42 results about "Frequency discrimination" patented technology

The invention discloses a frequency locking and frequency discrimination integrated device of a Doppler laser radar. The frequency locking and frequency discrimination integrated device comprises a pulse light source module, a receiving front light path module and a frequency locking and frequency discrimination module. The pulse light source module emits frequency-tunable pulse laser as a frequency-locked optical signal; receiving an echo optical signal from a detection target collected by the front optical path module; the frequency locking and frequency discrimination module is an integrated optical path, and through cooperation of a 1 / 2 wave plate, a beam splitter, a 1 / 4 wave plate, a polarizing beam splitter, a reflector, a dual-channel Fabry-Perot etalon and other elements, polarization state cooperative regulation and frequency discrimination are carried out on two paths of signals, and cascade multiplexing of echo signals is realized. Through the integrated design, the problem of system complexity caused by separation of a frequency locking link and a frequency discrimination link is solved, the echo signal utilization rate is improved, the receiving efficiency of the system is improved by more than one time through cascade multiplexing of reflected signals, meanwhile, an independent frequency locking channel is omitted, the system architecture is remarkably simplified, and the stability and the wind speed inversion precision are improved.

The application discloses a frequency synchronization method of coherent clock system in high-speed data transmission, and a frequency synchronization method and equipment structure for providing high-precision time-frequency reference transmission and 10Gbps data stream transmission. A high-speed modulator is used to generate a radio frequency signal at a local end and a remote end, and the radio frequency signal is received from the opposite end. A carrier tracking technology is used to recover the radio frequency carrier, and a frequency discrimination and phase discrimination value is obtained through a signal processing algorithm in a digital domain. The local frequency discrimination and phase discrimination value is sent to the remote end, the remote end uses the local value and the opposite value to realize joint phase discrimination, and then the joint phase discrimination is sent to a loop filter. The loop filter outputs a voltage control signal, and the remote end uses the voltage control signal to control a voltage-controlled crystal oscillator, so that the frequency synchronization between the remote end and the local end is realized. The method can realize single-fiber single-wavelength bidirectional time-frequency synchronization and high-speed data transmission, can fully utilize the optical wavelength resources of the optical fiber transmission system, and can save the optical wavelength resources compared with the traditional method, and has higher frequency synchronization precision.

This invention discloses an initial frequency identification method for a frequency conversion wireless charging system. The method comprises: S1, power-on initialization; S2, signal acquisition and processing; S3, timing value capture; S4, waveform type identification and phase angle calculation; S5, initial frequency identification and adjustment. Steps S2 to S5 are repeated until the switching frequency is adjusted to a preset range and meets the soft-switching conditions, thus completing the initial frequency identification. This invention relates to the fields of power electronics and wireless charging technology.

This invention discloses a steady-state tunable dual-wavelength generation method based on laser phase-locked loop (PLL), belonging to the field of microwave photonics technology. It includes carrier-suppressed optical double-sideband modulation, a laser PLL, and optical wavelength control. Carrier-suppressed optical double-sideband modulation: the reference signal generated by the reference laser directly drives the modulator, which operates at the carrier suppression point, modulating the RF source onto the two sidebands of the reference signal, providing two reference wavelengths for dual-wavelength generation. Costa laser PLL: based on Costa PLL technology, frequency capture and phase locking of the signal light to the reference light are achieved. Optical wavelength control: digital frequency discrimination is used to track the frequency and phase difference between the signal light and the reference light, controlling the signal light wavelength to remain consistent with the reference light wavelength. This invention solves the frequency drift problem caused by using two independent light sources, and by combining optical frequency doubling, achieves steady-state tunable dual-wavelength generation, thereby supporting the generation of high-quality millimeter-wave signals.

The application discloses a kind of automatic frequency tracking method and system based on sweep mode, frequency is swept by the way of combination of " rough sweep+fine sweep ", first by " rough sweep " of big step, " rough sweep " is the method of difference of adjacent frequency point reflected voltage to judge sweep direction, determine a smaller frequency range containing inflection point, in this frequency range, small step " fine sweep " is used, compare the size of each frequency point reflected voltage, the frequency point corresponding to the minimum reflected voltage is the resonant frequency point of accelerating tube.The application compared with traditional frequency discrimination type automatic frequency tracking method, on the basis of ensuring sweep precision, improve sweep efficiency, can quickly obtain the actual resonant frequency of accelerating tube.

The application discloses a kind of dual-frequency modulation transfer spectroscopy laser frequency stabilization device and method, construct the dual-frequency modulation signal including first frequency component and second frequency component, according to dual-frequency modulation signal driving fiber electro-optic phase modulator to laser is carried out dual-frequency electro-optic phase modulation;Photoelectric detector carries out detection to the polarized beam splitter output light and obtains saturated absorption signal, to saturated absorption signal in turn carries out quadrature demodulation and low-pass filter processing and obtains first error signal and second error signal, first error signal and second error signal are superimposed to obtain dual-frequency error signal;Further, tunable laser is carried out closed-loop feedback control, realizes laser frequency stabilization.The application obtains two different frequency components error signal using dual-frequency modulation transfer spectroscopy detection technology, improves slope and intensity by adding operation, improves frequency discrimination sensitivity and anti-interference ability, is conducive to peak search determination and realizes the precision locking of laser frequency to rubidium absorption peak, with good practicability.

The invention provides a model training method for removing nonlinear echoes and display equipment, and the method comprises the steps: obtaining a first audio signal, eliminating a linear echo signal in the first audio signal, obtaining a second audio signal, extracting a nonlinear distortion feature, a time-frequency discrimination feature, a convolution feature and a time sequence dynamic feature of the second audio signal, and carrying out the recognition of the nonlinear echoes. And feature fusion is performed to obtain a first fusion feature, and then the first fusion feature is input into the long-short-term memory network to obtain a predicted time-frequency graph, so that two continuous layers of long-short-term memory networks are iteratively trained based on the predicted time-frequency graph and the training loss of the nonlinear echo tag to obtain a target model. According to the method, the second audio signal is obtained by removing the linear echo signal, and the model is trained in a mode of performing multi-dimensional feature extraction and fusion on the second audio signal, so that the model can accurately separate the human voice signal and the nonlinear echo signal, and the calculation complexity when the nonlinear echo signal is removed can be reduced.

The invention discloses a fuzzy PID (Proportion Integration Differentiation) control method for an automatic frequency locking system of a laser, which comprises the following steps of: mixing a signal detected by a cavity-front photoelectric detector with a path of radio frequency driving reference signal of an electro-optical modulator to obtain a frequency discrimination error signal and an error signal change rate; after sampling by an analog-to-digital converter, inputting into a fuzzy PID (Proportion Integration Differentiation) controller based on a microprocessor, carrying out fuzzification processing, fuzzy reasoning and defuzzification operation, and outputting a proportionality coefficient increment, an integral coefficient increment and a differential coefficient increment; control parameters are calculated, the driving voltage of the piezoelectric ceramic PZT is adjusted according to the control parameters, the output frequency of the laser is changed, and automatic frequency locking of the laser is achieved. According to the invention, the proportional control parameter, the integral control parameter and the differential control parameter are calculated through the fuzzy PID controller, the output frequency of the laser is adjusted according to the control parameters, automatic frequency locking of the laser is realized, and the control precision and robustness of the frequency locking system are improved.

An adaptive current generation circuit includes an inverter drive chain, a frequency divider, a frequency detector, a low-pass filter, a static comparator group, and a controllable current mirror. An input analog signal of the input buffer is converted into a frequency discrimination voltage in a direct current form sequentially through conversion of the inverter drive chain, frequency division of the frequency divider, frequency detection of the frequency detector, and conversion of the low-pass filter. Then the static comparator group performs a plurality of times of comparison to obtain N bits of digital codes. Finally, the controllable current mirror is controlled by using the N bits of digital codes. The controllable current mirror provides a magnitude-adjustable input current for the input buffer under control of the N bits of digital codes. A magnitude of the input current is positively correlated with a frequency of the input analog signal.

The application provides a four-channel Fabry-Perot frequency discrimination module closed-loop feedback control system, which comprises a laser, a four-channel Fabry-Perot frequency discrimination module and a control module; the four-channel Fabry-Perot frequency discrimination module comprises three optical channels composed of Fabry-Perot etalons and a fourth channel allowing laser to be completely transmitted; two of the three optical channels are used as frequency discrimination channels, and the other one is used as a locking channel; the locking channel and the fourth channel respectively receive laser signals emitted by the laser and transmit the transmitted laser signals to the control module; the control module calculates the transmittance of the locking channel according to the signal intensity of the laser signals transmitted through the two channels, and generates a driving signal according to the preset transmittance to adjust the mirror distance of the three optical channels, so as to realize the locking of the transmittance of the locking channel. The application effectively reduces the influence of laser frequency jitter, external environmental temperature change and vibration factors on frequency discrimination, and improves the frequency discrimination precision and reliability.

The application discloses a chipped wavelength standard device and a preparation method thereof, and belongs to the field of wavelength standards. The device comprises a frequency discrimination module, a pumping module, a locking module and a substrate. The frequency discrimination module comprises a MEMS atomic gas chamber, a micro-ring resonant cavity and a photodetector; the pumping module mainly comprises a laser and a control circuit thereof; the locking module comprises a phase-locked amplifier, a reference signal source and a PID circuit. The substrate comprises a copper or ceramic heat sink and a TEC temperature controller. The application combines the micro-ring resonant cavity and the MEMS atomic gas chamber, directly pumps the micro-ring resonant cavity integrated optical path by the laser, locks the laser wavelength on the micro-ring resonant cavity resonance peak based on the micro-cavity self-injection locking method, reduces the laser noise and realizes the laser linewidth compression. The micro-cavity evanescent field excites the atomic transition in the atomic gas chamber, and the frequency is discriminated by detecting the fluorescence. The laser frequency is locked by controlling the laser current and the micro-cavity temperature through the frequency discrimination signal, and the chip-level wavelength metrology and value traceability are realized.

The invention discloses a laser frequency stabilization method and device based on a saturated fluorescence spectrum, and belongs to the technical field of laser frequency stabilization. According to the method, a frequency discrimination signal of a low atomic density or low absorption system is generated by using a saturated fluorescence spectrum; the saturated fluorescence spectrum of atoms is sunken at the resonance position by utilizing opposite laser, so that the influence of Doppler effect is eliminated; a derivative of a saturated fluorescence spectrum is extracted as a frequency discrimination signal by using a method of modulating pump light and then demodulating a fluorescence signal; and a lens and a reflecting mirror are arranged on the opposite side of the PD to collect the fluorescence and then reflect the fluorescence, so that the PD can collect the fluorescence with double intensity. According to the scheme, a fluorescence signal which is enhanced from zero is directly detected, so that the signal-to-noise ratio is extremely high, and meanwhile, the problem of long-term frequency drift is eliminated; and the hot atom device is adopted, a high vacuum environment is not needed, the complex precise temperature control requirement is also avoided, and the device adopting the scheme is simpler in structure and low in cost.

The application discloses a kind of based on CPT effect microcavity double optical comb frequency stabilization device, two self-injection locking microcavity optical comb are used to obtain microcavity double optical comb, and microcavity double optical comb pump light source is locked;The repetition frequency of double optical comb is independently controlled by the way of radio frequency injection locking;Utilize microcavity double optical comb vernier effect, obtain the double optical comb comb teeth pair that can stimulate CPT effect, utilize atomic absorption peak to generate comb teeth frequency discrimination signal, feedback to pump light, so that pump light reference to the Doppler absorption peak of atom;The repetition frequency of one optical comb is referenced to comb teeth beat signal, and frequency discrimination signal is generated using CPT effect, and the repetition frequency of another optical comb is locked, so that the frequency difference of double optical comb comb teeth pair is locked to CPT resonance peak.The application can compensate the frequency difference between microcavity optical comb repetition frequency and microwave atomic frequency stabilization frequency by double optical comb vernier effect, realize the integration and miniaturization of frequency stabilization system, reduce the complexity of frequency stabilization system.

This disclosure relates to a frequency discrimination circuit, a clock correction circuit, a chip, and an information processing device. The frequency discrimination circuit includes a comparison module, a reference module, and a switched capacitor module. A first input terminal of the comparison module is electrically connected to the switched capacitor module, and a second input terminal of the comparison module is electrically connected to the reference module. The switched capacitor module outputs a voltage to be measured to the first input terminal of the comparison module based on the frequency of the signal to be corrected input to the frequency discrimination circuit. The reference module outputs a reference voltage to the second input terminal based on a preset reference frequency. The comparison module outputs a comparison result based on the voltage values ​​at the first and second input terminals. The frequency discrimination circuit provided by this disclosure simplifies the internal circuit structure of the frequency discrimination circuit, thereby reducing its manufacturing cost.

A high-precision reconstruction system of laser Brillouin scattering spectrum based on image, comprising a back echo beam expansion and shaping unit, a frequency discrimination unit, an optical path switching device, an image sensor, an image acquisition and data processing unit. The back echo beam expansion and shaping unit shoots the scattered echo after beam expansion and collimation into the frequency discrimination unit; the frequency discrimination unit carries out multi-beam interference on the scattered echo after beam expansion and collimation, forms linear interference fringes and then emits; the optical path switching device reflects the linear interference fringes to the image sensor and photosensitizes on the image sensor; the image acquisition and data processing unit acquires the photosensitization result, processes by an interference spectrum extraction algorithm to obtain the device function and wedge angle corresponding to the interference fringes. The application adopts the image sensor to replace the multi-channel photoelectric detector to receive the calibration interference fringes, improves the spatial resolution of calibration reception and improves the calibration accuracy.

The application provides a phase shift fiber grating demodulation system based on a laser frequency stabilization system, which comprises a laser frequency stabilization system for long-term frequency offset locking of laser emitted light; wherein the laser frequency stabilization system comprises an optical frequency comb and a heterodyne interference optical path, the optical frequency comb is connected with the heterodyne interference optical path and is used for receiving the light emitted by the laser; the laser frequency stabilization system further comprises a photoelectric detector, a frequency discrimination circuit and a frequency-voltage conversion circuit, the photoelectric detector is used for converting the light passing through the heterodyne interference optical path into an electric signal; the frequency discrimination circuit is connected with the photoelectric detector and is used for receiving the electric signal; the frequency-voltage conversion circuit is connected with the frequency discrimination circuit and is used for converting the electric signal into an error voltage signal; a PC control host acquires the error voltage signal and outputs a feedback control signal to perform long-term frequency offset locking on the laser emitted light. The application can improve the long-term stability of the laser by multiple orders of magnitude and can realize long-term frequency offset locking.

The invention belongs to the technical field of electronic measurement, and particularly relates to a high-precision clock phase frequency detection system and method. The invention discloses a high-precision clock phase frequency detection system, which comprises the following modules: a clock input and preprocessing module for receiving a reference clock signal and a detected clock signal, and shaping, de-jittering and synchronizing the clock signals; the frequency measurement module counts a reference clock and a measured clock, and the reference clock generates an adjustable gate signal; the phase measurement module adopts a time-to-digital converter technology; and the data processing and control module is used for controlling the whole measurement process. According to the invention, the tradeoff limitation between precision and speed in traditional frequency measurement is broken. Through the self-adaptive gate time technology, the system can automatically adjust the gate time according to the characteristics of the input signal, so that the measurement precision is greatly improved while the measurement speed is ensured.

The application discloses an amplifier system performance optimization method and system, and specifically comprises the following steps: a frequency discrimination module is used to acquire the frequency parameter of a signal to be amplified; a control module is used to acquire the corresponding target bias voltage in a preset frequency-voltage table according to the frequency parameter; and a bias voltage adjustment module is used to adjust the bias voltage of an amplifier to the target bias voltage, so that the frequency of the signal reaches a target adjustment value after being amplified by the amplifier. The application adjusts the bias voltage of the amplifier, and then adjusts the output signal, so that the amplifier can adapt to power requirements in various different scenarios.

The present invention relates to a laser frequency offset stabilization apparatus for generating a frequency discrimination signal, which is a reference signal for laser frequency offset stabilization, such that a slave laser is stabilized to have a constant frequency difference with a master laser, the apparatus comprising: a photodetector for receiving the master laser and the slave laser and generating a beating signal; a power divider for receiving the beating signal from the photodetector and dividing same into two beating signals; two mixers which receive the respective two beating signals divided by the power divider, and which mix same with RF signals generated by respective signal generators so as to generate respective down-converted difference frequency signals; two low-pass filters for receiving the difference frequency signals from the respective two mixers and performing low-pass filtering on each; two signal magnitude detectors for receiving low-pass filter signals from the respective two low-pass filters and acquiring the magnitude of each signal; and a differential signal detector, which receives signal magnitudes from the two signal magnitude detectors so as to generate a difference signal, thereby outputting a frequency discrimination signal.

This disclosure provides a circuit for emitting linear frequency modulated light and a lidar. The circuit for emitting linear frequency modulated light includes: a light source configured to emit frequency modulated light; a frequency discrimination circuit coupled to the light source and configured to output a frequency discrimination signal; and a first feedback circuit, with its input terminal coupled to the frequency discrimination circuit and its output terminal coupled to the light source, configured to output a first feedback signal based on the frequency discrimination signal and a first reference signal to adjust the linearity of the frequency modulated light.

The application provides a distance zero value self-calibration method based on a radio frequency agile transceiver chip, comprising the following steps: configuring the radio frequency agile transceiver chip as a double-channel mode; selecting a manual gain control mode for a receiving channel gain control mode of the radio frequency agile transceiver chip, and manually setting gain values of a working branch receiving channel and a self-calibration branch receiving channel to be the same; connecting a Tx2 radio frequency output signal of the self-calibration branch transmitting channel to a radio frequency receiving end of a Rx2 receiving channel after the Tx2 radio frequency output signal is subjected to frequency conversion and fixed attenuation processing; adopting a Tone-FM single tone frequency modulation for a transmitting end signal of the self-calibration branch; performing single tone frequency signal demodulation at a receiving end of the self-calibration branch, recovering a single tone signal from the received signal through frequency discrimination technology, and performing phase comparison on the recovered single tone signal and an original single tone signal output by the transmitting end of the self-calibration branch to obtain a distance zero value of the self-calibration branch; and compensating a Tx1 radio frequency output signal of a transmitting channel of a working branch and a Rx1 radio frequency signal of a receiving channel according to the distance zero value obtained by the self-calibration branch.

The application discloses a kind of based on two-way digital phase discrimination's ultra-large capture band laser phase-locked device and method, belong to optical coherence technical field.The device of the application includes optical beat frequency system and digital frequency discrimination phase discrimination system.Optical beat frequency system includes master-slave laser, first BS, second BS, high-speed detector.Digital frequency discrimination phase discrimination system includes power amplifier, power divider, frequency mixer, low-frequency amplifier, coupler, frequency divider, first digital phase discrimination board, second digital phase discrimination board, PID module, first external reference source, second external reference source, third external reference source.The application adopts two heterodyne method phase-locked, provides fast, slow two-way feedback signal, realizes the semi-automatic locking of the change of laser phase in a short time in large capture band range, simultaneously by changing external reference frequency, the beat frequency between laser beams can be changed.The application has the advantages of high locking precision, compact structure, large laser tuning range, capture bandwidth etc..

The tobacco image data processor receives an image signal output by an image sensor, the image signal is subjected to bidirectional amplitude limiting and amplification and is added to a transformer T1, a reference image signal is added to the transformer T1 through a synchronous switch K1, and a secondary harmonic network of the transformer T1 carries out frequency discrimination and detection. The light intensity is transmitted to the image processing chip through the bidirectional diodes SD1 and SD2, and is fed back to the potentiometer when slight frequency distortion occurs, the time delay is adjusted to trigger the synchronous switch, the light intensity of the shooting environment is detected through the photoresistor, threshold comparison is performed through the window comparator, and compared logic effective level is transmitted to the image processing chip when the light intensity is too weak or too strong. A logic level triggers a plurality of photoresistors in layout, the values of the photoresistors are sorted and compared to track a light source, the maximum value is transmitted to an image processing chip, and the image processing chip in the later period timely adopts re-shooting, angle adjustment during shooting and exposure to ensure the quality of an image according to the maximum value, so that the complicated processing process in the later period can be reduced.

The utility model discloses a speech signal receiver circuit, its characterized in that, including the signal receiving circuit for receiving the signal of speech signal's frequency band, the frequency modulation circuit for carrying out the demodulation to speech signal's frequency band's signal, the frequency mixing frequency discrimination circuit for carrying out the separation to the signal after demodulation and the power amplification circuit of the original speech signal after filtering to the signal after separation and restoring, the utility model's advantage lies in: receiver not only can use in low frequency band, still can use in other frequency band, and the application range is wider.

The invention discloses a railway signal UM.PJF1 sending detection disc circuit and a detection disc, the detection disc circuit comprises a signal amplitude discrimination circuit, a signal frequency discrimination and dynamic output circuit, a relay driving circuit and a control module, the signal amplitude discrimination circuit is connected with the signal frequency discrimination and dynamic output circuit, and the relay driving circuit is connected with the signal amplitude discrimination circuit. The control module is respectively connected with the signal amplitude discrimination circuit, the signal frequency discrimination and dynamic output circuit and the relay driving circuit; the signal amplitude discrimination circuit carries out amplitude discrimination on the input voltage to obtain an amplitude discrimination signal; the signal frequency discrimination and dynamic output circuit performs frequency discrimination and dynamic output according to the input voltage and the amplitude discrimination signal to obtain a frequency discrimination dynamic signal; the control module is used for outputting a control signal according to the amplitude discrimination signal and the frequency discrimination dynamic signal, and the effective level duration of the control signal is equal to a set duration; and the relay driving circuit controls the relay to act according to the control signal. The time of the control signal is long, the problem of frequent action of the relay is solved, and flashing red of the track section is avoided.

The invention is suitable for the technical field of laser measurement, and provides a compact laser frequency automatic long-term locking system and method, which can obtain an absorption spectrum through triangular wave scanning by adjusting the laser wavelength to be close to a target spectral line. Parameters such as spectral line number, amplitude and distance threshold are set, a target spectral line is automatically identified, and a corresponding voltage value is recorded. And then, through fast and slow PID control, the frequency is locked at a spectral line zero crossing point through PZT and temperature adjustment. And the system monitors the frequency discrimination signal in real time, the PID is closed if the lock is lost, the output value is kept to avoid frequency hopping, then the target spectral line is re-identified through small-range oblique wave scanning and locking is recovered, and long-term stable automatic frequency locking is realized. Therefore, the device can realize many application scenes of laser frequency locking based on the atom / molecule absorption cell, is very suitable for research of high-precision and advanced physical experiments and interference measurement technologies in which a frequency-stabilized light source participates, can fully ensure high accuracy of the laser light source, and can simplify an experiment or measurement device.

The application provides a laser frequency stabilization system and method based on optical multi-frequency point cooperative locking, and relates to the technical fields of laser frequency stabilization and precision measurement. The system comprises a tunable laser unit, a multi-sideband modulation unit, an error signal generation unit and a feedback control unit. The multi-sideband modulation unit uses a controllable first radio frequency signal to modulate the phase of the laser to generate multiple sidebands; the error signal generation unit obtains a time domain electrical signal through frequency discrimination modulation. The feedback control unit calculates a total frequency discrimination error signal after the coherent superposition of multiple error signals, generates a feedback control signal according to the total frequency discrimination error signal and outputs the feedback control signal to the tunable laser unit to realize the locking of the center frequency of the laser. The application significantly improves the signal-to-noise ratio of the frequency discrimination signal through the cooperative action of multiple frequency points, can output an electrical absolute frequency signal anchored to the optical frequency reference interval while outputting high-stability frequency laser, and realizes the direct transfer of the optical domain frequency standard to the electrical domain.

The invention relates to a frequency offset compensation method, a frequency offset compensation device, a chip and a chip module. The method comprises the following steps: acquiring a satellite signal, performing frequency discrimination on the satellite signal through a frequency-locked loop to obtain a frequency discrimination result, determining an updated locking state of the frequency-locked loop according to the frequency discrimination result and a frequency discrimination threshold value, and controlling the locking state of the frequency-locked loop based on the updated locking state. By adopting the method, the GNSS positioning precision can be improved.

The invention discloses a laser radar automatic control system, an automatic collimation method and a control method, and relates to the technical field of laser radars. The system comprises a control computer, a core control module and an execution device group. The core control module comprises a frequency locking module, a motor driving control module and a meteorological monitoring module. And the frequency locking module is used for collecting a spectral signal and a reference signal and extracting a frequency discrimination signal so as to realize laser frequency closed-loop locking. And the automatic collimation module is used for controlling the light beam adjusting mechanism to scan and adjusting the position according to the echo signal intensity until alignment. The meteorological monitoring module is used for judging operation conditions according to the environment data and triggering protection actions. The invention aims to solve the problems of low observation efficiency and high manual dependence degree of the existing laser radar, and realizes automation, remote and intelligent observation process.

The application discloses a kind of device and method based on atomic transition adjustment laser output frequency, comprising: laser, for outputting to be stabilized frequency shift laser;Modulation module, for receiving the stabilized frequency shift laser output by laser, and after using radio frequency signal to modulate the frequency of stabilized frequency shift laser, output single sideband modulation laser;Frequency stabilization module, for receiving single sideband modulation laser and generating frequency discrimination signal, frequency stabilization module is electrically connected with laser, and frequency discrimination signal is fed back to laser, to adjust the frequency of laser output laser, so that single sideband modulation laser is locked on selected atomic transition spectrum line.The application combines the modulation module and frequency stabilization module of laser, and acoustooptic modulator and fiber electro-optic modulator in modulation module are sequentially connected, so that wide-range high-precision adjustment of laser frequency can be realized.The application has the characteristics of simple device, strong robustness and wide applicability, so that it can be widely applied in different fields.