AN/APQ-174/186 Multi-Mode Radar

The AN/APQ-174/186 Multi-Mode Radar family protects aircrew and aircraft by lowering the probability of detection by enemy forces.

The APQ-174/186 Multi-Mode Radar (MMR) family provides terrain following and terrain avoidance for a wide variety of military aircraft. The MMR allows safe flight down to a 100-ft set clearance at night, in adverse weather, and in high-threat environments. It lowers the probability of detection by enemy forces and increases mission success through terrain masking and minimizing time spent in threat range. It reduces risk to the aircrew and the aircraft by balancing the low-level terrain clearance altitude with flight safety considerations.

The MMR uses proven control algorithms, high-reliability designs, and extensive built-in-test software to provide a high-confidence system with high user acceptability. MMR modes include:

  • Terrain following (TF)
  • Low power/low velocity (LP/LV) TF
  • Terrain avoidance (TA)
  • Ground mapping (GM)
  • Air-to-ground ranging
  • Weather detection (WX)
  • Beacon interrogation (BCN)
  • Cross scan modes (TF/TA, TF/GM, TF/WX, TF/BCN)

The APQ-174B is deployed on the U.S. Army Special Operations MH-60K and MH-47E aircraft. The APQ-186 is a derivative of the APQ-174 currently being developed for the U.S. Special Operations Command (USSOCOM) CV-22.