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Kavach incorporates several key characteristics of the European Train Control System (ETCS) as well as the Indian Anti-Collision Device (ACD); however, it is considerably more cost-effective in comparison to ETCS. [7] Furthermore, unlike ETCS, Kavach is not intended to function as a replacement to traditional Lineside signals. While ETCS ...
COMSEC (communications security), ITSEC (information technology security) and physical security are also a major part of the work in the modern environment. The advent of multimedia devices and remote control technologies allow huge scope for removal of massive amounts of data in very secure environments by the staff employed within, with or ...
ANT was designed for low-bit-rate and low-power sensor networks, in a manner conceptually similar to (but not compatible with) Bluetooth Low Energy. [3] This is in contrast with normal Bluetooth, which was designed for relatively high-bit-rate applications such as streaming sound for low-power headsets.
Several online retailers and drone technology companies are marketing the sale of radio frequency jammers as drone deterrence or privacy tools, sidestepping federal laws that prohibit such devices ...
Modern secure communication techniques use such methods as spread spectrum modulation to resist the deleterious effects of jamming. Jamming of foreign radio broadcast stations has often been used in wartime (and during periods of tense international relations) to prevent or deter citizens from listening to broadcasts from enemy countries ...
An anti-radiation missile (ARM) is a missile designed to detect and home in on an enemy radio emission source. [1] Typically, these are designed for use against an enemy radar , although jammers [ 2 ] and even radios used for communications can also be targeted in this manner.
As of December 2011, unrestricted voice communications are allowed in the 869.7-870.0 MHz band with channel spacing of 25 kHz or less and maximum power output of 5 mW ERP. [ 6 ] [ 7 ] [ 8 ] SRD860 handheld transceivers were briefly available in mid 2000s, however they did not offer dual-band compatibility with PMR446 and LPD433 bands.
A duplex communication system is a system composed of two connected parties or devices which can communicate with one another in both directions. The term duplex is used when describing communication between two parties or devices. Duplex systems are employed in nearly all communications networks, either to allow for a communication "two-way ...