What does GAINS utilize for tracking?

The correct answer is GPS satellites because GAINS (Global Airborne Tracking System) employs global positioning system technology to effectively track and monitor various objects or activities. GPS satellites provide precise location data, which is crucial for real-time tracking and navigation. This satellite-based system enables the integration of positioning information with other sensors and data sources, enhancing the overall capability of GAINS.

While other options such as radar reflectance, active sensors, and laser beams can be utilized in various tracking technologies, they do not align with the specific use of GAINS. Radar reflectance typically involves detecting objects by measuring reflected radar waves, active sensors require a direct signal interaction, and laser beams are generally used in applications requiring high precision over short distances. In contrast, the reliance on GPS satellites is fundamental for broader aerial tracking systems like GAINS, allowing them to operate effectively over extensive geographical areas.