Wireless means different things to different people. For this book, it refers
to the radio systems that provide Point-to-Point, point-to-multipoint, and
Earth-space communications over transmission links that propagate outside
buildings through the lower atmosphere. Wireless systems are being built
that provide data transmission between computers and other devices on
one’s own desk. These are part of the wireless world but not the part where,
except for interference perhaps, the atmosphere has any influence. The intent
of this book is to provide a description of the physical phenomena that can
affect propagation through the atmosphere, present sample measurements
and statistics, and provide models that system designers can use to calculate
their link budgets and estimate the limitations the atmosphere may place on
their design.
The book is written for those concerned with the design and performance of satellite
communications systems employed in fixed Point-to-Point, broadcasting, mobile, radio-
navigation,data-relay,computercommunications,andrelatedsatellite-basedapplications.The
recentrapidgrowthinsatellitecommunicationshascreatedaneedforaccurateinformationon
both satellite communications systems engineering and the impact of atmospheric effects on
satellite link design and system performance. This book addresses that need for the first time
in a single comprehensive source.
Telecommunications is today widely understood to mean the electrical means of
communicating over a distance. The first form of telecommunications was that of
the Telegraph, which was invented quite independently in 1837 by two scientists,
Wheatstone and Morse. Telegraphy was on a Point-to-Point unidirectional basis and
relied on trained operators to interpret between the spoken or written word and the
special signals sent over the telegraph wire. However, the use of telegraphy did
greatly enhance the operations of railways and, of course, the dissemination of news
and personal messages between towns.
GPR matlab The function should work with MATLAB v 5 and above. Please do not hesitate to contact me with any ideas for improving it or to point out any bugs that you find.
This a naive implementation of BOOTP/TFTPBOOT, the protocols
to use to bootstrap a computer through a TCP/IP network.
The goal was to design a small footprint implementation
to allow the code to be integrated into a monitor program
stored in a ROM/FLASH, the footprint is about 7 KBytes
for the test program.
This code has not been yet tested in many environment.
It should be seen at your starting point to integrate
the network boot function to your board.
Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs temperature to a PC from the DS28EA00 temperaturesensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.
Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs temperature to a PC from the DS28EA00 temperaturesensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.
數(shù)值計(jì)算牛頓迭代法的matlab源程序
說明如下：
％fun----input,the part as the form of f(x) in the equation f(x)=0
％ ini----input,sets the starting point to ini
％ err----input,sets admissible error
％ sol----output,returns the root of equation
