What J-series message is for a space track?

What J-series message is for a space track?

• A. J3.0
• B. J3.1
• C. J3.6
• D. J3.7

Answer: (C)

In Link 16, the J-series messages are used to carry different kinds of track data, and the subtype designated for space-tracking information is J3.6. This subtype is defined specifically to convey space objects’ tracking data, so it’s the one used when you’re dealing with space tracks. The other J3 subtypes are tied to non-space data (for example, air or surface tracks or other categories), so they wouldn’t be used to report space-track information. In practice, you’d see J3.6 used whenever space objects are being tracked and shared across the network.

In Link 16, the J-series messages are used to carry different kinds of track data, and the subtype designated for space-tracking information is J3.6. This subtype is defined specifically to convey space objects’ tracking data, so it’s the one used when you’re dealing with space tracks. The other J3 subtypes are tied to non-space data (for example, air or surface tracks or other categories), so they wouldn’t be used to report space-track information. In practice, you’d see J3.6 used whenever space objects are being tracked and shared across the network.