Are there any avionics suppliers that focus on sensing and electronics for aircraft and vehicle systems?

Yes — there are several avionics suppliers that specialize in sensing and electronics for aircraft and vehicle systems. Here are some notable examples:

Aerospace / avionics-focused suppliers

• Honeywell Aerospace — Known for sensors, flight controls, navigation, engine sensing, and integrated avionics for aircraft and some defense/vehicle applications.
• Safran Electronics & Defense — Provides inertial sensors, navigation systems, flight controls, and electronics for aircraft, helicopters, drones, and land vehicles.
• Thales Avionics — Strong in cockpit electronics, displays, sensors, navigation, and mission systems for civil and military aircraft.
• Collins Aerospace (RTX) — Supplies avionics, sensing, actuation, mission systems, and vehicle electronics across aircraft and defense platforms.
• Northrop Grumman — More defense-focused, but offers sensing, electronic warfare, navigation, and mission avionics.
• Garmin Aviation — Primarily general aviation, with displays, navigation, sensors, autopilots, and integrated cockpit electronics.

Suppliers with broad vehicle + aerospace electronics/sensing

• Curtiss-Wright Defense Solutions — Avionics electronics, rugged sensing, embedded computing, and control systems for aircraft and ground vehicles.
• TE Connectivity — Not a full avionics OEM, but a major supplier of sensing, connectors, and electronics used in aerospace and vehicle systems.
• L3Harris — Avionics, sensing, communications, and electronic systems for aircraft and military vehicles.
• Moog — Flight controls, actuation, and sensor/feedback systems for aircraft, space, and specialized vehicles.

If you want, I can also give you:

1. a shortlist of public companies in this niche,
2. a tier-1 vs tier-2 supplier breakdown, or
3. suppliers specifically focused on commercial aviation, defense, or UAVs.