Tomographic scanning imager

Abstract

The invention provides a tomographic scanning imager. The tomographic scanning imager comprises an infinitive state machine ordered cloud signal generator, a radio frequency emission module (2), a switch combination module (3), a receiving module and a correlation interference imaging processing module (8), wherein the infinitive state machine ordered cloud signal generator generates two ordered cloud signals, namely a first branch ordered cloud signal and a second branch ordered cloud signal; the radio frequency emission module (2) is used for receiving the first branch ordered cloud signal and transforming the first branch ordered cloud signal into radio frequency to be emitted out; the switch combination module (3) is used for controlling a working time sequence of the receiving module,eliminating clutter of the ordered cloud signals and outputting the ordered cloud signals to the receiving module; the receiving module is used for performing delay and gain processing on the orderedcloud signals, and the processed signals are output to the correlation interference imaging processing module (8); and the correlation interference imaging processing module (8) performs AD transformation, clutter cancellation and correlation interference processing on the ordered cloud signals obtained after delay and gain processing, so that tomographic imaging of a detection target is completed.

Description

technical field [0001] The invention relates to the technical field of radar remote sensing, in particular to a tomographic scanning imager. Background technique [0002] The tomography scanner is a non-destructive detection instrument for detecting subsurface structures. It uses the penetrating ability of electromagnetic waves to the surface to emit electromagnetic waves carrying ordered cloud signals from the surface layer to the interior. The electromagnetic waves are scattered on the interface where the characteristics of the medium change. By receiving the scattered echo signal, according to its parameters such as time delay, shape and spectral characteristics, the target position, medium structure and properties can be interpreted. On the basis of data processing, image restoration and reconstruction technology is applied to scan and image the target. processing in order to achieve a true and intuitive representation of the subsurface target. [0003] Since the existi...

AI Technical Summary

Problems solved by technology

[0003] Due to the use of coherent detection technology based on shock pulse signal and frequency-modulated continuous wave signal in the existing technology, the echo signal is continuous and coherent, so it is always affected by various clutter

Clutter is usually very strong, and it is difficult to eliminate as the position changes, making target detection difficult

Almost all existing means are difficult to get rid of the above effects

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