1. D. H. Oza, D. J. Niklewski, C. E. Doll, G. D. Mistretta, and R. C. Hart., Landsat-4 Orbit Determination Using TDRSS, this issue.
2. D. H. Oza, D. T. Bolvin, C. M. Cox, M. V. Samii, and C. E. Doll, Accuracy Assessment of TDRSS-Based TOPEX/Poseidon Orbit Determination, this issue.
3. F. J. Lerch, C. E. Doll, S. Luthcke, S. M. Klosko, J. J. McCarthy, W. F. Eddy, R. J. Williamson, and T. A. Williams, Precision Orbit Determination for TOPEX/Poseidon Using TDRSS Doppler Tracking Data, this issue.
4. C. J. Gramling and A. C. Long, Autonomous Navigation Using the TDRSS Onboard Navigation System (TONS), this issue.
5. Tracking and Data Relay Satellite System (TDRSS) Range and Doppler Tracking System Observation Measurement and Modeling;Phung,1980