Lunar Lander Horizontal Velocity Computation Using Vision based Sensor for Chandrayaan

Tanisha Bhatia; Amit Maji; Jayanta Laha; M.M Mehra; H S Ravindra; Subhalakshmi K

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Lunar Lander Horizontal Velocity Computation Using Vision based Sensor for Chandrayaan

机译：基于视觉的钱德拉雅人月球着陆器水平速度计算

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This paper presents a vision based sensor which is used to compute the horizontal velocity of the Lunar Lander forChandrayaan-2 project.The sensor computes displacement between two successive images using phase correlationimage registration algorithm.This displacement is combined with altitude information to provide velocity ofLander.Phase correlation image registration algorithm is worked in frequency domain and it is independent ofthe scene intensity.The complex algorithm of FFT and inverse FFT are implemented in hardware without anyprocessor to meet the sensor update rate.The complete processing of velocity computation is implemented in asingle RTAX2000S FPGA.Here,the results obtained in various tests are also present.

机译：本文提出了一种基于视觉的传感器，用于计算Chandrayaan-2项目的Lunar Lander的水平速度。该传感器使用相位相关图像配准算法计算两个连续图像之间的位移，该位移与高度信息结合以提供Lander的速度。相位相关图像配准算法在频域中工作，与场景强度无关。FFT和逆FFT的复杂算法是在没有任何处理器的硬件中实现的，以满足传感器的更新速率。在RTAX2000S中实现了速度计算的完整处理FPGA。在这里，还提供了在各种测试中获得的结果。

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来源
《Journal of Spacecraft Technology》 |2018年第1期|19-24|共6页
作者
Tanisha Bhatia; Amit Maji; Jayanta Laha; M.M Mehra; H S Ravindra; Subhalakshmi K;
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作者单位

Laboratory for Electro Optics SystemsIndian Space Research Organization;

Laboratory for Electro Optics SystemsIndian Space Research Organization;

Laboratory for Electro Optics SystemsIndian Space Research Organization;

Laboratory for Electro Optics SystemsIndian Space Research Organization;

Laboratory for Electro Optics SystemsIndian Space Research Organization;

Indian Space Research Organization Headquarters;

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原文格式 PDF
正文语种 eng
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关键词
Blur; FPGA; FFT; Gradient; Phase Correlation; Sobel;

机译：模糊;FPGA;FFT;梯度;相位相关;Sobel;

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1. Horizontal velocity estimation via downward looking descent images for lunar landing [J] . Yan Ruicheng, Cao Zhiguo, Wang Jianhu, Aerospace and Electronic Systems, IEEE Transactions on . 2014,第2期

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2. A predictive equation for the vertical-to-horizontal ratio of ground motion at rock sites based on shear-wave velocity profiles from Japan and Switzerland [J] . Edwards B., Poggi V., F?h D. Bulletin of the Seismological Society of America . 2011,第6期

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3. A computational method based on Gustafson-Kessel fuzzy clustering for a novel islanding detection for grid connected devices and sensors [J] . Ponmudi B., Balasubramanian G. Computational Intelligence . 2020,第4期

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4. Design of FPGA based horizontal velocity computation and image storage unit for lunar lander [C] . Tanisha Bhatia, Jayanta Laha, Amit Maji, 2017 4th IEEE Uttar Pradesh Section International Conference on Electrical, Computer and Electronics . 2017

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Lunar Lander Horizontal Velocity Computation Using Vision based Sensor for Chandrayaan

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