@misc{indiciaec9684d2a0f9d,
  title = {An Empirical State Error Covariance Matrix for Batch State Estimation},
  author = {Frisbee, Joseph H., Jr.},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110010280},
  note = {Source identifier: 20110010280}
}