A precise positioning method for a target reporting system and a target reporting system

Abstract

The invention discloses a precise positioning method for a target reporting system, which comprises: overlapping a thermal imaging sensor and an image sensor for framing; using the thermal imaging sensor to continuously acquire thermal images of target paper, and analyzing the thermal images to obtain initial coordinate information P of the impact point and time information T; use a visible light image sensor to continuously acquire image H, select several frames before T and after T in image H, a group of image information I centered on P; analyze I to obtain precise coordinate information K of the impact point; Extract the target paper image feature information in the image H; obtain the target report information according to the precise coordinate information K and the target paper image feature information. Further, a target reporting system is also disclosed. The invention can effectively eliminate false alarms generated when other non-bullets penetrate the target paper, and the analysis difficulty and required time are greatly reduced, the implementation is simpler, the use is more convenient, and the acquisition of target information is more accurate and reliable.

Description

technical field [0001] The invention belongs to the technical field of target systems, and relates to a precise positioning method for a target reporting system and the target reporting system. Background technique [0002] At present, in the automatic target reporting system for live ammunition shooting with light weapons, the core method for detecting the position of the impact point is mainly based on ultrasonic technology or image recognition technology. The defects of the system using a single ultrasonic technology are: 1. Since the transmission speed of ultrasonic waves is affected by various external factors such as air temperature and air pressure, the accuracy error of the target reporting cannot be controlled below 5mm; 2. When changing the target paper, the target paper is required. The position is accurately attached to the fixed position of the target paper, or additional correction methods are required, otherwise target reporting errors will occur. The target ...

AI Technical Summary

Problems solved by technology

The defects of the system using a single ultrasonic technology are: 1. Since the transmission speed of the ultrasonic wave is affected by various external factors such as air temperature and air pressure, the accuracy error of the target reporting cannot be controlled below 5mm; 2. When changing the target paper, the target paper is required. The position is accurately attached to the fixed position of the target paper, or additional correction methods are required, otherwise target reporting errors will occur

The target reporting system using a single image recognition technology has a high target reporting accuracy, but the disadvantages are: 1. It is difficult to distinguish the "bullet holes" produced by non-bullets or ricochets from the bullet holes formed by real bullets, so it is easy to produce False alarms; 2. In live ammunition shooting, there will often be slight overlap or even complete overlap of bullet holes. A single image recognition system cannot detect this difference, and it is prone to false alarms; 3. If the image recognition target reporting system needs to To achieve real-time target reporting, the algorithm needs to monitor the image changes in the entire target range in real time throughout the whole process, which requires high computing power for the image recognition system hardware

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