Bruce Elbert is a well-known author and expert in the field of satellite communications. He has written several books on the subject, including "Introduction to Satellite Communication," "The Satellite Communication Applications Handbook," and "Global Positioning System: Theory and Applications."

Elbert has over 50 years of experience in the satellite communications industry, having worked for major companies such as Hughes Aircraft Company, Lockheed Martin, and Intelsat. He has held several senior positions, including Vice President of Technology Development at Hughes, Vice President of Network Systems at Lockheed Martin, and Vice President of the Satellite Applications and Services Division at Intelsat.

Elbert is also a recognized expert in the field of global navigation satellite systems (GNSS), having contributed to the development of the GPS system while working at Hughes. He has written several papers and articles on GNSS and is considered one of the leading experts in the field.

In addition to his work in the satellite communications industry, Elbert is also an accomplished author and educator. He has written numerous articles and papers on satellite communications and is a sought-after speaker and lecturer on the subject. Elbert has also taught courses on satellite communications at universities and industry events around the world.

Overall, Bruce Elbert is a highly respected expert in the field of satellite communications and global navigation satellite systems. His extensive experience and knowledge have made him a valuable resource for companies, government agencies, and educational institutions around the world.