CN-122001493-A - Multi-frequency antenna combination control device and method for vehicle-mounted ground penetrating radar

CN122001493ACN 122001493 ACN122001493 ACN 122001493ACN-122001493-A

Abstract

The embodiment of the invention discloses a multi-frequency antenna combination control device and method for a vehicle-mounted ground penetrating radar, wherein the method comprises the steps of acquiring real-time detection scene parameters of the vehicle-mounted ground penetrating radar, and determining frequency combination requirement information through association adaptation analysis of built-in coupling rules in a pre-configured multi-frequency antenna dynamic coupling model; the method comprises the steps of determining the working frequency distribution result of each antenna by combining an adaptive frequency scheduling algorithm, carrying out interference source feature identification, coupling path analysis and interference suppression operation to obtain an optimized frequency distribution result, collecting scene data after interference suppression, and obtaining interference suppression detection scene parameters by combining dynamic change of real-time parameters and time sequence relevance, and generating a multi-frequency antenna combination adjustment strategy comprising transmitting power adjustment information and frequency switching time sequence information by multi-dimensional feature association. Therefore, intelligent dynamic control of the multi-frequency antenna combination can be realized, and the detection precision, efficiency and adaptability of the vehicle-mounted ground penetrating radar are improved.

Inventors

DENG SHASHA
HUANG HAIFENG
JIA DONGLIN
WANG LIXIA
LIU KEJIA
ZHANG XURONG
Zuo Yaya
Cheng Jijiao
SONG PENG
BAI HAO
Cai Aihong

Assignees

四川川高工程技术咨询有限责任公司

Dates

Publication Date: 20260508
Application Date: 20260123

Claims (10)

1. The multi-frequency antenna combination control method for the vehicle-mounted ground penetrating radar is characterized by comprising the following steps of: Acquiring real-time detection scene parameters of a vehicle-mounted ground penetrating radar, and determining frequency combination requirement information through association adaptation analysis of the real-time detection scene parameters and built-in coupling rules in a preconfigured multi-frequency antenna dynamic coupling model, wherein the frequency combination requirement information is associated with the detection range and target identification requirement of the vehicle-mounted ground penetrating radar; Combining the frequency combination demand information and the self-adaptive frequency scheduling algorithm, and determining the working frequency allocation result of each antenna through spectrum characteristic analysis, antenna unit working threshold association processing and multi-frequency cooperative constraint verification in different frequency intervals, wherein the working frequency allocation result corresponds to the initial working parameters of each antenna; Performing interference source characteristic identification, inter-antenna frequency coupling path analysis and coupling strength association processing based on the working frequency allocation result, and introducing a preset interference prediction rule to execute electromagnetic coupling interference suppression operation to obtain an interference suppressed frequency allocation result; Acquiring detection scene data of the ground penetrating radar after interference suppression operation, and acquiring the corresponding interference suppression detection scene parameters of the vehicle-mounted ground penetrating radar by combining dynamic change characteristics and time sequence relativity of the real-time detection scene parameters; and carrying out multidimensional characteristic association on the interference suppression detection scene parameters and the real-time detection scene parameters to generate a multi-frequency antenna combination adjustment strategy containing transmission power adjustment information and frequency switching time sequence information, wherein the multi-frequency antenna combination adjustment strategy associates the working frequency allocation result and the interference suppression effect of each antenna.
2. The method for controlling the combination of multiple frequency antennas for the vehicle-mounted ground penetrating radar according to claim 1, wherein the steps of performing interference source feature recognition, inter-antenna frequency coupling path analysis and coupling strength association processing based on the working frequency allocation result, and performing electromagnetic coupling interference suppression operation by introducing a preset interference prediction rule to obtain an interference suppressed frequency allocation result include: Extracting the working frequency interval, the transmitting time sequence and the signal modulation mode of each antenna from the working frequency distribution result, and associating the coupling path identification condition in the preset interference prediction rule; Frequency coupling paths among all antennas are simulated and analyzed through electromagnetic signal propagation paths, potential path nodes generating coupling interference are marked, and a coupling influence range is determined by combining signal attenuation characteristics of the potential path nodes; Identifying interference source characteristics based on the coupling influence range, and determining interference risk level through matching degree analysis of the interference source characteristics and working parameters of each antenna, wherein the interference source characteristics comprise an interference frequency interval, a signal intensity change trend and a time sequence distribution rule; setting a coupling strength threshold according to the interference risk level, calculating actual coupling strength through signal transmission loss on a coupling path, and comparing the actual coupling strength with the coupling strength threshold; For the coupling paths with the actual coupling strength exceeding the coupling strength threshold, the working frequency area or the transmitting time sequence of the corresponding antenna is adjusted, and the coupling interference is reduced through frequency offset adjustment, time sequence peak-shifting configuration or signal modulation mode optimization; When the actual coupling strengths of all the coupling paths meet the requirements, outputting a frequency distribution result after interference suppression, wherein the frequency distribution result after interference suppression keeps core working parameters of all the antennas and eliminates the coupling interference risk.
3. The method for controlling the multi-frequency antenna combination for the vehicle-mounted ground penetrating radar according to claim 1, wherein the acquiring the ground penetrating radar detection scene data after the interference suppression operation, combining the dynamic change characteristics and the time sequence relevance of the real-time detection scene parameters, acquiring the interference suppression detection scene parameters corresponding to the vehicle-mounted ground penetrating radar, comprises: Starting a scene parameter acquisition module of the vehicle-mounted ground penetrating radar, and acquiring detection environment characteristics, target distribution characteristics and signal propagation medium characteristics after interference suppression operation to form an initial detection scene data set; Extracting dynamic change indexes in real-time detection scene parameters, and establishing a corresponding relation between an initial detection scene data set and the dynamic change indexes through time sequence correlation analysis to obtain a time sequence correlation analysis result, wherein the dynamic change indexes comprise detection range adjustment trend, environment interference intensity change and timely target position movement characteristics; Marking the missing information in the initial detection scene data set, and extracting supplementary data from the historical detection scene data based on a time sequence correlation analysis result, wherein the supplementary data is identical to the scene characteristics of the missing information; the conflict information in the initial detection scene data set and the supplementary data is eliminated through feature consistency verification, and the conflict information is judged to retain effective data through the weight priority of scene parameters; and fusing the processed initial detection scene data set with the supplementary data, and adjusting the data characteristic weight by combining the dynamic change index to generate an interference suppression detection scene parameter containing environment, target and medium multidimensional characteristics, wherein the interference suppression detection scene parameter is the same as the characteristic dimension of the real-time detection scene parameter.
4. The method for controlling a multi-frequency antenna assembly for a vehicle-mounted ground penetrating radar according to claim 3, wherein the marking of missing information in the initial detection scene data set, extracting supplementary data from the historical detection scene data based on a time sequence correlation analysis result, the supplementary data having the same scene characteristics as the missing information, includes: Traversing all feature dimensions of the initial detection scene data set, identifying feature dimensions and missing positions of missing information, marking the missing positions and recording attribute information of missing features; Determining a time sequence interval corresponding to the initial detection scene data set based on a time sequence correlation analysis result, and screening historical scene data of the same time sequence interval and the same detection area from a historical detection scene database; Extracting feature data consistent with the missing feature attribute information from the historical scene data, and analyzing and calculating the matching degree of the historical feature data and the current detection scene through scene similarity based on comprehensive comparison of the environmental features, the target features and the medium features; And screening historical characteristic data with matching degree meeting requirements as supplementary data, performing time sequence calibration processing on the supplementary data, filling the calibrated supplementary data into missing positions of an initial detection scene data set, and eliminating transition differences between the supplementary data and the initial data.
5. The multi-frequency antenna combination control method for a vehicle-mounted ground penetrating radar according to claim 3, wherein the eliminating of collision information in the initial detection scene data set and the supplementary data through the feature consistency check, the collision information retaining effective data through weight priority determination of scene parameters, comprises: classifying the initial detection scene data set filled with the supplementary data according to characteristic dimensions, wherein each characteristic dimension corresponds to one group of scene parameter data; carrying out consistency verification on the parameter data of each characteristic dimension, and analyzing and identifying conflict data through parameter value distribution range, variation trend and time sequence relativity, wherein the conflict data is represented that the parameter value difference exceeds a preset range under the same characteristic dimension; Inquiring the weight priority configuration of scene parameters, wherein the weight priority is set based on the influence degree of the parameters on the detection precision of the ground penetrating radar, and the higher the influence degree is, the higher the weight priority is; respectively extracting source information from parameters corresponding to the conflict data, wherein the source information comprises real-time acquisition data, historical supplementary data and dynamic adjustment data; And reserving source data with the weight priority reaching a set priority as effective data, eliminating conflicting data and/or data with the weight priority not reaching the set priority, and carrying out interpolation processing based on the parameter change trend of the adjacent time nodes so as to carry out supplementary correction on the characteristic dimension parameters after the data is eliminated.
6. The method for multi-frequency antenna combination control for a vehicle-mounted ground penetrating radar according to claim 1, wherein the step of performing multi-dimensional feature association on the interference suppression detection scene parameter and the real-time detection scene parameter to generate a multi-frequency antenna combination adjustment strategy including transmission power adjustment information and frequency switching timing information includes: Performing feature dimension alignment on the interference suppression detection scene parameters and the real-time detection scene parameters, extracting common environment features, target features and antenna working features, and establishing feature association mapping relations; Based on the feature association mapping relation and the proportion calculation of the parameter difference value and the reference value, determining the variation amplitude of each feature dimension and identifying key feature variation influencing the working efficiency of the antenna; Analyzing the requirement of key characteristic change on the transmission power through a transmission power and frequency matching degree model, establishing the matching degree model based on the adaptation relation between the transmission power of the antenna and the working frequency, and outputting the optimal transmission power ranges corresponding to different frequencies; Determining a time interval, a switching sequence and cooperative logic of frequency switching by combining a multi-antenna working time sequence constraint condition, wherein the time sequence constraint condition is set based on a ground penetrating radar detection period and a target response time; according to the optimal transmitting power range and time sequence constraint conditions, transmitting power adjustment information of each antenna is formulated, and the adjustment information comprises power adjustment amplitude, adjustment opportunity and duration; generating frequency switching time sequence information based on the frequency switching cooperative logic, wherein the time sequence information comprises switching trigger conditions, switching sequences and working time length of each frequency; And carrying out linkage integration on the transmitting power adjustment information and the frequency switching time sequence information, and generating a multi-frequency antenna combination adjustment strategy by combining the mutual constraint relation of the working states of the multiple antennas, wherein the multi-frequency antenna combination adjustment strategy covers the working parameter adjustment and time sequence coordination requirements of all the antennas.
7. The method for controlling the multi-frequency antenna assembly for the vehicle-mounted ground penetrating radar according to claim 6, wherein the determining the variation amplitude of each characteristic dimension and identifying the key characteristic variation affecting the working efficiency of the antenna based on the characteristic association mapping relation and the proportional calculation of the parameter difference value and the reference value comprises the following steps: Extracting parameter values of the same feature dimension in the interference suppression detection scene parameter and the real-time detection scene parameter based on the feature association mapping relation, and determining a reference value of each feature dimension, wherein the reference value is based on the parameter values of the real-time detection scene parameter; Calculating absolute differences of the interference suppression detection scene parameters and the reference values under each characteristic dimension as parameter differences, wherein the difference calculation is used for reflecting the change degree of the characteristic dimension; proportional operation is carried out on the parameter difference value and the reference value to obtain the variation amplitude of each characteristic dimension, the variation amplitude is expressed in a proportional form, and the relative size of the parameter variation is reflected; inquiring a preset key feature list, wherein the key feature list comprises environmental features, target features and medium features which influence the working efficiency of the antenna, and the key features are screened and determined based on the working principle of the antenna and detection requirements; screening key feature dimensions belonging to a key feature list from all feature dimensions, extracting the variation amplitude and variation trend of the key feature dimensions, wherein the variation trend is determined by the parameter variation direction of continuous time nodes; And setting a grading standard based on the influence degree of the variation amplitude on the working efficiency of the antenna and grading the variation amplitude of the key feature dimension.
8. The method for controlling the combination of multiple frequency antennas for the vehicle-mounted ground penetrating radar according to claim 6, wherein the determining the time interval, the switching sequence and the cooperative logic of the frequency switching by combining the multi-antenna operation time sequence constraint condition, the time sequence constraint condition being based on the ground penetrating radar detection period and the target response time setting, comprises: Extracting a detection period parameter and a target response time parameter of the ground penetrating radar, wherein the detection period parameter is the time length of the ground penetrating radar for completing one-time complete detection, and the target response time parameter is the time interval from the time of transmitting a signal to the time of receiving a target reflected signal by the ground penetrating radar; Setting a multi-antenna working time sequence constraint condition based on the detection period parameter and the target response time parameter, wherein the time sequence constraint condition comprises an upper limit of single-antenna continuous working time length, a lower limit of multi-antenna switching time interval and a frequency switching response time requirement; analyzing the working frequency characteristics and detection task allocation of each antenna, and determining the priority order of frequency switching based on target detection importance and antenna working efficiency setting; Determining the frequency switching time interval between the antennas according to the lower limit of the switching time interval in the time sequence constraint condition and combining the signal stabilizing time of antenna frequency switching, wherein the switching time interval meets the signal stabilizing requirement and the time sequence constraint condition; based on the frequency switching priority order, formulating a frequency switching order of multiple antennas, wherein the switching conditions of the switching order comprise avoiding signal conflict caused by simultaneous switching of multiple antennas and maintaining the detection continuity of the ground penetrating radar in the switching process; according to signal interaction rules, working state synchronization requirements and conflict processing mechanisms when different antennas switch frequencies, constructing frequency switching cooperative logic, and performing multi-antenna frequency switching through the frequency switching cooperative logic; And combining the frequency switching time interval, the switching sequence and the cooperative logic and time sequence constraint conditions to generate a frequency switching time sequence constraint scheme.
9. The method for controlling the combination of multiple frequency antennas for the vehicle-mounted ground penetrating radar according to claim 6, wherein the step of performing linkage integration on the transmission power adjustment information and the frequency switching time sequence information and combining the mutual constraint relation of the working states of the multiple antennas to generate the combination adjustment strategy of the multiple frequency antennas comprises the steps of: extracting power adjustment amplitude, adjustment time and duration in the transmitting power adjustment information, extracting switching trigger conditions, switching sequences and working time in the frequency switching time sequence information, and establishing a parameter association list; Acquiring a mutual constraint relation of the working states of multiple antennas, wherein the constraint relation comprises mutual interference limitation of antenna transmitting power, time sequence conflict constraint of frequency switching and a working state synchronization requirement; Based on the parameter association list and the mutual constraint relation, matching the transmitting power adjustment time with the frequency switching triggering condition to coordinate the power adjustment time sequence with the frequency switching time sequence, so as to obtain a first integration result; The transmission power adjustment amplitude of each antenna is adapted to the working characteristics of the corresponding frequency, so that the adjusted transmission power is matched with the frequency characteristics to obtain a second integration result, wherein the working characteristics comprise the signal propagation distance, the penetrating power and the anti-interference performance corresponding to the frequency; determining an integrated parameter by using the first integration result and the second integration result; according to the frequency switching sequence and duration, the working time period of each antenna is distributed, and the duration of the adjustment of the transmitting power is combined, so that the working parameters of each antenna under different frequencies are consistent with the time period configuration; Establishing a parameter checking mechanism of a multi-frequency antenna combination adjustment strategy by combining power and frequency matching degree checking, time sequence cooperativity checking and constraint relation satisfaction degree checking; And verifying the integrated parameters through a parameter verification mechanism, and generating a multi-frequency antenna combination adjustment strategy containing all antenna working parameter adjustment and timing coordination requirements.
10. The utility model provides a multi-frequency antenna combination controlling means for on-vehicle ground penetrating radar which characterized in that includes: A processor; A storage device having a computer program stored thereon, which when executed by the processor causes the processor to implement the multi-frequency antenna combination control method for a vehicle-mounted ground penetrating radar according to any one of claims 1 to 9.

Description

Multi-frequency antenna combination control device and method for vehicle-mounted ground penetrating radar Technical Field The embodiment of the invention relates to the technical field of computer control, in particular to a multi-frequency antenna combination control device and method for a vehicle-mounted ground penetrating radar. Background The vehicle-mounted ground penetrating radar is used as high-efficiency nondestructive testing equipment, is widely applied to the fields of railway subgrade detection and the like, and can realize rapid detection and positioning of diseases in the subgrade. Along with the rapid development of railway transportation industry, higher requirements are put on the accuracy, efficiency and adaptability of road base detection. The multi-frequency antenna combination technology can meet the requirements of different detection depths and resolutions, and is increasingly applied to vehicle-mounted ground penetrating radars. Traditional multi-frequency antenna combination control is mostly dependent on a fixed frequency allocation scheme, or frequency adjustment is carried out only according to simple detection scene parameters, and the comprehensive sensing and dynamic adaptation capability of a complex detection scene is lacked. Meanwhile, in the aspect of interference suppression, a single interference avoidance means is often adopted, so that the method is difficult to effectively cope with a changeable electromagnetic interference environment. Therefore, the prior art has the problems of low matching degree of frequency combination and detection scene and requirement, poor interference suppression effect, untimely strategy adjustment and the like, and influences the detection performance and application effect of the vehicle-mounted ground penetrating radar. Disclosure of Invention The embodiment of the invention provides a multi-frequency antenna combination control device and method for a vehicle-mounted ground penetrating radar. In a first aspect, an embodiment of the present invention provides a method for controlling a combination of multiple frequency antennas for a vehicle-mounted ground penetrating radar, which is applied to a device for controlling a combination of multiple frequency antennas for a vehicle-mounted ground penetrating radar, and the method includes: Acquiring real-time detection scene parameters of a vehicle-mounted ground penetrating radar, and determining frequency combination requirement information through association adaptation analysis of the real-time detection scene parameters and built-in coupling rules in a preconfigured multi-frequency antenna dynamic coupling model, wherein the frequency combination requirement information is associated with the detection range and target identification requirement of the vehicle-mounted ground penetrating radar; Combining the frequency combination demand information and the self-adaptive frequency scheduling algorithm, and determining the working frequency allocation result of each antenna through spectrum characteristic analysis, antenna unit working threshold association processing and multi-frequency cooperative constraint verification in different frequency intervals, wherein the working frequency allocation result corresponds to the initial working parameters of each antenna; Performing interference source characteristic identification, inter-antenna frequency coupling path analysis and coupling strength association processing based on the working frequency allocation result, and introducing a preset interference prediction rule to execute electromagnetic coupling interference suppression operation to obtain an interference suppressed frequency allocation result; Acquiring detection scene data of the ground penetrating radar after interference suppression operation, and acquiring the corresponding interference suppression detection scene parameters of the vehicle-mounted ground penetrating radar by combining dynamic change characteristics and time sequence relativity of the real-time detection scene parameters; and carrying out multidimensional characteristic association on the interference suppression detection scene parameters and the real-time detection scene parameters to generate a multi-frequency antenna combination adjustment strategy containing transmission power adjustment information and frequency switching time sequence information, wherein the multi-frequency antenna combination adjustment strategy associates the working frequency allocation result and the interference suppression effect of each antenna. In a second aspect, an embodiment of the present invention provides a multi-frequency antenna combination control device for a vehicle-mounted ground penetrating radar, including: A processor; A storage device on which a computer program is stored, When the computer program is executed by the processor, the processor realizes any multi-frequency antenna combination control method for t