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Undergrad college students deploy purposes to geosynchronous satellite tv for pc 22,236 miles above Earth

October 5, 2025
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Undergrad college students deploy purposes to geosynchronous satellite tv for pc 22,236 miles above Earth
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An out of this world opportunity
Nischal Kharel and Dikchhya Kharel within the NSF Heart for House, Excessive-performance, and Resilient Computing. Credit score: Aimee Obidzinski, College of Pittsburgh

For a lot of faculty college students, satellites are faint dots crossing the sky on clear nights. These objects are background particulars from science fiction to actuality, like GPS, satellite tv for pc radio, and WiFi.

For College of Pittsburgh laptop engineering college students Dikchhya and Nischal Kharel, the compact objects hurtling by way of area and pelted by radiation are distinctive challenges.

By means of a partnership with the College of Pittsburgh’s NSF Heart for House, Excessive-Efficiency & Resilient Computing (SHREC) and Lockheed Martin, the 2 undergraduates had a novel alternative to develop and deploy purposes to a satellite tv for pc in geosynchronous orbit (GEO), 22,236 miles above Earth.

Discovering SHREC

Because the cousins have been nearing commencement from the Swanson Faculty of Engineering final spring, neither had concrete plans to attend graduate faculty. That modified after a dialog with Samuel Dickerson, affiliate professor {of electrical} and laptop engineering.

“When Professor Dickerson discovered that we each cherished area and needed to work at NASA, he requested if we knew about SHREC,” Nischal stated. “One way or the other, we did not.”

Dickerson amended that, introducing them to Alan George, Division Chair, R&H Mickle Endowed Chair, NSF SHREC House Heart Director, and professor {of electrical} and laptop engineering. George supplied Dikchhya and Nischal with the chance to earn credit conducting area analysis with Linus Silbernagel, a second-year Ph.D. scholar, and Evan Gretok, a SHREC postdoctoral researcher.

An out of this world opportunity
Linus Silbernagel, Dikchnya Kharel, and Nischal Kharel within the NSF Heart for House, Excessive-performance, and Resilient Computing. Credit score: Aimee Obidzinsk, College of Pittsburgh

Fixing real-world issues

On November 1, 2022, Lockheed Martin launched an In-space Improve Satellite tv for pc System (LM LINUSS) into GEO, which permits satellites to orbit on the identical charge as Earth’s rotation, making them seem stationary from the bottom. As we speak, because the mission nears completion, the CubeSat satellite tv for pc serves as a take a look at bench.

In GEO, greater than 20,000 miles farther out than satellites in low Earth orbit (LEO), LINUSS offers a possibility to check code and purposes in tougher circumstances.

“Lockheed Martin approached Dr. George about the potential for constructing and working checks in a GEO satellite tv for pc due to SHREC’s experience in satellite tv for pc {hardware} and software program,” stated Silbernagel. “We had some issues that Dikchhya and Nischal may assist resolve.”

The bounds of reminiscence

CubeSat satellites are extremely small—some fewer than 4 inches—and thus constrained of their computational energy, lowering operate effectivity. Tiny onboard cameras, for example, can seize wavelengths that the human eye cannot course of however that create huge recordsdata that waste time and power to transmit again to Earth.

“I labored on a undertaking referred to as CNN JPEG, which a graduate scholar had began and that makes use of machine studying to compress knowledge in satellite tv for pc pictures,” stated Nischal. “I needed to deploy the expertise on LINUSS.”

The LINUSS satellite tv for pc makes use of a ZCU102 computing board, and the staff replicated Lockheed Martin’s satellite tv for pc configuration on it.

“Lockheed Martin packages their apps in a sure means,” Nischal stated. “We received the expertise working on our take a look at board and despatched it to them to be transmitted to LINUSS.”

Sadly, though the app labored on Earth, it was too massive to run within the satellite tv for pc. “In lessons, we’re taught about reminiscence constraint, but it surely’s completely different if you truly run into it,” stated Nischal, who has been working to optimize CNN JPEG.

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Making it work in area

Satellites generate many pictures, however most are irrelevant. They depict stretches of ocean or forest, or simply clouds. “Satellites ship again many pictures of little curiosity to researchers, losing reminiscence and bandwidth, which creates delays,” stated Dikchhya.

To resolve this drawback, Dikchhya got down to run a machine-learning mannequin on LINUSS. The mannequin, educated by Gretok, permits autonomous onboard classification on a constrained system. The appliance reduces large pictures to tiles and categorizes them to assist eradicate redundant knowledge. “My job was to make it work in area,” Dikchhya stated.

She did simply that.

Utilizing the ZCU102 board, she programmed and packaged the appliance and despatched it to Lockheed Martin.

“Mine is a smaller mannequin, so it ran with out points,” stated Dikchhya. “After our last checks, the Lockheed Martin staff despatched it as much as LINUSS, ran the appliance, and the mannequin accurately categorised the photographs. Watching one thing we constructed function efficiently 22,000 miles above Earth was a serious milestone and an thrilling alternative.”

“It will be inconceivable for college kids to do one thing this large with out Lockheed Martin’s partnership,” stated Silbernagel. “Dikchhya and Nischal received to affix the staff remotely through the testing and deployment. It is the primary time Pitt undergraduate college students have run apps in GEO.”

“This undertaking represents a necessary facet of SHREC,” stated George. “By means of college and business partnerships like this one, college students get these unbelievable alternatives that propel them into area analysis and put together them for careers in area engineering.”

“After we began,” stated Nischal, who like Dikchhya is now a SHREC graduate scholar, “we have been undergraduate college students with nearly no real-world analysis expertise. We encountered issues that others hadn’t, and we had to determine tips on how to resolve them.”

Supplied by
College of Pittsburgh


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