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Multifunctional Information Distribution System (MIDS) is the NATO name for the communication component of Link-16. MID is an advanced command, control, communications, computing and intelligence (C4I) system incorporating high-capacity, jam-resistant, digital communication links for exchange of near real-time tactical information, including both data and voice, among air, ground, and sea elements. MIDS is intended to support key theater functions such as surveillance, identification, air control, weapons engagement coordination and direction for all Services. The MIDS program includes two different families of receiver synthesizer line cards: * MIDS-LVT (Low volume terminal): LVT(1), LVT(2), or LVT(3). * MIDS-JTRS (Joint Tactical Radio System Terminals).〔U.S. Army Weapons Systems 2013-2014, Department of Army, Skyhorse Publishing, Inc., Dec 13, 2013〕 MIDS-JTRS is a Software Defined Radio (SDR) that is compliant with the JTRS Software Communication Architecture (SCA). MIDS JTRS maintains the Link-16, J-Voice, and TACAN functionality of the older MIDS-LVT standard, and adds link-16 enhanced throughput (ET), link-16 frequency remapping (FR), and programmable crypto.〔U.S. Army Weapons Systems 2013-2014, Department of Army, Skyhorse Publishing, Inc., Dec 13, 2013〕 The MIDS terminal is based on the TDMA (Time Division Multiple Access) data-link technology with 128 time slot per second; during each time slot, only one terminal is allowed to transmit while all the other terminals on the same network are set to receive. To improve the anti-jamming capability signals are spread over 51 frequencies in the 960-1215 MHz frequency band; transmission is inhibited around the two IFF band (1030 and 1090 MHz.)〔Multifunctional Information Distribution System (MIDS) Low Volume Terminal (LVT) Development and Integration Programs Towards LINK-16 Network Centric Allied/Coalition Operations, UNCLASSIFIED/UNLIMITED, page 11-8〕 The maximum output power of a MIDS terminal is 200 Watts which allows an operational range of 300 miles; range can be extended by relaying information between intermediate terminals.〔Multifunctional Information Distribution System (MIDS) Low Volume Terminal (LVT) Development and Integration Programs Towards LINK-16 Network Centric Allied/Coalition Operations, UNCLASSIFIED/UNLIMITED, page 11-8〕 ==MIDS Components== The MIDS terminal consists of two different Line Replacement Units (LRUs): the Main Terminal and the Remote Power supply (RPS). The Main Terminal consists of 10 Shop Replaceable Units (SRUs): * Chassis * Power Amplifier (PA) * Exciter/IPF (Interference Protection Feature) * Receiver Synthesizer (R/S, 2 per terminal), Either LVT(1), LVT(2), LVT(3), or JTRS Terminals * Signal Message Processor (SMP) * Tactical Air Navigation (TACAN) * Voice * Tailored Processor (TP)/Avionic MUX (1553B/3910) * Data Processor (DP)/Ground MUX (X.25/Ethernet) * Receiver-Transmitter Interface (RTI/Discrete) In addition there are a few accessories required by some specific platforms: * High Power Amplifier Interface Assembly (HIA) * Direct Current Adapter (DCA) * Alternate Current Adapter (ACA) The MIDS terminal is based on the TDMA (Time Division Multiple Access) data-link technology with 128 time slot per second; during each time slot, only one terminal is allowed to transmit while all the other terminals on the same network are set to receive. To improve the anti-jamming capability signals are spread over 51 frequencies in the 960-1215 MHz frequency band; transmission is inhibited around the two IFF band (1030 and 1090 MHz.). The maximum output power of the terminal is 200 Watts which allows an operational range of 300 miles; range can be extended using the relay feature. The MIDS terminal is equipped with four different interfaces to communicate with the host platform: * MIL-STD-1553B * STANAG 3910 * Ethernet * X.25 Data rate can vary between 108 and 238 kbit/s, depending on the interface used. Secure voice messages are available with two different rates: 16 kbit/s and 2.4 kbit/s. The MIDS SW consists of two main configuration items: * Core SW (basically a modified JTIDS SW), which handles the LINK-16 messages; * Tailored Input/Output (I/O) SW, which handles communications with the host platform. MIDS Terminals exchange communication data with an on board computer platform known as the Host which will format, filter, and/or condition communication data for presentation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Multifunctional Information Distribution System」の詳細全文を読む スポンサード リンク
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