A method and system for creating a signal with an infinite duration waveform that can be changed arbitrarily

Abstract

The invention relates to the technical field of signal establishment and discloses an unlimited duration waveform arbitrarily changeable signal establishment method and system. The system employed bythe method comprises a clock module, baseband signal simulators, combiners and a vector signal modulator. The clock module is connected with a timing module, the baseband signal simulators and the vector signal modulator through signal lines. The timing module is built in a master control computer through a PCI jack and is connected with the baseband signal simulators through signal lines. The baseband signal simulators are connected with the combiners through radio frequency cables. The combiners are connected with the vector signal modulator through the radio frequency cables. The vector signal modulator is connected with the master control computer. According to the method and the system, various composition components are controlled to carry out cooperative work through the master control computer, and unlimited duration waveform arbitrarily changeable signal establishment can be realized. The method and the system are simple in mode structure, are stable and reliable, are high inuniversality and reusable degree, are fast in establishment speed, low in realization difficulty and low in development cost and have a good application prospect.

Description

technical field [0001] The present invention relates to the technical field of signal creation, in particular to a method and system for creating a signal in which infinite duration waveforms can be changed arbitrarily. Background technique [0002] In radar, communication, aerospace, electronic measurement and many other fields, how to create a signal with an infinite duration waveform that can be changed arbitrarily is a key technology and problem that has attracted much attention. Compared with the traditional method of using FPGA board programming to realize signal creation, the mode of signal creation based on microwave device shelf products has the advantages of simple structure, stability and reliability, short development cycle, and strong versatility, and has gradually become the main method for current signal creation. One of the implementation methods. [0003] The basic principle of signal creation based on microwave devices is: first, the digital waveform data ...

AI Technical Summary

Problems solved by technology

However, the digital waveform data needs to be downloaded in advance before the signal is created. During the signal creation process, the digital waveform cannot be downloaded continuously. It can only be generated based on the digital waveform that has been downloaded to the memory of the baseband signal simulator, using waveform combination and loop playback. Signal

Therefore, the waveform of the signal that can be generated is limited by the digital signal waveform that is pre-downloaded into the memory, and it is not possible to realize arbitrary changes in the waveform of infinite duration.

Although the signal of this waveform has very good practical value, it is still difficult to meet the needs of many applications and has certain limitations.

For example, when used to create radar signals, it can meet the simulation requirements of radar emission signals, but cannot meet the simulation requirements of radar echo signals

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