Water radar system for detecting and identifying weak target in strong clutter environment

Abstract

The invention discloses an overwater radar system for detecting and identifying a weak target in a strong clutter environment, and belongs to the technical field of radar identification. The overwater radar system comprises an electromagnetic wave transmitting module, and the output end of the electromagnetic wave transmitting module is connected with the input end of a strong clutter suppression module; the output end of the strong clutter suppression module is connected with the input end of the target echo detection module; according to the invention, by arranging the echo data preprocessing and reprocessing module, extracted features can be effectively processed, weak features can be amplified, the recognition accuracy can be improved, meanwhile, the processing process can realize the function of recognizing a weak target by a radar, the function is powerful, and by arranging the feature recording and machine learning module, the recognition accuracy can be improved. After the weak target is recognized through the radar every time, the features of the weak target can be recorded and machine learning can be carried out, and when the same features are recognized in the next recognition, the recognition can be directly completed, so that the recognition accuracy and the recognition efficiency are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of radar identification, and in particular relates to a waterborne radar system for detecting and identifying weak targets in a strong clutter environment. Background technique [0002] Radar is a target detector, which mainly uses radio methods to find targets and determine their spatial positions. Radar is an electronic device that uses electromagnetic waves to detect objects. Because radar has such functional effects, it is widely used in many fields. [0003] When the surface unmanned vehicle navigates autonomously at sea, it can autonomously perceive and detect surface targets in the surrounding environment. Therefore, in recent years, unmanned platforms have played an increasingly important role in both the military and civilian fields. With the development of communication, artificial intelligence and other technologies, many technical bottlenecks faced in the development of unmanned ships have gra...

AI Technical Summary

Problems solved by technology

The open ocean environment causes the moving targets to be far away from the radar and is in a strong clutter environment. The radar's ability to detect and identify these targets faces huge challenges. The echo strength is very weak, the signal-to-clutter ratio is very low, the target is easily overwhelmed by the clutter, the signal-to-clutter ratio of a single pulse echo may be negative, and the target cannot be reliably detected

Images