Automatic identification method and device for planetary seismograph azimuth angles based on planetary sundial

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United States of America Patent

PATENT NO 12203753
APP PUB NO 20240426606A1
SERIAL NO

18395891

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Abstract

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The present invention discloses an automatic identification method and device for planetary seismograph azimuth angles based on a planetary sundial, comprising: obtaining geographical coordinates of a sundial needle tip and a sundial needle tip shadow relative to a planetary surface; determining a theoretical second solar ray elevation angle and a ray azimuth angle; constructing an objective function according to a first solar ray elevation angle and a ray azimuth angle corresponding to a time for obtaining the sundial needle tip shadow; and taking a minimum objective function as a target for solving a planetary seismograph azimuth angle. The present invention determines the planetary seismograph azimuth angle only by optical photos of a planetary rover or a lander without active vibration devices on supporting legs of the lander, thereby reducing system complexity and reducing weight, volume and power consumption brought by additional devices on the supporting legs of the lander.

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Patent Owner(s)

Patent OwnerAddress
INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES100029 BEIJING CITY CHAOYANG DISTRICT BEITUCHENG WEST ROAD NO 19 BEIJING CITY BEIJING CITY 100029

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Shaoqing Beijing, CN 5 0
Wang, Juan Beijing, CN 163 559
You, Qingyu Beijing, CN 5 4
Zhang, Jinhai Beijing, CN 12 11
Zhang, Shengquan Beijing, CN 5 4

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