The Global Positioning System: Assessing National Policies

Pace, Scott; Frost, Gerald; Lachow, Irving; Frelinger, David R.; Fossum, Donna

doi:10.7249/mr614

Cited by 56 publications

(23 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Originally, GPS was a technically joint program, since the Air Force developed the system to meet the navigation and timing needs of multiple users in the DoD [32]. Today, GPS is organizationally joint as well, since the Department of Transportation (DoT) has begun levying civilian requirements on the system and playing a more active role in its management [32].…”

Section: Jointness In the Government Space Sectormentioning

confidence: 99%

The Cost of Jointness: Insights from Environmental Monitoring Systems in Low-Earth Orbit

Dwyer

2014

View full text Add to dashboard Cite

The term jointness refers to activities or operations that are executed collaboratively by more than one government agency or military department. While joint operations have become increasingly common and successful, the government continues to struggle with joint system acquisition: in fact, although a common motivation for joint acquisition is cost savings, recent studies suggest that joint programs experience larger cost growth than non-joint programs and that it may be more cost effective for agencies to acquire systems independently rather than jointly. This thesis explains why joint programs often experience large cost growth and how jointness itself may induce it.To understand the cost of jointness, this thesis proposes and demonstrates a new approach for studying large, complex acquisition programs whereby the evolution of a program's organizational and technical architectures is quantified and observed using a design structure matrix (DSM)-based tool. Using this approach, one is able to gain an in-depth understanding of the underlying mechanisms that drive a program's costs, as well as global perspective on cost growth throughout a program's lifecycle. The utility of this approach is demonstrated by applying it to study the cost impacts of jointness on three programs that developed environmental monitoring systems for low Earth orbit.

show abstract

Section: Jointness In the Government Space Sectormentioning

confidence: 99%

The Cost of Jointness: Insights from Environmental Monitoring Systems in Low-Earth Orbit

Dwyer

2014

View full text Add to dashboard Cite

show abstract

“…The committee "spent the next several years deciding what the specifics of a satellite navigation system should be -how many satellites, at what altitude, signal codes, and modulation techniques -and what they would cost" (Pace et al 1995).…”

Section: Modern Gpsmentioning

confidence: 99%

“…(Note, however, that these are not exhaustive lists and will not all necessarily be useful for the task at hand, they are simply a starting place.) 8 …”

Section: Gps In the Public Domain: A Cost-benefit Analysismentioning

confidence: 99%

Case: The Global Positioning System (GPS)

Cunha¹,

LoPiccalo²

2014

View full text Add to dashboard Cite

“…However, the possibilities of traveling in space inspired researchers (Ibid.). These researchers attempted varied approaches to determine positions on the Earth using orbiting satellites (Pace et al, 1995;Whitlock & McCaskill, 2009). Successes recorded led to the development of the Global Positioning System (GPS), which is eventually used in many new applications including outdoor positioning and navigation (Grewal et al, 2007;Hofmann-Wellenhof, Lichtenegger, & Collins, 2012).…”

Section: Outdoor Navigationmentioning

confidence: 99%

A State-of-the-Art Survey of Indoor Positioning and Navigation Systems and Technologies

Sakpere

Oshin

Mlitwa

2017

SACJ

148

129

View full text Add to dashboard Cite

The research and use of positioning and navigation technologies outdoors has seen a steady and exponential growth. Based on this success, there have been attempts to implement these technologies indoors, leading to numerous studies. Most of the algorithms, techniques and technologies used have been implemented outdoors. However, how they fare indoors is different altogether. Thus, several technologies have been proposed and implemented to improve positioning and navigation indoors. Among them are Infrared (IR), Ultrasound, Audible Sound, Magnetic, Optical and Vision, Radio Frequency (RF), Visible Light, Pedestrian Dead Reckoning (PDR)/Inertial Navigation System (INS) and Hybrid. The RF technologies include Bluetooth, Ultra-wideband (UWB), Wireless Sensor Network (WSN), Wireless Local Area Network (WLAN), Radio-Frequency Identification (RFID) and Near Field Communication (NFC). In addition, positioning techniques applied in indoor positioning systems include the signal properties and positioning algorithms. The prevalent signal properties are Angle of Arrival (AOA), Time of Arrival (TOA), Time Difference of Arrival (TDOA) and Received Signal Strength Indication (RSSI), while the positioning algorithms are Triangulation, Trilateration, Proximity and Scene Analysis/ Fingerprinting. This paper presents a state-of-the-art survey of indoor positioning and navigation systems and technologies, and their use in various scenarios. It analyses distinct positioning technology metrics such as accuracy, complexity, cost, privacy, scalability and usability. This paper has profound implications for future studies of positioning and navigation.

show abstract

The Global Positioning System: Assessing National Policies

Cited by 56 publications

References 1 publication

The Cost of Jointness: Insights from Environmental Monitoring Systems in Low-Earth Orbit

The Cost of Jointness: Insights from Environmental Monitoring Systems in Low-Earth Orbit

Case: The Global Positioning System (GPS)

A State-of-the-Art Survey of Indoor Positioning and Navigation Systems and Technologies

Contact Info

Product

Resources

About