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Satellite Navigation

Volume 3, Number 2 (Summer 2002)

Charting a Course Toward Global Navigation

In the 1960s, the Global Positioning System emerged as a radical new way to provide precise navigation for U.S. armed forces across the globe. Early work at The Aerospace Corporation helped get the program off the ground.

Operation and Application of the Global Positioning System

GPS was originally designed for defense operations, but civilian receivers now far outnumber military receivers. The number of operational receivers has increased exponentially over the last decade as the technology has moved in diverse and unexpected directions.

Optimizing Performance Through Constellation Management

Deciding where to put the GPS satellites is no easy task. Research at Aerospace has been instrumental in answering the fundamental questions of constellation management: how many, how high, how close, and how long.

Orbit Determination and Satellite Navigation

The Global Positioning System is remarkably precise in determining a user's location. But before these satellites can help anyone else, they first need to know their own positions and movements. Orbit determination is the branch of space science that makes such knowledge possible.

GPS/Inertial Navigation for Precise Weapon Delivery

For centuries, military planners have sought to place a weapon exactly on an intended target. Such accuracy not only helps ensure destruction of the target, it helps prevent collateral damage. While systems have improved throughout the years, the advent of GPS has brought a major advancement in precision weapon delivery.

Antijamming and GPS for Critical Military Applications

The Department of Defense is working hard to enhance the jam resistance of its GPS-based systems. Recent research at Aerospace has yielded promising results.

Modernization and the Move to GPS III

The numerous critical applications and infrastructures that have come to rely on GPS will require changes that cannot be accommodated by the system as originally conceived. Aerospace has been instrumental in defining a new system architecture that will ensure that military, civilian, and commercial needs are met far into the future.

Satellite Navigation

Volume 3, Number 2 (Summer 2002)

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