Boots – shoes – and leggings
Patent
1987-04-17
1989-03-28
Lall, Parshotam S.
Boots, shoes, and leggings
364459, 342352, G01S 302
Patent
active
048170011
ABSTRACT:
In a two way ranging system of the type employing pseudonoise spread spectrum codes there is provided a method for correcting the navigational system of one of two moving stations in space to compensate for relative drift. The point positions of the two stations are calculated by the on-board navigation systems of the individual stations at a first and subsequently at a second position after relative movement. The range from station 1 to station 2 is calculated employing the highly accurate pseudonoise communications ranging systems. The range uncertainty of the range calculation and the trigonmetric relation of the two calculated ranges and the include angle between the line of sight of the range directions is employed to calculate a range of uncertainty parallelogram more accurate that the navigation systems. When a station's point position is indicated by its navigation system to be outside the parallelogram, the navigation system is corrected to compensate for relative drift.
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Lundquist Alan E.
Spencer Billie M.
Zscheile, Jr. John W.
Black Thomas G.
Lall Parshotam S.
Scott Thomas J.
Sowell John B.
Starr Mark T.
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