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Why GPS-Denied Navigation Matters

The Problem

Modern drones are dependency-complete on GPS. GPS signals are:

  • Weak (-125 dBm outdoor)
  • Easy to jam (1 Watt jammer = 10km radius disruption)
  • Subject to spoofing (Russia has deployed vehicle-mounted GPS spoofers)
  • Useless indoors

Ukraine Has Already Won the GPS War

In 2022-2024, both sides deployed extensive GPS jamming:

  • Russia: Vehicle-mounted Pokemon jammers disrupted Ukrainian drones at scale
  • Ukraine: Developed Palybitsa and other anti-jamming tech
  • Result: Both sides now operate primarily GPS-denied

The lesson is clear: drones that can't fly without GPS are already obsolete in contested environments.

Market Drivers

Military

  • $50K+ proprietary GPS-denied systems dominate defense procurement
  • Ukraine War demonstrated mass drone deployment with electronic warfare
  • DoD seeking alternatives to costly military-only solutions

Commercial

  • Warehouse inspection: GPS unavailable indoors
  • Search & rescue: Forests block GPS signals
  • Disaster response: Infrastructure damage takes down GPS ground stations
  • Urban air mobility: Urban canyons create GPS black holes

Current Solutions Are Broken

Solution Problem
Military GPS-denied nav $50K-500K per unit, proprietary, export-controlled
Academic SLAM code Unmaintained, no docs, single-use research
Consumer drones Indoor = "no signal", no obstacle avoidance in GPS-denied
None Just accept GPS jamming

GhostPilot Solution

GhostPilot provides open-source, commercial-ready GPS-denied navigation:

  • Built on proven components (VINS-Mono, Nav2)
  • Natural language mission control (agentic AI)
  • No cloud dependency (privacy-preserving, jam-proof)
  • Runs on $500 edge hardware (Jetson Orin)

The Gap GhostPilot Fills

Cost:           $500           $5K            $50K+
               ┌───────────────┼─────────────────┼──────►
               │  GhostPilot   │   Skydio        │ Military
               │  (open)       │   Enterprise   │ Systems
               │               │                │
Capability:    Basic Nav     Advanced Nav    Full GPS-denied
                         ┌─────────────────┘
                         │  The gap we're filling
                         │
               ┌─────────┴─────────────────────┐
               │  Open-source GPS-denied nav   │
               │  with agentic AI control      │
               └──────────────────────────────┘

Technical Approach

Visual-Inertial SLAM

Fuses camera + IMU data to estimate 6DOF pose without GPS:

  • Camera: Tracks visual features frame-to-frame
  • IMU: Provides motion prior for robustness
  • Fusion: Optimizes trajectory via bundle adjustment

This is proven technology used in:

  • Smartphone AR (Apple ARKit, Google ARCore)
  • DJI drones (visual tracking since Phantom 4)
  • Autonomous vehicles (visual odometry)

Why Not Just Use RTK GPS?

RTK (Real-Time Kinematics) provides centimeter accuracy but:

  • Requires base station within 10km
  • Still vulnerable to jamming
  • Indoors = no signal at all
  • Adds $2K+ to hardware cost

Why Not LiDAR SLAM?

LiDAR is excellent for outdoor GPS-denied nav but:

  • LiDAR sensors: $1K-30K (Velodyne, Ouster)
  • Heavy, power-hungry
  • Indoors: limited range for FPV-size drones
  • VINS-Mono on RealSense D435i = $350 total

The Open-Source Advantage

GhostPilot is not trying to compete with military systems. Instead:

  1. Democratize technology proven in defense
  2. Accelerate research and startup innovation
  3. Prove open-source can match proprietary for non-critical applications
  4. Build community for sustained development

Future

As autonomous drone regulations evolve, GPS-denied capability becomes mandatory:

  • FAA Beyond Visual Line of Sight (BVLOS) rules
  • Urban air mobility certification
  • Warehouse automation safety standards

GhostPilot puts this capability in the hands of researchers, developers, and builders today.