1. The area of doubt surrounding a position fix is called an error ellipse. 2. This also had better time discrimination, giving better position fixes . 3. Periscopes are rarely used, except for position fixes and to verify a contact's identity. 4. Navigators relied on position fixes to correct for these errors. 5. In this mode, the device will average its position fixes . 6. In this way, two position fixes can be obtained daily. 7. Combining independent methods is used as a way to improve the accuracy of position fixes . 8. Using the Kaena Point lighthouse for a position fix , Hashizume decided to attack from the north. 9. To get a position fix the receiver must be in the range of at least four satellites. 10. Since all physical observations are subject to errors the resulting position fix is also subject to error.
