Smoke / Obscurant Screen
Smoke grenades, vehicle-mounted smoke generators, or large-area obscurant systems that block visual and infrared sensors on drones. Prevents visually-guided drones from acquiring or tracking targets. A simple, cheap, and immediately available passive defense.
How It Works
Smoke canisters or generators produce dense clouds of particles that block visible light and, with specialized compositions (hexachloroethane, brass/titanium mixes), also block infrared wavelengths. This denies visually-guided drones the ability to see and track targets through the smoke. Some modern obscurants can also attenuate laser beams.
Technical Specifications
Advantages
- + Extremely cheap and widely available
- + Immediately deployable by any soldier
- + Blocks visual AND infrared sensors with proper mix
- + Effective against all visually-guided drones
- + No electronic signature — cannot be jammed
- + Can protect large areas quickly
Disadvantages
- − Temporary — wind disperses smoke rapidly
- − Also blocks friendly observation
- − Ineffective against radar-guided or GPS-guided drones
- − Requires constant re-deployment
- − Health hazard in enclosed spaces
- − Does not stop the drone — only blinds it
Tactical Deployment Tips
- ▸ Deploy smoke immediately when drone is spotted approaching
- ▸ Use multispectral smoke (IR-blocking) against thermal-equipped drones
- ▸ Combine with movement — use smoke to break contact
- ▸ Pre-position smoke pots along likely approach routes
- ▸ Train crews to deploy smoke as automatic drill on drone alert
Limitations & Vulnerabilities
- ⚠ Wind and weather rapidly degrade effectiveness
- ⚠ Only works against visually-guided weapons
- ⚠ Friendly forces also lose situational awareness
- ⚠ Cannot stop GPS or RF-guided munitions
Drones It Defeats
Drone types ranked by how well this system defeats them — tap any drone for details
ⓘ No public sources attached — values are doctrinal generalizations, not intelligence assessments.