@misc{indiciae746757a3a071,
  title = {Passive Tracking System and Method},
  author = {Arndt, G. Dickey and Ngo, Phong H. and Chen, Henry A. and Phan, Chau T. and Bourgeois, Brian A. and Dusl, Jon and Hill, Brent W.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20040000336},
  note = {Source identifier: 20040000336}
}