Electro-Optical Tracking System

Electro-Optical Tracking System

An electro optical tracking system is a set of sensors that is used to determine the location of an object.electro optical tracking system This type of system is able to track the object without wires and is used in various applications, such as military operations and test and evaluation. It has an edge over other systems in the field, including radar and laser-based tracking.

Optical tracking systems work by having the camera(s) “watch” one or more identifying marks in the scene.electro optical tracking system These marks are usually made by using a retroreflective tape or markers (such as the two styrofoam balls on this person's glasses). Once the cameras have identified these objects, they can then triangulate their location and orientation, thereby giving them three-dimensional position information.

Optical trackers have the advantage of being completely wireless and capable of tracking multiple points simultaneously. This makes them particularly useful in applications where the movement of an object or people is desired but a physical connection cannot be established. They are also useful for avoiding the problem of occlusion, which occurs when another object or person comes between the tracked point and the camera. Optical tracking systems can solve this problem by watching several angles of the tracked point to triangulate its position.

The HG-OT-385 electro optical tracking system(EOTS) is an important part of the ship fire control weapon system and has been in service in South Korean ships since 2009. It is used to detect, search, and track aerial targets and transmit accurate target position information. Raytheon's El Segundo division is developing a new version of the system for the ROK Flying Tiger vehicle.

One of the major issues faced by electro-optical tracking systems on moving platforms is the instability caused by vibrations and wind resistance torques in motion. Typically, such systems use sliding mode control to suppress the effect of external disturbances and unknown dynamic signals on the stability of the system. However, this method requires significant switching gain and can lead to serious chattering in the system, which limits its effectiveness.

The proposed methodology addresses this issue by integrating the ESKF estimation-suppression mechanism as an inner loop. The ESKF estimates the states of the system and the dynamics of the external perturbations, thereby enhancing the robustness of the system against internal and external disturbances. It also mitigates the impact of system measurement noise, which is a significant source of disturbances in the electro-optical tracking system.

A comparison of the results of the system demonstrated that the effectiveness of the approach has been proven in terms of continuous tracking during target separation. To achieve this, the theoretical trajectory of the target is corrected by the error correcting value first. Then, the fuzzy clustering association algorithm is applied to calculate the similarity between the measured data of the target from the sensors and the corrected theoretical trajectory. This helps to identify the authenticity of the measured data and thus enhance the accuracy of the tracking results.

Tags:electro optical system | electro optical systems | electro optical targeting system