This Interface Control Document (ICD) defines the requirements related to the interface between the Space Segment (SS) of the Global positionING System (GPS) and the Navigation User Segment (US) of the GPS.
标签： Interface Control Document gps
上传时间： 2016-01-20
上传用户：芃发发da
This book gives a comprehensive overview of the technologies for the advances of mobile radio access networks. The topics covered include linear transmitters, superconducting filters and cryogenic radio frequency (RF) front head, radio over fiber, software radio base stations, mobile terminal positionING, high speed downlink packet access (HSDPA), multiple antenna systems such as smart antennas and multiple input and multiple output (MIMO) systems, orthogonal frequency division multiplexing (OFDM) systems, IP-based radio access networks (RAN), autonomic networks, and ubiquitous networks.
标签： Advances Networks Access Mobile Radio in
上传时间： 2020-05-26
上传用户：shancjb
This introduction takes a visionary look at ideal cognitive radios (CRs) that inte- grate advanced software-defined radios (SDR) with CR techniques to arrive at radios that learn to help their user using computer vision, high-performance speech understanding, global positionING system (GPS) navigation, sophisticated adaptive networking, adaptive physical layer radio waveforms, and a wide range of machine learning processes.
标签： Technology Cognitive Radio
上传时间： 2020-05-26
上传用户：shancjb
Mobile radio communications are evolving from pure telephony systems to multimedia platforms offering a variety of services ranging from simple file transfers and audio and video streaming, to interactive applications and positionING tasks. Naturally, these services have different constraints concerning data rate, delay, and reliability (quality-of-service (QoS)). Hence, future mobile radio systems have to provide a large flexibility and scal- ability to match these heterogeneous requirements.
标签： Communications Wireless Channels MIMO over
上传时间： 2020-06-01
上传用户：shancjb
Software-defined radios (SDRs) have been around for more than a decade. The first complete Global positionING System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions. We therefore find it timely to publish an up-to-date text on the sub- ject and at the same time include Galileo, the forthcoming European satellite- based navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS).
标签： A_Software-Defined_GPS_and_Galile o_Receiver
上传时间： 2020-06-09
上传用户：shancjb
The purpose of this book is to present detailed fundamental information on a global positionING system (GPS) receiver. Although GPS receivers are popu- larly used in every-day life, their operation principles cannot be easily found in one book. Most other types of receivers process the input signals to obtain the necessary information easily, such as in amplitude modulation (AM) and frequency modulation (FM) radios. In a GPS receiver the signal is processed to obtain the required information, which in turn is used to calculate the user position. Therefore, at least two areas of discipline, receiver technology and navigation scheme, are employed in a GPS receiver. This book covers both areas.
标签： Fundamentals_of_Global_Positionin g_System_Receivers
上传时间： 2020-06-09
上传用户：shancjb
Many applications have required the positionING accuracy of a Global Navigation Satellite System (GNSS). Some applications exist in environments that attenuate GNSS signals, and, consequently, the received GNSS signals become very weak. ExamplesofsuchapplicationsarewirelessdevicepositionING,positionINGinsensor networks that detect natural disasters, and orbit determination of geostationary and high earth orbit (HEO) satellites. Conventional GNSS receivers are not designed to work with weak signals. This book presents novel GNSS receiver algorithms that are designed to work with very weak signals.
标签： Receivers Signals GNSS Weak for
上传时间： 2020-06-09
上传用户：shancjb
As you may have guessed from the title, this book is about GPS (the satellite-based Global positionING System) and maps; digital maps to be exact.
标签： GPS_for_Dummie
上传时间： 2020-06-09
上传用户：shancjb
Of the various applications that satellites have been used for, one of the most promising is that of global positionING. Made possible by Global Navigation Satellite Systems, global positionING enables any user to know his or her exact position on Earth. Nowadays, the only fully functioning system is the American Global positionING System (GPS). However, the European system, known as Galileo, is expected to be operative in 2012.
上传时间： 2020-06-09
上传用户：shancjb
STM32F驱动L6470 ■ Operating voltage: 8 - 45 V■ 7.0 A out peak current (3.0 A r.m.s.)■ Low RDS(on) Power MOSFETs■ Programmable speed profile and positionING■ Programmable power MOS slew rate■ Up to 1/128 microstepping■ Sensorless stall detection■ SPI interface■ Low quiescent and standby currents■ Programmable non-dissipative overcurrentprotection on high and low-side■ Two levels of overtemperature protection
标签： l6470
上传时间： 2022-07-25
上传用户：kingwide
