FPV Terminal Guidance AI

The Fourth Law, a Ukrainian robotics autonomy company, has developed the TFL-1 autonomy module, a software-based terminal guidance system designed for first-person view (FPV) drones. Introduced in 2023, the system addresses the limitations of traditional radio-controlled drones in contested electronic warfare environments. By transferring control of the drone during its final approach to an onboard computer, the TFL-1 allows the aircraft to lock onto a target and guide itself to impact even if the video link is severed or jammed. The company describes this “last-mile” autonomy as invulnerable to electronic warfare and capable of ignoring the radio horizon, thereby increasing pilot efficiency and mission success rates.

The software utilizes computer vision to track the outline of a target and guide the drone to its center. According to the manufacturer, the system integrates with various FPV hardware and ground control stations, including MilBeta and CrashDetect. The TFL-1 module is designed to work with different camera types, including twilight and thermal imaging sensors, which are often sourced from partner companies like Odd Systems. The company claims the addition of the autonomy module increases the cost of an FPV drone by only 10% while significantly raising the hit rate against ground, water, and air targets. The system supports a “cruise mode” to help drones pass through “curtain” jamming zones before engaging in terminal guidance.

Ukrainian forces are the primary operators of the TFL-1 technology. The Fourth Law has integrated its modules into its own codified unmanned aircraft system, the Lupynis-10-TFL-1, a 10-inch carbon-frame drone with a 30 km range and up to 4 kg of payload. Beyond its own hardware, the company states that its AI modules have been integrated by dozens of other UAV manufacturers, including Vyriy and Ukrainian Armor. The system has been combat-tested in Ukraine, where it has been used against a spectrum of targets. In May 2026, The Fourth Law released video evidence of the system in action, demonstrating strikes against moving ground targets, enemy infantry, boats maneuvering under “Shtora” electronic warfare countermeasures, and “Shahed”-class aerial targets.

The Fourth Law is developing subsequent iterations of its autonomy stack, labeled TFL-2 through TFL-5, which aim to expand capabilities from bombing and navigation to full autonomy and autonomous target selection. These modules are intended for use against ground, ISR, and FPV air targets, as well as in drone carrier platforms. The company positions its technology as a critical component in the defense of Ukraine and the broader “Free World,” arguing that AI-driven terminal guidance is essential for overcoming the pervasive electronic warfare threats posed by adversaries.