The determination of the interplanetary orbits of Vikings 1 and 2

Rourke, K. H.; Breckenridge, W. G.; Campbell, James; Christensen, C. S.; Donegan, A. J.; Jerath, N.; Mottinger, N. A.; Rinker, George C.; Winn, F. B.

doi:10.2514/6.1977-71

Cited by 11 publications

(3 citation statements)

References 2 publications

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“…Table 2 gives an explicit result to demonstrate the impact of ephemeris error on the planned Mars image, and Figure 9 shows directly the ephemeris impact on the planned Mars Image. As is shown in equation (20) and Table 2, the residual of the planned image and actual image is proportional to the target ephemeris error. In addition, the residual of the planned image and actual image is also impacted by the distance to the target planet.…”

Section: Error Propagation Modelmentioning

confidence: 97%

“…In addition, the residual of the planned image and actual image is also impacted by the distance to the target planet. The closer the probe approaches the target planet, the larger the residual is, which can be explained by equation (20) that the residual is inverse proportional to the coordinates z c . Impact on navigation accuracy Impact on inertial coordinate system transformation.…”

Section: Error Propagation Modelmentioning

confidence: 98%

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Autonomous celestial navigation for a deep space probe approaching a target planet based on ephemeris correction

Fang

Ning

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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This article aims to propose an autonomous navigation method to simultaneously obtain precise position and velocity estimation of a deep space probe both with respect to Earth and with respect to the target, and estimate and correct the ephemeris uncertainty of the target that has a great influence on the navigation accuracy with respect to Earth. In this article, based on the analysis of the influences of ephemeris error on the state model, optical measurement, and the navigation accuracy, the ephemeris error is modeled. By taking the differences between the planned image and the actual image of the target as the ephemeris uncertainty measurement, the method is carried out by augmenting ephemeris uncertainty as system states, and is able to estimate and correct the ephemeris uncertainty of the target planet, and the position and velocity of the probe with respect to Earth and with respect to the target planet autonomously. The results show the influence of ephemeris error is removed from the orbital dynamics of the navigation system, and the proposed method can improve the accuracy with respect to Earth. The results demonstrate the proposed method autonomously yields superior performance with respect to Earth and with respect to the target.

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Section: Error Propagation Modelmentioning

confidence: 97%

Section: Error Propagation Modelmentioning

confidence: 98%

Autonomous celestial navigation for a deep space probe approaching a target planet based on ephemeris correction

Fang

Ning

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…A global fit on the ground can give accurate ephemeris results, which has been utilised for ephemeris correction in several interplanetary missions (Rourke et al, 1977;Riedel et al, 1990;Murrow and Jacobson, 1988). However it requires intensive computational time and large memory to store a complicated model, and is usually used in post-flight analysis to improve the ephemeris.…”

mentioning

confidence: 99%

A Radio/Optical Integrated Navigation Method Based on Ephemeris Correction for an Interplanetary Probe to approach a Target Planet

Fang

Ning

et al. 2015

J. Navigation

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To obtain accurate navigation results with respect to Earth simultaneously with those with respect to the target for an interplanetary probe to approach the target planet, this paper proposes a Radio/Optical integrated navigation method based on ephemeris correction, which deeply affects the fusion accuracy. In this paper, the model of the ephemeris error is established, and taking the analytical solution of the ephemeris uncertainty as measurement, the target ephemeris error and its covariance are estimated by Kalman filter and fed back to modify the force models. By correcting the target ephemeris and using information fusion, the Radio/Optical integrated navigation prevents the ephemeris uncertainty polluting the fusion accuracy, and efficiently combines the radio and optical navigation results. The results show the influence of the ephemeris error can be removed, and the Radio/Optical integrated navigation is capable of providing accurate navigation results with respect to Earth and the target. The results demonstrate the proposed method yields an accuracy superior to the conventional method, which proves its effectiveness.2. Optical navigation. 3. Radio navigation. 4. Ephemeris error estimation.

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An Overview of Viking Navigation

O'Neil

1978

Navigation

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The determination of the interplanetary orbits of Vikings 1 and 2

Cited by 11 publications

References 2 publications

Autonomous celestial navigation for a deep space probe approaching a target planet based on ephemeris correction

Autonomous celestial navigation for a deep space probe approaching a target planet based on ephemeris correction

A Radio/Optical Integrated Navigation Method Based on Ephemeris Correction for an Interplanetary Probe to approach a Target Planet

An Overview of Viking Navigation

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