Hybrid quantum enhanced radar receiver device and method

Abstract

The invention relates to the technical field of radars, and discloses a hybrid quantum enhancement radar receiver device and method, and the device comprises a quantum enhancement receiving unit, a modular auxiliary receiving unit, an adaptive signal fusion processing unit, and a multi-trigger mode calibration and control unit, and all the units achieve data interaction through a high-speed serial bus. A rubidium 87-cesium 133 composite atom gas chamber is used for replacing a single atom gas chamber, and the multi-frequency-band receiving requirement is met; a modularized switchable receiving module is used for replacing a fixed sensor, so that the scene compatibility is improved; replacing a binary fixed weight algorithm with a multi-dimensional adaptive fusion algorithm containing radar adaptive parameters, and adapting the dynamic fluctuation of the signal; fixed period calibration is replaced by period and event dual-mode calibration, so that the problem of calibration lag is solved; a parallel bus is replaced by a high-speed serial bus, and the data interaction efficiency is optimized.

Description

Technical Field

[0001] This invention relates to the field of radar technology, specifically to a hybrid quantum-enhanced radar receiver device and method. Background Technology

[0002] As a core component of a radar system, the performance of the radar receiver directly determines the radar's target detection capability, anti-jamming level, and frequency band adaptability. Traditional radar receivers, based on electronic device design, are limited by inherent defects such as thermal noise and device nonlinearity. They lack sensitivity in scenarios involving weak target echo signals (such as long-range small targets or stealth targets) and are easily affected by clutter signals in complex electromagnetic interference environments, leading to a decrease in target recognition accuracy.

[0003] Quantum sensing technology based on Rydberg atoms offers a new path for breakthroughs in radar receiver performance due to its nanowatt-level sensitivity, MHz-THz wideband response, natural resistance to electromagnetic interference, and absence of electromagnetic radiation pollution. By leveraging the quantum state transitions of Rydberg atoms to achieve quantum-enhanced reception of radar echo signals, it can significantly improve weak signal detection capabilities. To balance the weak-signal advantages of Rydberg atom sensing with the strong-field stability of traditional electronic sensors, existing technologies have proposed hybrid reception schemes. Among them, patent CN118243636A focuses on the hybrid sensing of Rydberg atoms and auxiliary sensors, with its core design concentrating on specific sensor unit connection methods, fixed-weight fusion algorithms, and a simplified calibration mechanism.

[0004] Analysis reveals that the core protection points of CN118243636A mainly include: ① The Rydberg atomic sensing unit uses a single rubidium-87 or cesium-133 atomic gas cell, and the laser component is a fixed wavelength combination; ② Signal fusion adopts a binary weight allocation based on power threshold (distinguishing only between two weight intervals: weak field and strong field). ③ The control and calibration unit adopts a fixed-cycle calibration mode, and the calibration trigger condition is singular; ④ The auxiliary sensing unit is a fixed model microwave vector sensor with no modular adaptation design.

[0005] In this scheme, a single atomic gas cell cannot meet the reception requirements of radar multi-band (such as microwave and millimeter wave), fixed weight fusion cannot adapt to the dynamic fluctuations of radar echo signals (such as sudden changes in signal power caused by changes in target distance), fixed period calibration is prone to reduce reception accuracy during periods of strong interference, and poor compatibility of auxiliary sensors limits the scenario expansion of radar system.

[0006] Therefore, combining the technical characteristics of radar receivers, such as synchronous reception of echo signals, target parameter extraction, and anti-interference processing, a hybrid quantum-enhanced radar receiver device and method are proposed to solve the performance shortcomings of traditional radar receivers and existing hybrid solutions. Summary of the Invention

[0007] To address the aforementioned shortcomings of existing technologies, this invention provides a hybrid quantum-enhanced radar receiver device and method. By optimizing the structure of the quantum-enhanced receiving unit, improving the radar signal fusion algorithm, innovating the receiver calibration mechanism, and implementing modular design, this invention solves the problems of low sensitivity in weak signal detection, weak anti-electromagnetic interference capability, poor wideband adaptability, and calibration lag and poor compatibility of existing hybrid solutions in traditional radar receivers. This improves the accuracy of radar echo signal reception and the reliability of target detection in complex environments.

[0008] This invention provides the following technical solution: a hybrid quantum-enhanced radar receiver device, comprising a quantum-enhanced receiving unit, a modular auxiliary receiving unit, an adaptive signal fusion processing unit, and a multi-trigger mode calibration and control unit, wherein each unit achieves data interaction through a high-speed serial bus; The quantum enhancement receiving unit uses a rubidium-87-cesium-133 composite atomic gas cell and a variable frequency laser excitation module, which is specifically used to receive weak echo signals of radar broadband with power <-60dBm and achieve quantum enhancement. The modular auxiliary receiving unit adopts a standardized interface and can be adapted to microwave radar receiving, electromagnetic induction receiving or millimeter-wave radar receiving modules. It is responsible for receiving and demodulating strong echo signals of radar broadband with power ≥-60dBm. The adaptive signal fusion processing unit has a built-in multi-dimensional adaptive weight fusion algorithm that integrates radar adaptation parameters. It calculates the weights through five dimensions: signal power, frequency band, signal-to-noise ratio, stability coefficient, and target distance prediction coefficient, and outputs fused signal parameters and target distance and velocity parameters. The multi-trigger mode calibration and control unit adopts a dual mode of periodic calibration and event-triggered calibration, incorporating radar transmission frequency switching into the event triggering condition to achieve real-time dynamic calibration of receiver accuracy.

[0009] Preferably, the composite atomic gas cell of the quantum enhancement receiving unit is doped with 0.1%-0.3% inert gas, and the variable frequency laser excitation module includes a 775-785nm tunable pump laser and a 475-485nm tunable coupling laser, with a laser power adjustment range of 2-50mW, a linewidth of <1kHz, and the ability to dynamically adjust the wavelength according to the radar operating frequency band of 1MHz-100GHz, with an adjustment step of 0.01nm.

[0010] Preferably, the multi-dimensional adaptive weight fusion algorithm is based on fuzzy logic reasoning, with a weight adjustment range of 0-1 and an adjustment step size of 0.01. Before signal fusion, an improved wavelet threshold denoising algorithm and a constant false alarm rate detection algorithm are used for preprocessing to ensure that the clutter suppression ratio is ≥35dB.

[0011] Preferably, the event-triggered calibration conditions of the multi-trigger mode calibration and control unit specifically include: fusion result deviation exceeding ±0.15dB, receiver module switching, ambient temperature change rate > 2℃ / min, radar echo signal power change > 10dB, and radar transmission frequency switching.

[0012] A hybrid quantum-enhanced radar reception method, the specific operation of which is as follows: System initialization and module configuration: The user selects the module type of the modular auxiliary receiving unit through the MCU module or host computer, and the system automatically loads the preprocessing parameters of the corresponding module; the dual-zone temperature control system is started to stabilize the main body temperature of the composite atomic gas chamber at 40±0.05℃ and the window temperature at 38±0.05℃; the variable frequency laser excitation module completes wavelength initialization calibration according to the radar operating frequency band; the wideband radar calibration source is started, and the standard radar signal of the adapted frequency band is input to complete the initial calibration, with a calibration error ≤0.1dB; Dual-unit synchronous reception and preprocessing: The radar echo signal is split into two paths by a circulator. One path is input to the quantum enhancement receiving unit, which collects the signal and noise through the Rydberg atomic quantum state transition, and transmits it after amplification, filtering, and ADC conversion. The other path is input to the auxiliary receiving unit, which completes demodulation and noise reduction processing and converts it into a standardized digital signal before transmission. At the same time, the module information and stability coefficient are uploaded synchronously. Multi-dimensional adaptive fusion and target parameter extraction: Noise reduction and clutter suppression are performed on the two types of received signals, multi-dimensional parameters are extracted and weights are calculated, and the weighted least squares method is used to complete signal fusion and correct errors, and then the target distance, velocity and azimuth are calculated. Multi-trigger mode calibration and result output: Real-time monitoring of signal deviation and radar operating status; when calibration conditions are met, the calibration process is started immediately; after calibration is completed, the final signal parameters and target parameters are output, and relevant data are stored.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) Replace the single atomic gas cell with a rubidium-87-cesium-133 composite atomic gas cell to adapt to the multi-band reception requirements; replace the fixed sensor with a modular switchable receiver module to improve scenario compatibility; replace the binary fixed weight algorithm with a multi-dimensional adaptive fusion algorithm containing radar adaptation parameters to adapt to dynamic signal fluctuations; replace the fixed period calibration with "period and event" dual-mode calibration to solve the calibration lag problem; replace the parallel bus with a high-speed serial bus to optimize data interaction efficiency.

[0014] (2) The composite atomic gas cell combined with the variable frequency laser excitation module extends the receiver's operating frequency band to 1MHz-100GHz, covering mainstream radar frequency bands such as microwave and millimeter wave, which greatly improves the frequency band adaptation range compared to existing technologies; the multi-dimensional adaptive fusion algorithm combined with CFAR clutter suppression improves the sensitivity of weak signal detection, controls the fluctuation of receiving accuracy within 3% in complex environments, and enhances the anti-electromagnetic interference capability; the dual-mode calibration mechanism enables the calibration response speed to reach the microsecond level, avoids the impact of calibration lag on real-time radar detection, and adapts to the needs of dynamic target monitoring; (3) The modular auxiliary receiving unit supports switching between multiple types of radar receiving modules and is compatible with radar systems in different scenarios such as air defense detection, UAV mapping, and deep space exploration. The variable frequency laser module, wide-band calibration source and standardized interface design reduce the integration difficulty with existing radar systems. There is no need to make major modifications to the radar transmitter. The engineering implementation cost is low and the compatibility is wide. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below in conjunction with the embodiments of this disclosure. In order to keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0016] The device includes a quantum-enhanced receiving unit, a modular auxiliary receiving unit, an adaptive signal fusion processing unit, and a multi-trigger mode calibration and control unit. Each unit interacts with the other via a high-speed serial bus (replacing the parallel bus connection method of the CN118243636A). The core design and mitigation points are as follows, adapting to the signal reception and processing characteristics of radar receivers: The quantum enhancement receiving unit adopts a rubidium-87-cesium-133 composite atomic gas cell, which is made of borosilicate glass with an internal vacuum of ≤10Pa. It is doped with 0.1%-0.3% high-purity argon gas (purity ≥99.999%) to suppress atomic collision relaxation and improve the quantum state lifetime to ≥50μs, which is suitable for the quantum state modulation requirements of radar multi-band echo signals. The laser component adopts a variable frequency laser excitation module (replacing the fixed wavelength combination), which includes a 780±5nm tunable pump laser (linewidth <1kHz, power stability ±0.5% / h), a 480±5nm tunable coupling laser (linewidth <1kHz, power stability ±0.5% / h), and a laser power adaptive control module (response time <10μs). The laser driver is controlled by the DDS signal output by the FPGA to realize the dynamic adjustment of the laser wavelength according to the radar operating frequency band (1MHz-100GHz), with an adjustment step of 0.01nm and a power adjustment range of 5-50mW.

[0017] Atomic excitation employs a two-step excitation method. The pump laser first excites the atom from the ground state 6S to the intermediate state 6P, and then the coupling laser excites the atom from the intermediate state to the Rydberg state (such as the ns state with n=30-50). The radar echo signal is input into the atomic gas chamber through a circulator, where it interacts with the Rydberg atom, leading to quantum state transitions. The transition signal is synchronously acquired by a dual-channel balanced photodetector (model: ThorlabsPDB430C, response wavelength 400-1100nm, responsivity ≥0.8A / W, dark current <1nA), while background noise is also acquired to achieve noise cancellation. The acquired signal is then processed by a preamplifier circuit (adjustable gain, range 10-10³), an anti-aliasing filter (cutoff frequency adapted to the radar band), and an ADC converter (sampling rate 1GSps, bit depth 16 bits) before being transmitted to the signal fusion processing unit to complete the quantum enhancement reception of the radar echo signal.

[0018] Modular auxiliary receiving unit (avoidance: adopts a modular and switchable design to adapt to multiple radar reception scenarios): It abandons the fixed sensor selection of CN118243636A and adopts a standardized modular interface, which can adapt to three types of radar auxiliary receiving modules (microwave radar receiving module: 100kHz-26.5GHz, electromagnetic induction receiving module: 50Hz-1MHz, millimeter-wave radar receiving module: 26.5-100GHz). Users can switch as needed according to the radar system's operating frequency band (such as the X-band commonly used by air defense radar and the 2.4GHz band commonly used by UAV radar). The module has a built-in radar signal preprocessing circuit (including a gain-adjustable amplifier, matched filter, and signal demodulation module) that converts the collected radar echo signal into a standardized digital signal (16-bit sampling precision), which is transmitted to the signal fusion processing unit via a high-speed serial bus. Simultaneously, it outputs module type, operating frequency band, and real-time signal stability identification information to meet the demodulation and preliminary processing requirements of radar echo signals.

[0019] Adaptive signal fusion processing unit (avoidance: improved fusion algorithm, added radar adaptation parameters): Based on an FPGA chip (model: Xilinx Zynq UltraScale+ZCU106, including ARM Cortex-A53 processor and Kintex UltraScale+FPGA logic unit), it incorporates a multi-dimensional adaptive weight fusion algorithm (replacing the binary fixed weight algorithm of CN118243636A). The fusion parameters add a radar signal adaptation dimension, including five dimensions: signal power (accuracy ±0.01dBm), frequency band (accuracy ±0.01MHz), signal-to-noise ratio (accuracy ±0.1dB), sensor stability coefficient (calculated based on the signal fluctuation variance within 100ms, range 0-1), and radar target distance prediction coefficient (predicted based on radar transmit power, antenna gain, and propagation loss, range 0.8-1.0), to adapt to the parameter correlation requirements of radar target detection.

[0020] Specific logical chain: ① Signal preprocessing: An improved wavelet threshold denoising algorithm (wavelet basis selection db4, decomposition level of 5) and radar clutter suppression algorithm (constant false alarm rate detection CFAR) are adopted to remove environmental noise and radar clutter. After denoising, the signal-to-noise ratio is improved by ≥20dB and the clutter suppression ratio is ≥35dB. ② Weight calculation: A rule base (containing 120 sets of typical radar scene parameters) is constructed based on fuzzy logic reasoning. The input is fuzzified, fuzzy reasoned (Mamdani reasoning method) and cleared (centroid method), and the weight coefficient is output (weight range 0-1, adjustment step size 0.01). ③ Fusion operation: Data fusion is performed using weighted least squares method. In weak signal scenarios (power < -60dBm, corresponding to distant targets), the quantum enhancement receiver unit weight dominates (0.75-0.95), and a distance prediction coefficient is introduced to correct the signal attenuation error. In strong signal scenarios (power ≥ -60dBm, corresponding to close targets), the auxiliary receiver unit weight dominates (0.55-0.8), and a stability coefficient is combined to correct the saturation perturbation error of quantum state transitions. ④ Target parameter extraction: After fusion, the core parameters of the radar echo signal (frequency, power, phase, signal-to-noise ratio) are output, and the target distance, velocity and azimuth angle are calculated through the target parameter extraction module. The output delay is <0.8ms, and it supports three communication interfaces: SPI, I2C and Ethernet to interact with the radar signal processing backend.

[0021] The multi-trigger mode calibration and control unit includes a high-precision temperature control system, a wide-band radar calibration source, and an MCU core module (model: STM32H743VIT6, main frequency 480MHz, Flash capacity 2MB). It adopts a dual-mode "periodic calibration + event-triggered calibration" (replacing the fixed-period calibration of CN118243636A) to adapt to the dynamic requirements of real-time radar receiver reception. The periodic calibration cycle is dynamically configured (10-1000ms) via the host computer or local buttons, with a minimum calibration interval of 10ms. The event-triggered calibration trigger condition adopts "OR logic" and adds radar-adaptive trigger conditions, including: the deviation between the fusion result and the standard value exceeds the threshold (±0.15dB), receiver module switching, sudden change in ambient temperature (change rate > 2℃ / min), sudden change in radar echo signal power (change amount > 10dB, duration > 50μs), and radar transmission frequency switching.

[0022] The temperature control system adopts a dual-zone PID temperature control design. The main temperature control loop controls the temperature of the atomic gas chamber (target 40±0.05℃), and the window temperature control loop controls the temperature of the laser incident window (target 38±0.05℃), avoiding the influence of laser refraction errors caused by temperature gradients on quantum state excitation. The wideband radar calibration source adopts a modular design, with an output frequency band covering 1MHz-100GHz, a power range of -130dBm to +20dBm, a power accuracy of ±0.02dB, and a frequency accuracy of ±0.1ppm. It can automatically match the standard calibration signal according to the radar's current operating frequency band through MCU instructions. The calibration process takes less than 1ms. During calibration, an interpolation algorithm is used to ensure the continuity of radar signal reception and does not affect target detection.

[0023] Based on the above device, the receiving method includes the following steps. The key steps circumvent the fixed process design of CN118243636A and adapt to the radar echo signal reception, processing, and target detection logic: 1. System Initialization and Module Configuration: Based on the radar system's operating frequency band (e.g., 5.8GHz UAV radar, X-band air defense radar), the user configures the module type of the modular auxiliary receiving unit via the MCU module or host computer. The system automatically loads the corresponding module's preprocessing parameters (gain, filter band, demodulation method); the dual-zone temperature control system is activated, and the composite atomic gas chamber temperature is stabilized to the target value through PID adjustment; the variable frequency laser excitation module completes wavelength initialization calibration according to the radar's operating frequency band; the wideband radar calibration source is activated, and standard radar signals of the appropriate frequency band (e.g., 5GHz, -45dBm, frequency deviation ±0.1ppm) are input to the quantum enhancement receiving unit and auxiliary receiving unit to complete the initial calibration (calibration error ≤0.1dB).

[0024] 2. Dual-unit synchronous reception and preprocessing: The radar echo signal is input in two paths via an antenna and a circulator: one path is input to the quantum enhancement receiving unit, where the atoms in the composite atomic gas chamber are excited to the Rydberg state by a variable frequency laser excitation module. After the radar echo signal interacts with the Rydberg atoms, the transition signal and background noise signal are synchronously collected by a dual-channel photodetector. After amplification, filtering, and ADC conversion, the signal is transmitted to the signal fusion processing unit. The other path is input to the modular auxiliary receiving unit, where the preprocessing circuit demodulates, reduces noise, and amplifies the signal before converting it into a standardized digital signal. This signal is then transmitted to the signal fusion processing unit via a high-speed serial bus, while simultaneously uploading the module type, operating frequency band, and real-time stability coefficient.

[0025] 3. Multi-dimensional adaptive fusion and target parameter extraction: The signal fusion processing unit first performs wavelet threshold denoising and CFAR clutter suppression on the two types of signals to remove environmental noise and radar clutter; then it extracts the signal power, frequency band, signal-to-noise ratio, stability coefficient, and target range prediction coefficient, and calculates the weight coefficients of the two types of receiving units through fuzzy logic reasoning; based on the weight coefficients, it performs fusion calculation on the preprocessed signals to correct the attenuation error in weak signal scenarios and the saturation error in strong signal scenarios; finally, through the target parameter extraction module, it calculates the target range, velocity, and azimuth angle by combining the radar transmitted signal parameters (frequency, pulse width, repetition frequency), and outputs the preliminary fusion results.

[0026] 4. Multi-trigger mode calibration and result output: The calibration and control unit compares the deviation between the preliminary fusion result and the standard signal output from the radar calibration source in real time, while monitoring the status of the receiving module, ambient temperature, radar echo signal fluctuations, and transmission frequency switching. If the periodic calibration conditions or event-triggered calibration conditions are met, the calibration process is immediately initiated, sending laser power and wavelength calibration commands to the quantum enhancement receiving unit and gain and demodulation parameter calibration commands to the auxiliary receiving unit. After calibration, the final radar echo signal parameters and target parameters are output to the radar signal processing backend or display terminal. At the same time, the received data, fusion results, and calibration records are stored on an SD card with a storage rate ≥10MB / s.

[0027] Test scenario: UAV mapping radar system (operating frequency band 5.8GHz, target is a small UAV 1km away, echo signal power -85dBm, strong interference in the 2.4GHz communication frequency band), simulating the hybrid sensing scenario that may be covered by the CN118243636A patent, to verify the device's evasion effectiveness and radar receiving performance.

[0028] Test steps and results: 1. System initialization: Configure the modular auxiliary receiving unit as a microwave radar receiving module (adapted to the 5.8GHz frequency band, demodulation method PSK), stabilize the temperature of the composite atomic gas cell to 40℃, initialize the laser module wavelength to 780nm (pump) and 480nm (coupling), and use a 5.8GHz, -45dBm standard radar signal for initial calibration with a calibration error of 0.08dB.

[0029] 2. Signal Reception and Fusion: The radar transmits a 5.8GHz, 100mW signal and receives echo signals (-85dBm) from a UAV 1km away and 2.4GHz interference signals (-40dBm). The quantum-enhanced receiving unit collects atomic transition signals and background noise, while the auxiliary receiving unit collects echo signals and performs PSK demodulation. After wavelet denoising and CFAR clutter suppression, the fusion processing unit extracts signal parameters and distance prediction coefficients (0.85), and calculates weights through fuzzy logic reasoning: the quantum-enhanced receiving unit has a weight of 0.88, and the auxiliary receiving unit has a weight of 0.12.

[0030] 3. Calibration and Result Output: During the test, a 2.4GHz interference signal caused a sudden 15dB change in the signal-to-noise ratio of the echo signal, triggering event calibration. The system automatically completed the calibration of laser power and receiver gain, which took 0.6ms. The final output results are: echo signal frequency 5.8GHz±0.08MHz, power -85.06dBm±0.12dB, target distance 998.7m±0.3m, speed 3.2m / s±0.1m / s, and interference suppression ratio 42dB, which meets the receiving accuracy requirements of UAV mapping radar.

[0031] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A hybrid quantum-enhanced radar receiver device, characterized in that: It includes a quantum-enhanced receiving unit, a modular auxiliary receiving unit, an adaptive signal fusion processing unit, and a multi-trigger mode calibration and control unit. Each unit communicates with the other via a high-speed serial bus. The quantum enhancement receiving unit uses a rubidium-87-cesium-133 composite atomic gas cell and a variable frequency laser excitation module, which is specifically used to receive weak echo signals of radar broadband with power <-60dBm and achieve quantum enhancement. The modular auxiliary receiving unit adopts a standardized interface and can be adapted to microwave radar receiving, electromagnetic induction receiving or millimeter-wave radar receiving modules. It is responsible for receiving and demodulating strong echo signals of radar broadband with power ≥-60dBm. The adaptive signal fusion processing unit has a built-in multi-dimensional adaptive weight fusion algorithm that integrates radar adaptation parameters. It calculates the weights through five dimensions: signal power, frequency band, signal-to-noise ratio, stability coefficient, and target distance prediction coefficient, and outputs fused signal parameters and target distance and velocity parameters. The multi-trigger mode calibration and control unit adopts a dual mode of periodic calibration and event-triggered calibration, incorporating radar transmission frequency switching into the event triggering condition to achieve real-time dynamic calibration of receiver accuracy.

2. The hybrid quantum-enhanced radar receiver device according to claim 1, characterized in that: The quantum enhancement receiving unit has a composite atomic gas chamber doped with 0.1%-0.3% inert gas. The variable frequency laser excitation module includes a 775-785nm tunable pump laser and a 475-485nm tunable coupling laser. The laser power adjustment range is 2-50mW, the linewidth is <1kHz, and the wavelength can be dynamically adjusted according to the radar operating frequency band of 1MHz-100GHz with an adjustment step of 0.01nm.

3. The hybrid quantum-enhanced radar receiver device according to claim 1, characterized in that: The multi-dimensional adaptive weight fusion algorithm is based on fuzzy logic reasoning, with a weight adjustment range of 0-1 and an adjustment step size of 0.

01. Before signal fusion, an improved wavelet threshold denoising algorithm and a constant false alarm rate detection algorithm are used for preprocessing to ensure that the clutter suppression ratio is ≥35dB.

4. The hybrid quantum-enhanced radar receiver device according to claim 1, characterized in that: The event-triggered calibration conditions of the multi-trigger mode calibration and control unit specifically include: fusion result deviation exceeding ±0.15dB, receiver module switching, ambient temperature change rate > 2℃ / min, radar echo signal power change > 10dB, and radar transmission frequency switching.

5. A hybrid quantum-enhanced radar receiving method, characterized in that, The hybrid quantum-enhanced radar receiver device according to any one of claims 1-4 is operated as follows: System initialization and module configuration: The user selects the module type of the modular auxiliary receiving unit through the MCU module or host computer, and the system automatically loads the preprocessing parameters of the corresponding module; the dual-zone temperature control system is started to stabilize the main body temperature of the composite atomic gas chamber at 40±0.05℃ and the window temperature at 38±0.05℃; the variable frequency laser excitation module completes wavelength initialization calibration according to the radar operating frequency band; the wideband radar calibration source is started, and the standard radar signal of the adapted frequency band is input to complete the initial calibration, with a calibration error ≤0.1dB; Dual-unit synchronous reception and preprocessing: The radar echo signal is split into two paths by a circulator. One path is input to the quantum enhancement receiving unit, which collects the signal and noise through the Rydberg atomic quantum state transition, and transmits it after amplification, filtering, and ADC conversion. The other path is input to the auxiliary receiving unit, which completes demodulation and noise reduction processing and converts it into a standardized digital signal before transmission. At the same time, the module information and stability coefficient are uploaded synchronously. Multi-dimensional adaptive fusion and target parameter extraction: Noise reduction and clutter suppression are performed on the two types of received signals, multi-dimensional parameters are extracted and weights are calculated, and the weighted least squares method is used to complete signal fusion and correct errors, and then the target distance, velocity and azimuth are calculated. Multi-trigger mode calibration and result output: Real-time monitoring of signal deviation and radar operating status; when calibration conditions are met, the calibration process is started immediately; after calibration is completed, the final signal parameters and target parameters are output, and relevant data are stored.