1. GPS orbit determination;Abbot,1986
2. Accuracy of international time and frequency comparisons via Global Positioning System satellites in common view;Allan;IEEE Trans. on Instrumentation and Measurement,1985
3. New results on the accuracy of the C/A code GPS receivers;Ashjaee;Proceedings of the First International Symposium on Precise Positioning with the Global Positioning System,1985
4. Real-time first-order survey with GPS single-frequency C/A code;Ashjaee,1986
5. A new precision time and frequency source for stationary PTTI applications;Ashjaee;Proceedings of the Thirteenth Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting,1983