Real-time simulation method and system of coherent lognormal distribution radar clutters

The invention discloses a real-time simulation method and system of coherent lognormal distribution radar clutters, belongs to the technical field of radar and aims to solve the technical problem that the real-time performance of simulation cannot easily meet demands of real-time radar parameter and cluster scene changing due to the fact that radar clutter simulation is realized on the basis of a software platform or radar clutters are generated on the basis of playback of stored clutters simulated by software in advance. White noises are produced through a digital circuit, complicated mathematical operation and conversion are solved by establishing a function lookup table, a mapping relation among shape parameters, spectral width and filter coefficients is established by discretizing the shape parameter range and the spectral width range of expected clusters, real-time filter coefficients are acquired in a table lookup manner, a parameter-variable clutter spectrum matched filter is obtained, the coherent log