1. The SDO system uses GPS and train speed integration to estimate position . 2. They were ordered to proceed to the best estimated position of the ships. 3. The remaining search space is reduced to the part before or after the estimated position . 4. By mid-December the estimated position was from Wrangel Island. 5. During the night, Warwick ordered his cannons to continually bombard the estimated position of the Yorkists'encampment. 6. By comparing the fix and the estimated position corrections are made to the aircraft's heading and groundspeed. 7. While the destroyer steamed toward the estimated position of the sail, she searched for evidence of a submarine. 8. If there is no positional information available, a new dead reckoning plot may start from an estimated position . 9. The three destroyer escorts tracked the U-boat, raining down a barrage of depth charges on her estimated positions . 10. Thus a regular grid pattern should be obtained if the estimated position is perfectly linear with the true position.
