A Method for Accurately Generating Dual-polarization Passive Interference Pulse Signal

Abstract

The invention discloses a dual-polarized passive jamming pulse signal precise generation method used for generating a dual-polarized passive jamming pulse signal precisely. The dual-polarized passive jamming pulse signal precise generation method comprises the steps of: uploading original artificial data of artificial cloud, rain, ground, sea and foils through a production line mode; convoluting the original artificial data and a radar signal parameter to generate a passive jamming scattered echo signal; aligning with a pulse with the precision error less than 5 ns; downloading the data at a high speed; delaying precisely when the error is less than 5 ns; controlling precisely when a pulse width error is less than 5 ns; performing dual-polarized modulation on the signal to realize precise generation of the passive jamming pulse signal.

Description

technical field [0001] The invention relates to a method for accurately generating a dual-polarization passive interference pulse signal, which belongs to the technical field of radar semi-physical radio frequency simulation. Background technique [0002] Hardware-in-the-loop radio frequency simulation technology has become an important means to study radar defense and penetration problems, and passive jamming technology has the advantages of large interference space and frequency bandwidth, and has become a jamming method often used in radar defense and penetration technology. Reality and passive interference have become one of the key issues in the research of radar hardware-in-the-loop simulation technology. [0003] In the existing passive interference signal simulation technology, there are usually the following problems: 1) The passive interference clutter data is huge, the storage is limited, and the calculation is time-consuming; 2) The passive interference clutter p...

AI Technical Summary

Problems solved by technology

[0003] In the existing passive interference signal simulation technology, there are usually the following problems: 1) The passive interference clutter data is huge, the storage is limited, and the calculation is time-consuming; 2) The passive interference clutter pulse signal and radar CPI (radar Synchronous pulse signal) is not synchronous, due to the irregularity of clutter data and the inconsistency of the crystal oscillator source, there is usually jitter before and after the pulse edge; 3) The acquisition card based on high-speed DA, the clock signal set by the software timer when the internal clock mode works The crystal oscillator of the external clock signal is not synchronized; in the external synchronization signal mode, it only responds to the passive interference data playback triggered by the rising edge, and both modes can cause data drift in the clock pulse of the passive interference data playback; 4) High-speed DA FIFO 2 n The design of the playback data storage capacity makes it difficult for the traditional convolution method to directly meet this condition; 5) Modern radars generally have a dual-polarization function, and passive interference simulation is required to have a dual-polarization simulation function

The above-mentioned problems have restricted the popularization and application of passive jamming technology, therefore, urgently need to be solved

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