Maneuvering weak target Track-before-Detect method of interactive multi-mode Bernoulli filtering

Abstract

The invention discloses a maneuvering weak target Track-before-Detect method of interactive multi-mode Bernoulli filtering. The maneuvering weak target Track-before-Detect method of interactive multi-mode Bernoulli filtering is characterized in that on the basis of Bernoulli particle filtering, an interactive multi-mode method is used to predict the sampling particle of each target state, and thena prediction particle is substituted into a traditional Bernoulli TBD (Track-before-Detect) algorithm to perform update estimation of the existing probability and distribution density of the targets.In the low signal to noise ratio situation, the maneuvering weak target Track-before-Detect method of interactive multi-mode Bernoulli filtering can effectively detect and track the weak maneuveringtarget, and can be more accurate in estimation of the target state.

Description

technical field [0001] The invention relates to the technical field of target detection and tracking, in particular to an interactive multi-mode Bernoulli filtering method for tracking before detection of maneuvering weak targets. Background technique [0002] The problem of infrared small target detection and tracking in complex background with low signal-to-noise ratio has been difficult to solve. The reason is that the obtained long-distance image, the target imaging area is small, the detected signal is relatively weak, and the target is submerged by a large amount of noise, resulting in the image The signal-to-noise ratio is very low, and the target cannot be detected from a single image, and the target may appear or disappear at unknown time points, and useful target features such as shape and texture cannot be obtained, making small target detection difficult. stand up. Single-frame image processing can no longer achieve reliable detection and tracking of the target,...

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the problem of target loss in the existing detection and tracking methods in the case of low signal-to-noise ratio (SNR) when weak and small targets undergo large maneuvers. Tracking method, which combines the interactive multi-mode method on the basis of Bernoulli particle filter, adopts the tracking algorithm before detection of particle filter, and realizes the precise detection and tracking of weak and small maneuvering targets

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