TerrAInav Sim: An Open-Source Simulation of UAV Aerial Imaging from Satellite Data

TL;DR

TerrAInav Sim is an open-source simulation tool that generates UAV aerial images from map data, enabling diverse applications without physical drone deployment, and supports extensive dataset creation for deep learning and environmental monitoring.

Contribution

The paper introduces TerrAInav Sim, a novel open-source UAV simulation platform that generates realistic aerial images from map data, facilitating research and applications without real drone flights.

Findings

Supports customizable flight parameters and image overlap.

Can generate large datasets for city-scale applications.

Provides datasets for Memphis, TN, and 3D world comparison.

Abstract

Capturing real-world aerial images for vision-based navigation (VBN) is challenging due to limited availability and conditions that make it nearly impossible to access all desired images from any location. The complexity increases when multiple locations are involved. State-of-the-art solutions, such as deploying UAVs (unmanned aerial vehicles) for aerial imaging or relying on existing research databases, come with significant limitations. TerrAInav Sim offers a compelling alternative by simulating a UAV to capture bird's-eye view map-based images at zero yaw with real-world visible-band specifications. This open-source tool allows users to specify the bounding box (top-left and bottom-right) coordinates of any region on a map. Without the need to physically fly a drone, the virtual Python UAV performs a raster search to capture images. Users can define parameters such as the flight altitude, aspect ratio, diagonal field of view of the camera, and the overlap between consecutive images. TerrAInav Sim's capabilities range from capturing a few low-altitude images for basic applications to generating extensive datasets of entire cities for complex tasks like deep learning. This versatility makes TerrAInav a valuable tool for not only VBN but also other applications, including environmental monitoring, construction, and city management. The open-source nature of the tool also allows for the extension of the raster search to other missions. A dataset of Memphis, TN, has been provided along with this simulator. A supplementary dataset is also provided, which includes data from a 3D world generation package for comparison.