Research On Labeling Of Electromagnetic Signal Label

The receiver or sensor acquires the target's electromagnetic data by loading a label in an own side electromagnetic wave carrying a modulated signal,and then integrates and processes the target electromagnetic data and the electromagnetic wave information carrying the modulated signal through electromagnetic network big data,thereby Realize the representation of electromagnetic big data,and finally use big data for mining and reconstruction.Among them,a complete electromagnetic space big data perception network is the foundation.Without a complete perception network,it is impossible to obtain full-factor,multi-domain electromagnetic data,and data mining in electromagnetic space is impossible to talk about.The perception network is composed of perception nodes,and the space-time label of electromagnetic waves is the medium through which the perception nodes acquire electromagnetic space data.Therefore,the electromagnetic space-time label is the basis of the entire subject.The main research content of this article is to construct a network transmission theory and prototype system of a precise space-time benchmark.This article mainly completed the following work.1.The system architecture of the label is initially established,based on the working principle of the label and the encoding method of the transmitting.The architecture is composed of radiation source equipment,receiver equipment,wireless transmission part and reference backbone network.The architecture contains upstream signals,downstream signals and static characteristic signals.This article details the functions of the four parts and the data composition of the three signals in the system architecture,and demonstrates the data changes of the signals between the different parts in the form of data streams.2.A model of dynamic data is proposed based on the label system architecture,including a motion identification code,a platform identification code,a time position code,and a space position code,which are used to identify the radiation source.3.The label theory is proposed based on the label system architecture,including label composition,loading method,and matching mechanism.The label consists of an identification code and a time corresponding code,where the identification code is used to identify the radiation source,and the time corresponding code is used to distinguish the transmission sequence of the signal.The loading method of the label is related to the specific signal,mainly including two ways of adding it to the baseband information and transmitting it with the signal and transmitting it separately as a sequence.Label matching is mainly based on the principle of first-come-first-served,including identification code matching and time corresponding code matching.4.Based on the wireless transmission link of the label system architecture,and the label encoding and loading method of the uplink of the TDRSS(Tracking and Data Ralay Satelite System)satellite communication signal in a specific receiving and transmitting situation,a software simulation platform of the label system architecture is established.The software simulation platform mainly includes a digital processing simulation platform based on Matlab;an RF simulation platform based on ADS behavior-level simulation;and a baseband-RF joint simulation platform based on SystemVue.Each of the three platforms has its own focus and is independent and unified,laying the foundation for the analysis and improvement of the label system architecture and theory.5.Based on the wireless transmission link of the label system architecture and software simulation platform,a hardware test platform of the label system architecture is established.The hardware test platform consists of digital module,radio frequency module and antenna module.The performance of the three modules and the performance of the hardware test platform are test in the article.