Detect and Avoid Alerting Logic for Unmanned Systems (DAIDALUS) is a software library that implements a configurable detect and avoid (DAA) concept intended to support the integration of Unmanned Aircraft Systems into civil airspace. DAIDALUS serves as a reference implementation of the functional requirements specified in DO-365, the Minimum Operational Performance Standards (MOPS) for Unmanned Aircraft Systems (UAS) developed by RTCA Special Committee 228 (SC-228).
This repository includes a prototype implementations written in Java and C++. The repository also includes the formal specification of DAIDALUS core algorithms witten the Prototype Verification System (PVS).
The core functionalities implemented by DAIDALUS include
- detection logic,
- alerting logic based on hazard and non-hazard volumes, and
- instantaneous and kinematic maneuver guidance in the form of suggestive guidance (i.e., bands) and directive guidance (i.e., preferred direction and velocity vector).
A draft of user guide is available at https://nasa.github.io/daidalus.
The library can be compiled using the Unix utility make with the
provided Makefile in both the Java and
C++ directories. From the directory Java,
the make command produces a jar file in the directory Java/lib.
From the directory C++, the make command will generate a static library
in C++/lib.
The sample application DaidalusExample, which is available in
Java and
C++, illustrates the main
functionalities provided by DAIDALUS including reading/writing
configuration files, detection logic, alerting logic, maneuver
guidance logic, and computation of loss of well-clear contours. This
application can be compiled using the provided Makefile.
To run the example application in a Unix environment, type from the
directory Java (or C++):
$ ./DaidalusExample
Other sample applications that illustrate DAIDALUS functionalities on encounter files are provided in Java and C++.
For technical information about the definitions and algorithms in this repository, visit https://shemesh.larc.nasa.gov/fm/DAIDALUS.
v2.0.2b, May-31-2021
The code in this repository is released under NASA's Open Source
Agreement. See the directory LICENSES; see also the copyright notice at the end of this file.
Aaron M. Dutle (aaron.m.dutle@nasa.gov), NASA Langley Research Center.
The DAIDALUS logo was designed by Mahyar Malekpour, NASA Langley Research Center.
Copyright 2021 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. All Rights Reserved.
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