Error correcting method and apparatus Patent
Description of error correcting methods for use with digital data computers and apparatus for encoding and decoding digital data
Anderson, T. O.↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Closed form satellite tracking data corrections for an arbitrary tropospheric profile
Method for deriving atmospheric elevation error and range error correction formulas for effects of tropospheric refraction on satellite tracking data
Marini, J. W.↗
A differential correction technique for determining physical properties of the Martian atmosphere by use of solar occultation as seen from an artificial satellite
Martian atmospheric temperature and pressure and temperature gradient determination by least squares differential correction of satellite photometric solar eclipse data
Wallio, H. A.↗
Computer program for design of two-dimensional sharp-edged-throat supersonic nozzle with boundary layer correction
FORTRAN 4 computer program for design of sharp-edged-throat supersonic nozzles with boundary layer correction
Goldman, L. J.↗
Compression and error correction for TV
Data compression and error correcting codes applied to digital transmission of real time, standard format TV, along with voice and other data from Apollo spacecraft
Blizard, R. B.↗
Frequency interpolation correction for Alouette II ionograms
Alouette 2 ionograms frequency interpolation correction allowing measurement accuracy comparable to sounder system resolution
Benson, R. F.↗
A test set for integration of data compression/ error correction encoding techniques. I - System design and data compression considerations
Laboratory test set for integration of data compression and error correction encoding of digital communications system
Batson, B.↗
The refraction correction in light scattering
Refraction correction in photometer with cylindrical light scattering cell and detectors, describing experimental testing by mathematical and geometrical analysis
Billmeyer, F. W., Jr.↗
Corrections for small values of the logarithm terms in the electrical conductivity of a fully ionized plasma
Correction factors for small values of logarithm of Debye length ratio to mean impact parameter in electrical conductivity of fully ionized plasma
Viegas, J. R.↗
Status of life testing, stress testing, and failure analysis and corrective action
Service life/stress testing, failure analysis and corrective action from technical and cost positions
Bland, W. M., Jr.↗
Ionospheric refraction corrections in satellite tracking
Ionospheric refraction errors in satellite tracking, computing elevation, range and range rate corrections
Bent, R. B.↗
Self-correcting initial value formulations in nonlinear structural mechanics
Nonlinear static structural mechanical problems solution, using self correcting initial value formulations
Haisler, W. E.↗
Data compression/error correction digital test system. Appendix 3: Maintenance. Book 2: Receiver assembly drawings
The assembly drawings of the receiver unit are presented for the data compression/error correction digital test system. Equipment specifications are given for the various receiver parts, including the TV input buffer register, delta demodulator, TV sync generator, memory devices, and data storage devices.
Source record↗
Self-correcting incremental approach in nonlinear structural mechanics.
A self-correcting, incremental-solution procedure has been developed which seems to be promising in solving geometrically highly nonlinear problems. The procedure is also applicable to systems with many degrees of freedom where the bandwidth of the stiffness matrix is large compared with the narrow bandwidth for the shell of revolution.
Massett, D. A.↗
Thin wing corrections for phase-change heat-transfer data.
Since no methods are available for determining the magnitude of the errors incurred when the semiinfinite slab assumption is violated, a computer program was developed to calculate the heat-transfer coefficients to both sides of a finite, one-dimensional slab subject to the boundary conditions ascribed to the phase-change coating technique. The results have been correlated in the form of correction factors to the semiinfinite slab solutions in terms of parameters normally used with the technique.
Hunt, J. L.↗
Estimating trajectory correction requirements for the Outer Planets Grand Tour missions.
The estimation of trajectory correction requirements for the Outer Planets Grand Tour (OPGT) missions poses a unique and many-faceted problem for the systems analyst. In this paper the navigation concept for the OPGT is developed and illustrated. The limiting accuracies and performance of the combined radio/onboard optical system are examined. The combined orbit determination system is characterized by its accuracy and by its system risks. Such considerations are included with the statistical combination of maneuver estimates to produce preliminary delta V estimates for the planned OPGT missions.
Friedman, L. D.↗
Error correction in adders using systematic subcodes.
A generalized theory is presented for the construction of a systematic subcode for a given AN code in such a way that error control properties of the AN code are preserved in this new code. The 'systematic weight' and 'systematic distance' functions in this new code depend not only on its number representation system but also on its addition structure. Finally, to illustrate this theory, a simple error-correcting adder organization using a systematic subcode of 29 N code is sketched in some detail.
Rao, T. R. N.↗
A modification of the Avrett-Krook temperature-correction procedure.
In the course of developing a computer program for blanketed model stellar atmospheres, it was found that near the surface the Avrett-Krook temperature correction procedure (1963) has poor convergence properties. The problem is most apparent when frequencies shortward of the Lyman discontinuity are included. Slightly different assumptions have been made to improve the convergence.
Karp, A. H.↗