There is growing interest in designing a future lunar navigation satellite system (LNSS) while
utilizing a SmallSat platform. However, many design decisions, eg, regarding the satellite …

Due to the unencrypted structure of civil GPS signals, the timing information supplied to the
PMUs in the power grid is vulnerable to spoofing attacks. We propose our GPS time …

After more than fifty years since the Apollo program, we are encountering a revived, second
Space Race with international space agencies seeking to not only return humans to the …

Finding sets of binary sequences with low auto- and cross-correlation properties is a hard
combinatorial optimization problem with numerous applications, including multiple-input-…

Many vehicle platforms typically use sensors such as LiDAR or camera for locally-referenced
navigation with GPS for globally-referenced navigation. However, due to the unencrypted …

There has been a growing interest in using small satellites (SmallSats) for a future lunar
navigation and communication satellite system (LNCSS). We conceptualize the design of a …

To protect civilian global positioning system (GPS) users from spoofing attacks, the US Air
Force Research Lab has proposed the chips-message robust authentication (Chimera) …

With the birth of the next-generation GPS III constellation and the upcoming launch of the
Navigation Technology Satellite-3 (NTS-3) testing platform to explore future technologies for …

To protect civilian GPS users from spoofing, the Air Force Research Lab (AFRL) has developed
the Chips-Message Robust Authentication (Chimera) signal enhancement for the GPS …

For the future lunar navigation satellite system (LNSS), a GPS-like constellation for the Moon,
NASA has expressed interest in using a smallsat platform. However, many design …