“…As shown in Figure 1, radio navigation accuracy with respect to Earth decreases as the distance between the probe and Earth increases. Unlike radio navigation, the closer the probe approaches the target, the more precise navigation performance OpNav can provide (Klumpp et al, 1980). Figure 1.Error Conics for Radio and Optical Navigation.…”
Section: A Concept Of Interplanetary Navigation and Analytical Methodmentioning
confidence: 99%
“…This is because OpNav is superior in its accuracy with respect to the target and radio navigation can achieve better accuracy with respect to the Earth (Klumpp et al, 1980). However, this method combines information with lower efficiency (Antreasian et al, 2008).…”
mentioning
confidence: 93%
“…navigation, the closer the probe approaches the target, the more precise navigation performance OpNav can provide (Klumpp et al, 1980).…”
Section: A Concept Of Interplanetary Navigation and Analytical Methodmentioning
confidence: 99%
“…In previous missions, the navigation results have been provided by direct combination without information fusion, using OpNav results for those with respect to the target and radio navigation ones for those with respect to Earth. This is because OpNav is superior in its accuracy with respect to the target and radio navigation can achieve better accuracy with respect to the Earth (Klumpp et al, 1980). However, this method combines information with lower efficiency (Antreasian et al, 2008).…”
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.
“…As shown in Figure 1, radio navigation accuracy with respect to Earth decreases as the distance between the probe and Earth increases. Unlike radio navigation, the closer the probe approaches the target, the more precise navigation performance OpNav can provide (Klumpp et al, 1980). Figure 1.Error Conics for Radio and Optical Navigation.…”
Section: A Concept Of Interplanetary Navigation and Analytical Methodmentioning
confidence: 99%
“…This is because OpNav is superior in its accuracy with respect to the target and radio navigation can achieve better accuracy with respect to the Earth (Klumpp et al, 1980). However, this method combines information with lower efficiency (Antreasian et al, 2008).…”
mentioning
confidence: 93%
“…navigation, the closer the probe approaches the target, the more precise navigation performance OpNav can provide (Klumpp et al, 1980).…”
Section: A Concept Of Interplanetary Navigation and Analytical Methodmentioning
confidence: 99%
“…In previous missions, the navigation results have been provided by direct combination without information fusion, using OpNav results for those with respect to the target and radio navigation ones for those with respect to Earth. This is because OpNav is superior in its accuracy with respect to the target and radio navigation can achieve better accuracy with respect to the Earth (Klumpp et al, 1980). However, this method combines information with lower efficiency (Antreasian et al, 2008).…”
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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