Spectrum data evaluation method for same-vehicle multi-machine communication system

Abstract

The invention relates to a spectrum data evaluation method for a same-vehicle multi-machine communication system, which is characterized in that the spectrum data evaluation method at least comprises an initialized step and a real-time use step; in the initialized step, the coupling degree of devices of a communication vehicle is calculated, the modeling of a vehicle body and an antenna is carried out at first in step 101, equipment spectrum parameters are set in the step 102, then the platform coupling degree of the communication vehicle is calculated through a moment method and a fast multipole method in the step 103, and the calculated coupling degree result is saved in the step 104 finally; and in the real-time use step, the spectrum data of the same-vehicle multi-machine communication system is evaluated, equipment spectrum and property information is obtained at first in the step 105, the device-level interference evaluation of the saved coupling degree parameters obtained in the step 104 and the equipment spectrum and property information is performed in the step 106, the system-level comprehensive evaluation is performed according to the equipment evaluation results obtained in the step 106, and an evaluation report is generated in the step 108 finally.

Description

Technical field [0001] The invention belongs to the field of spectrum management of vehicle-mounted communication systems, and particularly relates to a method for evaluating frequency data of a multi-machine communication system in the same vehicle, and is aimed at evaluating the compatibility of frequency assignments of multiple devices installed on a communication vehicle platform. Background technique [0002] Frequency data evaluation for multiple devices in the same vehicle is one of the key technologies of the radio frequency spectrum management system of the vehicle-mounted communication system. It directly affects the correctness and effectiveness of the frequency assignment and provides an auxiliary basis for the electromagnetic spectrum assignment. It is a spectrum management system The first problem to be studied and solved. The same-vehicle multi-machine communication system integrates multiple radios and other equipment with different frequency bands and functions. ...

AI Technical Summary

Problems solved by technology

The same-vehicle multi-machine communication system integrates multiple radio stations and other equipment with different frequency bands and functions. Due to the limitation of the active transceiver function of the antenna, these equipment cannot adopt traditional suppression measures such as shielding and filtering; and as the function integration becomes higher and higher , The spectrum is becoming more and more dense, and the adjacent channel, harmonic, intermodulation, intermediate frequency and image frequency and other types of interference between wireless systems will inevitably lead to the existence of some frequency self-interference bad points that affect each other in the system, resulting in The consequences of shortened communication distance, poor voice quality, and increased noise will lead to complete blockage of each communication channel in severe cases, resulting in the paralysis of the multi-machine communication system in the same vehicle or even the entire communication system

The main reason for the above problems is that the electromagnetic compatibility of the system is not considered when the frequency is assigned to the top-mounted equipment of the same-vehicle multi-computer communication system

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