Which of the following is not a type of electronic deception jammer?

• A. Population Inversion
• B. Repeater-Jammers
• C. Range-Gate Stealers
• D. Velocity-Range Gate Stealers

Answer: (A)

Electronic deception jammers are designed to mislead radar by tampering with the information the radar uses to track targets. Among the options, the ones that fit this idea are methods that actively manipulate the radar signal or its processing to create false targets or distorted range and velocity information.

Repeater-jammers work by receiving the radar signal and retransmitting it with alterations in timing, phase, or amplitude, effectively creating misleading echoes or phantom targets. Range-gate stealers inject signals that disrupt how the radar determines range, causing incorrect distance measurements. Velocity-range gate stealers tamper with the Doppler information and gate alignment, making target speed and position appear differently or producing false tracks.

Population inversion, on the other hand, is a physics condition where more atoms are in excited states than in lower energy states, which is essential for achieving laser amplification. It’s a fundamental concept in laser theory, not a method used to deceive radar. So it isn’t a type of electronic deception jammer.