What is ECCM and give two examples.

• A. ECCM are encryption techniques for radar data; examples include AES and RSA.
• B. ECCM are techniques to counter EW and maintain radar performance; examples include frequency agility and adaptive signal processing.
• C. ECCM are methods to jam enemy radars; examples include broad-spectrum noise and barrage.
• D. ECCM are mechanical shielding methods; examples include radar domes and shielded enclosures.

Answer: (B)

ECCM stands for Electronic Counter-Countermeasures. It refers to techniques designed to counter electronic warfare efforts aimed at degrading radar performance and to keep radar operation robust in contested environments. Two solid examples are frequency agility, which involves changing the radar’s transmission frequency rapidly or in a controlled pattern to dodge jammers and reduce susceptibility to interference, and adaptive signal processing, which uses real-time algorithms to filter out noise, suppress jamming, and preserve target detection even when the spectrum is crowded. These approaches help the radar maintain performance by making it harder for adversaries to disrupt it and by extracting the useful signal from interference. The other options describe encryption, direct jamming, or physical shielding, which are not ECCM concepts.