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  2. Bearing (navigation) - Wikipedia

    en.wikipedia.org/wiki/Bearing_(navigation)

    In nautical navigation the relative bearing of an object is the clockwise angle from the heading of the vessel to a straight line drawn from the observation station on the vessel to the object. The relative bearing is measured with a pelorus or other optical and electronic aids to navigation such as a periscope , sonar system , and radar systems .

  3. Course (navigation) - Wikipedia

    en.wikipedia.org/wiki/Course_(navigation)

    A navigator determines the bearing (the compass direction from the craft's current position) of the next waypoint. Because water currents or wind can cause a craft to drift off course, a navigator sets a course to steer that compensates for drift. The helmsman or pilot points the craft on a heading that corresponds to the course to steer. If ...

  4. Axes conventions - Wikipedia

    en.wikipedia.org/wiki/Axes_conventions

    Some words commonly used were introduced in maritime navigation. For example, the yaw angle or heading, has a nautical origin, with the meaning of "bending out of the course". Etymologically, it is related with the verb 'to go'. [6] It is related to the concept of bearing. It is typically assigned the shorthand notation ψ. [7]

  5. GPS signals - Wikipedia

    en.wikipedia.org/wiki/GPS_signals

    5 i is the ranging codes for i; also denoted as I5 n and Q5 n. U and V i are intermediate codes, with U not depending on phase or PRN. The output of two 13-stage LFSRs with clock state t' is used: XA(x,t') has feedback polynomial x 13 + x 12 + x 10 + x 9 + 1, and initial state 1111111111111 2.

  6. Heading (navigation) - Wikipedia

    en.wikipedia.org/wiki/Heading_(navigation)

    True course is 120°, the Variation is 5° West, and the Deviation is 1° West. T: 120° V: +5° M: 125° D: +1° C: 126° Therefore, to achieve a true course of 120°, one should follow a compass heading of 126°. True course is 120°, the Variation is 5° East and the Deviation is 1° East. T: 120° V: −5° M: 115° D: −1° C: 114°

  7. List of Ford bellhousing patterns - Wikipedia

    en.wikipedia.org/wiki/List_of_Ford_bellhousing...

    Note: this is commonly called the Ford Small-block V8 pattern, though it is used in some "big block"-sized V8's as well as some V6's and I6's. 200 I6 1978-1983 only, partial (4 of 6 bolts) pattern. 250 I6 (except Australian 250/4.1) 255 V8; 289 V8 - (made after August 3, 1964) - had 6 bolts holding bellhousing to block; 302 Cleveland (Australia)

  8. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    5.307 × 1010 – 8.349 × 10 −11 = 4.472 × 1010. This fraction is subtracted from 1 and multiplied by the pre-adjusted clock frequency of 10.23 MHz: (1 – 4.472 × 1010) × 10.23 = 10.22999999543. That is we need to slow the clocks down from 10.23 MHz to 10.22999999543 MHz in order to negate both time dilation effects.

  9. Automatic direction finder - Wikipedia

    en.wikipedia.org/wiki/Radio_Magnetic_Indicator

    The magnetic bearing to the station in this case is 350°. The ADF indicators are a kind of navigational display consisting of a dial and a needle that rotates around the dial and points to the beacon. This needle suggests the "to" bearing of the beacon, and to fly the "from" bearing, 180° needs to be added or subtracted from the reading. [7]