subradular
/sʌbˈrædʒʊlər/Definitions
1. adjective
relating to or denoting a position or state below or subordinate to a radar or other system of detection.
“The subradular system was used to track enemy aircraft during the war.”
2. noun
a position or state below or subordinate to a radar or other system of detection.
“The subradular zone is critical for understanding the effectiveness of the radar system.”