation state evaluation and early warning method and system, and belongs to the technical field of hydroelectric generating set state monitoring and fault early warning. The application converts a traditional point-to-point regression problem into a signal recovery problem in graph signal processing based on a graph smoothing regression method, integrates and constructs a high-dimensional working condition space adaptive neighbor graph by integrating a training set and a to-be-measured set, calculates an edge weight through an adaptive kernel bandwidth and constructs a graph Laplace matrix, introduces a variational objective function with global potential energy anchoring to complete full graph signal analytical solution, obtains a health benchmark value corresponding to a working condition, and realizes unit state evaluation and adaptive early warning through residual comparison of a measured value and the health benchmark value. The application has strong robustness, high full-working-condition evaluation accuracy, and can stably anchor the health benchmark without fault samples, accurately identifies early performance degradation of the unit, and is suitable for state maintenance application of long-term service pumped storage units.

The invention discloses an MEMS digital accelerometer bandwidth test system and method. The system comprises a linear vibration control test bench, a digital-to-analog conversion module, a synchronous data acquisition card and an accelerometer signal processing module. The method comprises the following steps: connecting an MEMS digital accelerometer bandwidth test system and starting the MEMS digital accelerometer bandwidth test system; the linear vibration control test bench receives the frequency specified by the accelerometer signal processing module and drives the MEMS digital accelerometer to be tested to vibrate; the linear vibration control test bench outputs a reference analog signal V1 to the synchronous data acquisition card; the digital-to-analog conversion module is used for converting a digital signal of the MEMS digital accelerometer to be tested into an analog signal V2 to be tested and sending the analog signal V2 to the synchronous data acquisition card; the synchronous data acquisition card carries out synchronous digital processing on the analog electric signals V1 and V2 and then sends the analog electric signals V1 and V2 to the accelerometer signal processing module; and the accelerometer signal processing module adopts an RFFT weighting algorithm based on a self-adaptive sliding window to obtain the bandwidth of the MEMS digital accelerometer, and outputs a dynamic characteristic curve of the MEMS digital accelerometer to be measured.

The application discloses a kind of bandwidth saving coherent transmission method and PON system, it is related to optical access network technical field, including: in downlink transmission direction, OLT sending end generates M digital subcarriers, after digital-analog conversion, it is carried out double polarization modulation, as downlink signal is sent to ONU receiving end;Each subarea ONU receiving end carries out heterodyne coherent detection to the partial spectrum of downlink signal, and downlink signal occupies the single sideband spectrum of ONU end light source;In the direction of uplink transmission, the data of corresponding digital subcarrier is generated by ONU sending end, and single sideband modulation is carried out based on ONU end light source, as uplink signal is sent to the OLT receiving end of corresponding subarea, and uplink signal occupies another single sideband spectrum of ONU end light source;OLT receiving end carries out analog-digital conversion and digital signal processing after heterodyne coherent detection.The application selects subcarrier by configuring light source of different wavelength at ONU end to reduce device bandwidth, so that PON system reduces cost while maintaining transmission capacity, sensitivity and flexibility.

The present application belongs to but is not limited to the technical field of oscillator, and particularly relates to a cavity length locking system and method of a pulse type optical parametric oscillator, comprising an OPO pulse light source, a pulse width feedback locking loop and a power-based auxiliary locking loop; the OPO pulse light source comprises a seed pulse light source and an OPO resonant cavity; the pulse width feedback locking loop is composed of a pulse width measuring device, a signal processing circuit and a cavity length control element; the power-based auxiliary locking loop is composed of a power signal measuring device, a signal processing circuit and a cavity length control element. The locking system works simultaneously using the pulse width feedback locking loop and the power-based auxiliary locking loop. The pulse width feedback locking loop has a Hz level bandwidth and a high gain feature, and the power-based auxiliary locking loop has a kHz-MHz level larger bandwidth. The two are matched for application, and can realize more stable OPO cavity length locking.

The application discloses a decision feedback equalizer for PAM4 encoding band infinite impulse response filter, belongs to the field of signal processing, and comprises a high-pass filter and a linear equalizer, a decision feedback adder, and an infinite impulse response filter coefficient feedback control module; noise filtering is performed on a high-speed signal, low-frequency attenuation of the high-speed signal is compensated, a tailing effect in a frequency response is eliminated, high-speed inter-symbol interference is suppressed and eliminated, and an offline post-cursor in the frequency response is fed back and compensated; meanwhile, aiming at PAM4 encoded data, an RLM (Level separation mismatch ratio) calibration module and a clock data recovery circuit are added, which are used for improving the speed of clock receiving and recovery, and due to the addition of more high-speed modules, the load of the equalization adder is increased; the application uses a layout planning of a double-difference six-port mutual inductance bridge type (T-coil) inductive network, and bandwidth is expanded by using inductive peaking technology.

The present application relates to radar target recognition tracking technical field, especially in the field of phased array radar multi-target adaptive identification method and system, including: first, the radar echo and platform attitude data are acquired, the velocity distribution is extracted and the target is divided into two groups of high speed / low speed; for high speed group, the displacement prediction parameter is extracted to adaptively adjust the beam pointing sequence, for low speed group, the pulse repetition frequency is determined based on the residence time window and the frequency shift characteristics, and the resource allocation scheme is generated; then the attitude correction result is integrated into the beam control parameter, the adaptive observation sequence is generated combined with the resource scheme, and the trajectory information is tracked in real time; again, the Doppler shift deviation is estimated according to the trajectory, the gain / bandwidth and other signal processing parameters are compensated online, and the corrected target position and velocity are output. The present application realizes three-dimensional high-precision identification, continuous stable tracking and efficient resource utilization in complex dynamic scene.

The invention discloses a high-parallelism data acquisition and playback method, device and system based on an FPGA (Field Programmable Gate Array), and belongs to the field of signal processing, and the method comprises the following steps: S1, data acquisition: accessing an external signal, sequentially completing signal filtering, band-pass sampling and ADC (Analog to Digital Converter) conversion, and then storing; and S2, data playback: sequentially performing first caching, orthogonal down-conversion, low-pass filtering, second caching, interpolation, orthogonal up-conversion and DAC conversion on the acquired data, and outputting the data to related receiving equipment. The system supports high-speed data acquisition, high-throughput signal storage and large-bandwidth signal playback, and has a very high engineering application value.

The invention discloses a high-coherence wavelength division-space division multiplexing signal transmission system based on Delta-Sigma modulation. The high-coherence wavelength division-space division multiplexing signal transmission system is composed of a transmitting end and a receiving end. The core architecture of the transmitting end comprises a first narrow linewidth laser (DFB) serving as a light source base, a cascade modulator module (including a first MZM and a phase modulator PM) serving as a signal processing core, a demultiplexing demultiplexer, an annular cavity, a second DFB, a second MZM and a wavelength division multiplexer. The cascade modulator module is mainly used for generating an optical frequency comb with a narrow linewidth distribution characteristic, a single comb line of the optical frequency comb is used as an independent carrier, and multiple paths of signals combined by a wavelength division multiplexer are sent to a multi-core optical fiber, so that the combination of wavelength division and space division multiplexing technologies is realized, and the capacity upper limit of communication transmission is remarkably improved. According to the invention, the maximization of the communication capacity is realized under the condition of limited link bandwidth, and meanwhile, the undistorted transmission is ensured.

This invention addresses the problem that the direct zeroing method used in existing satellite navigation signal processing frequency domain FFT notch filtering easily leads to power loss near interference frequencies, affecting signal integrity. It proposes a narrowband interference suppression system and method for BeiDou navigation. The narrowband interference suppression system includes a BeiDou RF front-end module, a high-speed ADC sampling module, a digital down-conversion (DDC) module, a signal distributor and buffer module, an interference detection and parameter estimation unit, an interference suppression execution unit, a baseband correlation and demodulation module, and a navigation and positioning result output module. A cascaded array of IIR notch filters is constructed using a cascaded array module. A steep transition band is achieved through small-order serial units, and the stopband width of the notch filters can be flexibly adjusted via a convergence factor. This enables precise suppression of extremely narrow stopband interference at different bandwidths, filtering out signals only at interference frequencies, effectively avoiding impact on surrounding useful BeiDou signals and preventing spectrum leakage.

The application provides an analog-digital converter, a method for improving bandwidth of the analog-digital converter and an electronic device, and relates to the technical field of signal processing. A dynamic amplifier and a time-to-digital converter are added in the SAR ADC. The first input end of the dynamic amplifier is coupled with a capacitor array, the second input end of the dynamic amplifier is coupled with a comparator, and the output end of the dynamic amplifier is coupled with the time-to-digital converter. When the comparator enters a metastable state, the dynamic amplifier receives a control signal sent by the comparator, converts an input analog electric signal into a time sequence signal with time, and then converts the time sequence signal into a digital signal through the time-to-digital converter, so that higher resolution is obtained at the same time, that is, the conversion speed of the SAR ADC is improved, and the single-channel bandwidth of the SAR ADC is improved.

The application discloses a target channel selection output method and system for frequency division multiplexing superconducting detectors, and belongs to the technical field of digital signal processing and superconducting detector readout electronics. The method aims at the problems of high resolution channelization resource occupation, high full spectrum output bandwidth pressure, and obvious spectrum leakage and crosstalk under high multiplexing ratio. On the basis of high resolution channelization processing, the mapping relationship between target frequency points and channels and the target channel selection output mechanism are introduced. After the wideband digital input signal is processed by the polyphase filter bank channelization, only the complex data corresponding to the target frequency points containing effective signals are selected and output, and are further separated into I / Q data stream output. The scheme combines high resolution channelization processing with the mapping driven selection output mechanism, reduces resource occupation and data transmission bandwidth while ensuring frequency resolution, and improves real-time performance and signal fidelity in the readout scene of high multiplexing ratio detectors.

Exemplary embodiments of the present disclosure can include, for example, an atomic force microscopy (AFM) system, including a cantilever(s), an optical pickup unit(s) (OPU(s)) including a laser positioned over the cantilever(s), and a power source providing noise with a noise level that is below 300 Picometers. The noise level of the power source can be below 200 Picometers. A digitizing arrangement can be included which can be associated with the OPU. The digitizing arrangement(s) can have a bandwidth of about 2 MHZ. The OPU(s) can have a detection bandwidth of at least 80 MHZ. The exemplary apparatus can be combined with a chemical protocol and statistical signal processing and image analysis procedures to map DNA at high speed and accuracy.

A photonic-integrated distributed acoustic sensing system (DAS) with long-distance and wide-frequency response includes: a low-voltage DC electric drive module, an optical transmitter chip, an integrated optical amplification module, an optical receiver chip, a signal conditioning and acquisition chip, and a digital signal processing chip that are sequentially connected. The photonic-integrated DAS system has the features of extended monitoring distance, broad frequency response bandwidth, high signal fidelity, ultra-sensitive detection capabilities, low power consumption, compact form factor, and robust environmental adaptability.