Neil Gilbert Siegel (born February 19, 1954) is an Americancomputer scientist,systems engineer, and engineer, known for his development of many key systems for the United States military, including theBlue-Force Tracking system, the U.S. Army's first unmanned air vehicle system, and the US Army forward-area air defense system.^[1] Several of his inventions also found their way into consumer products, such as hand-held devices (e.g., mobile GPS devices, smartphones, etc.) whose map displays automatically orient themselves to align with the real-world's cardinal points. He also participated in the development of techniques that are now widely-used in healthcare.^[2]

Neil Siegel
Born	Neil Gilbert Siegel (1954-02-19)February 19, 1954 (age 71) Brooklyn, New York, U.S.
Alma mater	University of Southern California
Known for	Blue-Force Tracking FBCB2 Hunter UAV multicast communications protocols low-data-rate networking protocols Tactical Operations Centers Command and Control Centers
Spouse	Robyn Friend
Mother	Judith Love Cohen
Relatives	Jack Black (half-brother)
Awards	US National Medal of Technology and Innovation (2023) US National Academy of Engineering (2005) IEEE Simon Ramo Medal (2011) IEEE Fellow (2011) US National Academy of Inventors (2019)
Scientific career
Fields	Engineering,systems engineering,computer science
Institutions	TRW Northrop Grumman University of Southern California
Doctoral advisor	Barry Boehm
Website	neilsiegel.usc.edu

Siegel was born inBrooklyn, New York, to engineers Bernard Siegel andJudith Love Cohen, and has lived most of his life in the area southwest of Los Angeles.^[3] He has two full siblings, Howard and Rachel, and is an older half-brother of actorJack Black.^[4] He attended theUniversity of Southern California, earning degrees in mathematics. During and after this time, he worked as a professional musician, mostly performing on the flute, and also playing folk and art music from the Balkans and the Middle East. Later, he earned a Ph.D. in systems engineering (also from USC), where his Ph.D. advisor was noted computer scientistBarry Boehm.

In 1976, he began work at what was thenTRW (acquired byNorthrop Grumman in 2002).

Starting in 1993, he led an organization at TRW that developed one-of-a-kind automation systems for the US military and (to a lesser extent) commercial companies. This organization achieved significant business success, growing rapidly every year during his tenure as leader (which continued until 2001). They created many new products whose general theme was automation support to decision-makers who operate in complex and stressful environments. In addition to theUS Army and theUS Air Force, customers during this time included the US steel industry and the movie industry.^[1]

In 1993, his team fielded the US Army's first fully automated command-and-control system, the Forward-Area Air Defense C2 System. This system is still in use today.

In 1995, his team won the contract to develop the US Army's first "digital battlefield" system, called Force-XXI Battle Command Brigade and Below (generally known by the acronymFBCB2). This has resulted in a highly regarded capability for the US, now used by theMarine Corps, as well as the Army.

Also in 1995, his team delivered the US Army's firstautomated command post, which has been followed by a long series of related capabilities to the present time.

In 1997, he was given responsibility for "fixing" theHunter UAV program, the US Army's first unmanned air vehicle. The program had suffered a series of crashes during testing, and was nominally "cancelled". During his tenure, the program became one of the US' most reliable unmanned air vehicles. The Hunter entered operational service in 1999 in the Balkans. Unmanned air vehicles were unreliable novelties in 1997, but by the time he retired in 2015, unmanned air vehicles were in widespread use in both military and civilian settings.

His personal science and engineering contributions included many of the most-important techniques for transitioning the internet from wired to wireless operation. These include techniques for adapting the internet to operate over the slower and less reliable communications links entailed in wireless operation, such as a patent for performing routing in a constantly-changing network (ultra-low bandwidth intra-network routing^[5]) and achieving acceptable dynamics through what he calls "force-structure-aware" networks.^[6] He and his team also hold the first patent for having the display screen on a mobile device turn as the device is rotated, and they also hold the first patent for remote security administration of mobile devices that have been lost or stolen.

He has been a pioneer in large-scale deployments of GPS-enabled applications^[7][8] (like theBlue-Force Tracking system). He has also been active in the field of structuring large-scale software developments so as to match the skill distribution encountered in real-world teams.

Since mid-2001, he has been the chief technology officer of TRW's Systems (nowNorthrop Grumman Mission Systems, and later,Northrop Grumman Information Systems). Prior to his tenure as VP / CTO, he served as VP / general manager of the Tactical Systems Division.

His work during this time has extended his earlier work in military networks, force-structure-aware networks, and large-scale system engineering methodologies. He retired at the end of 2015. He served as a VP and officer of the company for nearly 18 years.

As of 2016, Siegel became the IBM Professor of Engineering Management atUSC.^[9] In 2021, he also became a Professor of Computer Science Practice, and in 2024, he also became a Professor of Engineering Practice with Distinction. He is also an adjunct professor of engineering atUCLA.^[10]

Siegel has received a number of awards and honors, including:

• TheU.S. National Medal of Technology and Innovation in 2023.^[11]
• Election to theUS National Academy of Engineering in 2005.^[12]
• Selection as anIEEE Fellow (2011).^[13]
• TheIEEE Simon Ramo Medal (2011), for systems engineering and systems science.^[14]
• Member (2017) and Fellow (2019),National Academy of Inventors.^[15]
• US Army Honorable Order of Saint Barbara, 1996.^[15]
• iCMG award for system architecture (2011)^[16]
• Northern Virginia Technology Council—CTO of the year award (2011)^[17]
• National Medal of Technology and Innovation (2023)^[18]

Siegel has had a major impact on the design and capabilities of many types of mobile consumer electronics, including smart phones, GPS receivers, and so forth. He is the documented earliest creator of a complete, operating adaptation of the internet to fully-routed wireless operation, and many important / related technologies that are widely used today in such wireless devices, including:

• GPS-enabled mobile devices
• Automatic orientation of a map display to match the geographic cardinal points^[19]
• Optimizing unicast protocols (including TCP) for use on low-bandwidth, wireless networks^[20]
• Performing many security administrative and control tasks remotely^[21]
• Managing and administering a large network of wireless devices^[22]
• Increasing battery life on GPS-enabled devices^[23]

Siegel is an experienced musician who plays theflute,târ,^[24]ney,^[25] andkaval^[26] who has more than 1,500 concerts to his credit worldwide.^[26] He studied music with Iranian Sufi masterMorteza Varzi for more than 20 years. He is a long-time member of Professional Musicians Local 47, American Federation of Musicians, AFL-CIO.^[26]

He is married to Robyn Friend, a dancer, painter, writer, and singer, with whom he has performed all over the world during the last 30 years.^[27]

He is on the board of several non-profit organizations, including the Providence Trinity Health Care Hospice Foundation, the Electric Infrastructure Security Council, and The Institute of Persian Performing Arts. Since 2013, he and his wife, Robyn, have operated their own charitable organization, The Siegel and Friend Foundation.^[28]