Abstract
Multi-sensor imaging systems using the global navigation satellite system (GNSS) and digital magnetic compass (DMC) for geo-referencing have an important role and wide application in long-range surveillance systems. To achieve the required system heading accuracy, the specific magnetic compass calibration and compensation procedures, which highly depend on the application conditions, should be applied. The DMC compensation technique suitable for the operation environment is described and different technical solutions are studied. The application of the swinging procedure was shown as a good solution for DMC compensation in a given application. The selected DMC was built into a system to be experimentally evaluated, both under laboratory and field conditions. The implementation of the compensation procedure and magnetic sensor integration in systems is described. The heading accuracy measurement results show that DMC could be successfully integrated and used in long-range surveillance systems providing required geo-referencing data.
Highlights
The multi-sensor imaging systems have a very important role and wide applications in long-range surveillance and security systems [1,2,3,4,5]. They are designed as the adaptable modular system with the capability of managing sensors mounted at the sensor head and fusion of the sensor data to provide data regarding objects of interest inside a field of regard (FOR)
In this paper we explore the application of the digital magnetic compass (DMC) technology in the long-range multi-sensor electro-optical system to provide support for selected target geo-referencing
After additive correction applied on field heading angle measurement error determination, we found that for a set of three predefined targets and two measurements for each target, the residual measurement (a)
Summary
The multi-sensor imaging systems have a very important role and wide applications in long-range surveillance and security systems [1,2,3,4,5]. They are designed as the adaptable modular system with the capability of managing sensors mounted at the sensor head and fusion of the sensor data to provide data regarding objects of interest (target) inside a field of regard (FOR). All sensor data are collected, analyzed, and presented to the human operator on the operator’s console. That task is usually achieved using a laser range finder (LRF), a global navigation satellite system (GNSS) receiver, and a heading sensor (north finding) [6]
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