Image
from article Autopilot
Basic elements of an autopilot system.
Search Results
Search Results
Refine this search
Search result paging links
151 results
Image
from article Autopilot
Typical longitudinal autopilot control loop.
Image
from article Autopilot
Typical directional autopilot control loop.
Image
from article Polar navigation
Polar stereographic graticule with polar grid.
Image
from article Polar navigation
An astrocompass.
Image
from article Polar navigation
Ship negotiating pack ice.
Image
from article Satellite navigation systems
Positioning by trilateration. The measured ranges to three position references, S1, S2, and S3, determine the position of P. (Reproduced by permission of Ganga-Jamuna Press, Lincoln, MA)
Image
from article Satellite navigation systems
For a constellation of N satellites, the pseudoranges pi, i = 1, 2, …, N, are given by pi = (xi − x)2 + (yi − y)2 + (zi − z)2 − b, where the (xi, yi, zi ) are the known satellite positions. Pseudorange measurements are needed from at least…
Image
from article Satellite navigation systems
Role of measurement geometry in positioning. The quality of a position estimate depends upon both the quality of the range measurements (ε) and their geometry (θ). Shaded regions represent the uncertainties in the position estimates. (Reproduced by…
Image
from article Satellite navigation systems
GPS baseline constellation. Each satellite is identified by a two-character code: A letter identifies the orbital plane (A through F), and a number identifies the satellite slot number in the plane (1 through 4). The satellite altitude is roughly…
