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Common Mars rover landing techniques scientists are using



Mars rover
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The rovers Mars 2020 mission contains important new technologies to improve entry, descent as well as landing. There are some common Mars rovers landing techniques that are used by scientists. Terrain-Relative Navigation, Range Trigger, MEDLI2 as well as its EDL microphone and cameras are among the commonly used technologies.


Range Trigger

It is a significant improvement in landing accuracy. It is difficult to land on Mars and is more challenging to land a rover close to its main scientific goal. Former rovers have landed near selected study areas, but weeks and months can be used to get to the main target. The Mars 2020 mission team is developing a strategy to bring the Rover on the ground closer to its primary goal than ever before. Range Trigger reduces landing eclipse size by more than 50%. The smaller size of the ellipse allows the project team to land at the locations where a larger ellipse is high risk because it involves more surface hazards. This allows scientists to access high priority sites with environments that can withstand the life of previous microbes. Range trigger is all about timings. The basic to the new precision landing technique is to choose the right time to press the trigger.


Terrain-Relative Navigation

Terrain-relative navigation helps us to land safely on Mars, specifically when the land is filled with hazards such as large rocks and steep slopes. Terrain-relative navigation is essential for the exploration of Mars. There are some of the most interesting places to explore in difficult areas. These places contain rocks and special soils that can preserve the signs of bacterial life on Mars. Terrain navigation greatly improves the estimates of Rover’s position on the land. Improved accuracy has a lot to do with estimates.



MEDLI2 is a new generation of sensors for entry, descent, and landing (EDL). MEDLI2 gets the pressure and temperature measurements on the heat shield and at the back of the body amid EDL. MEDLI2 is based on a tool that has been transferred to NASA’s Mars Science Laboratory mission. MEDLI is the abbreviation of MSL Entry, Descent, and Landing Instrumentation. MEDLI2 can collect the data from the heat shield and also from the rest. This data will be helpful for the engineers to validate their designs for a future entry, descent, and landing systems. The atmospheric data from the MEDA and MEDLI2, the surface of the rover’s weather station, can help the scientists and the engineers to understand atmospheric winds and density. Studies are needed to reduce the risks for robots and future human missions to Mars.


EDL Microphones and Cameras

Mar 2020 contains a set of cameras that can help engineers understand what is happening during one of the most dangerous parts of the mission; EDL. The Mars 2020 rover relies heavily on the successful design of the Curiosity mission, but the Mars 2020 adds several cameras to the design of the rover. The range of cameras includes a rover up look and a rover down look camera, descent-stage down look camera and a parachute up look cameras. The EDL Mars 2020 system also includes a microphone for capturing sounds during the EDL, such as descent engines firing.