1、NOT MEASUREMENT SENSITIVE MIL-STD-188-110C w/CHANGE 1 3 JANUARY 2012 SUPERSEDING MIL-STD-188-110C 23 SEPTEMBER 2011 DEPARTMENT OF DEFENSE INTERFACE STANDARD INTEROPERABILITY AND PERFORMANCE STANDARDS FOR DATA MODEMS AMSC N/A AREA TCSS DISTRIBUTION STATEMENT A: Approved for public release; distributi
2、on unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 ii FOREWORD 1. This Military Standard is approved and mandatory for use by all Departments and Agencies of the Department of Defense (DoD) in accordance with Joi
3、nt Technical Architecture (JTA) Version 6, dated 3 October 2003. 2. This document contains technical standards and design objectives for minimum interface and performance standards pertinent to voice frequency band modulators-demodulators (modems) which operate in both long-haul and tactical communi
4、cations systems. The terms “system standard“ and “design objective (DO)“ are defined in FED-STD-1037. In this document, the word “shall“ identifies mandatory system standards. The word “should” identifies DOs that are desirable but not mandatory. 3. Comments, suggestions, or questions on this docume
5、nt should be addressed to Oklahoma City Air Logistics Center (OC-ALC)/ENSDAA, 3001 Staff Drive, Tinker AFB, OK 73145 or e-mailed to af71tinker.af.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assi
6、st.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 iii SUMMARY OF CHANGE 1 MODIFICATIONS 1. Paragraph D.5.4. Removed sentence “The reinserted preamble facilitates acquisition (or re-acquisition) of an ongoing
7、 broadcast transmission.“ That refers to a feature that is obsolete. 2. Changed title of TABLE D-LII from “Data performance requirements, All Bandwidths” to “Data performance requirements, 3, 6, 9, 12, and 24 kHz Bandwidths“ for clarification purposes. Provided by IHSNot for ResaleNo reproduction or
8、 networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 iv 3. TABLE OF CONTENTS TITLE PAGE 1 SCOPE . 1 1.1 Scope. 1 1.2 Applicability. . 1 1.3 Application guidance. . 1 2 APPLICABLE DOCUMENTS . 2 2.1 Government documents. . 2 2.1.1 Specifications and standards. 2 2.1.2 Other G
9、overnment documents and publications. 3 2.2 Non-government publications. . 3 2.3 Order of precedence. . 3 3 DEFINITIONS 4 3.1 Terms. 4 3.2 Abbreviations and acronyms. . 5 4 GENERAL REQUIREMENTS . 10 4.1 Functional employment. . 10 4.2 Common parameters. 10 4.2.1 Modulation and data signaling rates a
10、nd tolerance. . 10 4.2.2 Logic and signaling sense for binary signals. 11 4.2.3 Digital interface characteristics. 12 4.2.4 Terminal impedance for quasi-analog signals. 12 4.2.4.1 Modems used in single-channel radio subsystems. . 12 4.2.4.2 Quasi-analog signal levels. . 13 4.2.5 Clock equipment, con
11、trol, and timing. . 13 4.2.5.1 Transmission modes. 13 4.2.5.2 Clock characteristics. 13 4.2.5.2.1 Modulation rates. 13 4.2.5.2.2 Modulation rate stability. . 13 4.2.5.2.3 Modulation rate phase adjustment. 13 4.2.5.2.4 Output signal. . 14 4.2.5.2.5 Clock period. 14 4.2.5.3 Clock/data phase relationsh
12、ip. 14 4.3 General design requirements. . 15 4.3.1 Federal maritime interoperability requirements. . 15 4.3.2 International interoperability requirements. . 15 4.3.2.1 Shore-to-ship broadcast systems. . 15 4.3.2.2 Maritime air communications systems. . 15 4.3.2.3 Radio teletypewriter systems. . 15 4
13、.4 Data link protocol (optional). . 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 v 5 DETAILED REQUIREMENTS 16 5.1 Frequency shift keying (FSK) modems for single-channel radio equipment. . 16 5.1.1 Narrow-shift FSK mo
14、dem. . 16 5.1.2 Wide-shift FSK modem. . 16 5.2 FSK data modems for voice frequency (VF) channel operation (withdrawn). . 16 5.3 HF data modems. 16 5.3.1 General requirements. . 16 5.3.1.1 Capability. . 17 5.3.1.2 Voice digitization. . 17 5.3.1.3 Optional modes. 17 5.3.1.4 Interface requirements. . 1
15、8 5.3.1.4.1 Line-side data characteristics. 18 5.3.1.4.2 LAN interface (DO). 18 5.3.1.4.3 Equipment side characteristics (informative). 18 5.3.1.4.4 Transmit override. 18 5.3.1.4.5 Buffering in synchronous serial mode. . 18 5.3.1.5 Remote control interface. . 18 5.3.1.5.1 Electrical interface. . 18
16、5.3.1.5.2 Optional modem control driver. 18 5.3.2 Serial (single-tone) mode. . 18 5.3.2.1 General. . 18 5.3.2.2 Sequencing of time phases. 19 5.3.2.2.1 Synchronization (sync) preamble phase. 21 5.3.2.2.2 Data phase. 24 5.3.2.2.3 EOM phase. 25 5.3.2.2.4 FEC coder and interleaver flush phase. . 25 5.3
17、.2.3 Functional descriptions. 25 5.3.2.3.1 EOM sequence. 25 5.3.2.3.2 Interleaver flush 25 5.3.2.3.3 FEC encoder. 25 5.3.2.3.4 Interleave load. . 28 5.3.2.3.5 Interleave fetch. 29 5.3.2.3.6 Modified-Gray decoder. . 30 5.3.2.3.7 Symbol formation. 31 5.3.2.3.8 Scrambler. . 36 5.3.2.3.9 PSK modulation.
18、 37 5.3.2.4 Waveform summary. 38 5.3.2.5 Performance requirements. . 38 5.3.3 Frequency hopping mode (optional). . 39 5.3.4 Robust serial tone mode for severely degraded HF links (optional). . 39 6 NOTES 39 6.1 Intended use. . 39 6.2 Issue of Department of Defense Index of Specifications and Standar
19、ds (DODISS). . 40 6.3 Subject term (key word) listing. . 40 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 vi LIST OF FIGURES FIGURE 1. STANDARD INTERFACE BETWEEN DATA TERMINAL EQUIPMENT AND DATA CIRCUIT-TERMINATING EQUIP
20、MENT. . 12 FIGURE 2. SERIAL (SINGLE-TONE) WAVEFORM FUNCTIONAL BLOCK DIAGRAM . 20 FIGURE 3 AN EXAMPLE OF EQUIPMENT INTERFACE BLOCK DIAGRAM. 22 FIGURE 4 FEC ENCODER BLOCK DIAGRAM . 27 FIGURE 5. STATE CONSTELLATION DIAGRAM 35 FIGURE 6. RANDOMIZING SHIFT REGISTER FUNCTIONAL DIAGRAM . 37 LIST OF TABLES T
21、ABLE I. REFERENCE LIST FOR MODEM APPLICATIONS. 10 TABLE II. LOGIC AND SIGNAL SENSE FOR BINARY SIGNALS. 11 TABLE III. CHARACTERISTIC FREQUENCIES OF FSK DATA MODEMS FOR SINGLE-CHANNEL RADIO EQUIPMENT. 16 TABLE IV. ERROR CORRECTING CODING, FREQUENCY HOPPING OPERATION. 26 TABLE V. ERROR-CORRECTING CODIN
22、G, FIXED FREQUENCY OPERATION. . 28 TABLE VI. INTERLEAVER MATRIX DIMENSIONS. . 29 TABLE VII. BITS-PER-CHANNEL SYMBOL. . 30 TABLE VIII. MODIFIED-GRAY DECODING AT 2400 BPS AND 4800 BPS. . 31 TABLE IX. MODIFIED-GRAY DECODING AT 75 BPS (FIXED FREQUENCY) AND 1200 BPS. . 31 TABLE X. CHANNEL SYMBOL MAPPING
23、FOR 75 BPS. 33 TABLE XI. ASSIGNMENT OF DESIGNATION SYMBOLS D1 AND D2. 34 TABLE XII. CONVERSION OF TWO BIT COUNT VALUE TO THREE BIT SYMBOL. . 34 TABLE XIII. CHANNEL SYMBOL MAPPING FOR SYNC PREAMBLE. 36 TABLE XIV. FREQUENCY-HOPPING OPERATION WAVEFORM CHARACTERISTICS. . 38 TABLE XV. FIXED-FREQUENCY OPE
24、RATION WAVEFORM CHARACTERISTICS. 38 TABLE XVI. SERIAL (SINGLE-TONE) MODE MINIMUM PERFORMANCE. . 39 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 1 1. SCOPE 1.1 Scope. This document establishes mandatory technical standar
25、ds and design objectives (DO) that are necessary to ensure interoperability and to promote performance among data modulators-demodulators (modems) used in the voice frequency (VF) band of long-haul and tactical communications systems. This document also provides guidance to the designers of new data
26、 modems that incorporate characteristics not yet standardized by specifying the technical characteristics of data modems currently in the inventory. The purpose of this guidance is to ensure attainment of minimum acceptable performance and maximum interoperability between existing and future data mo
27、dems with specified transmission channel conditions. 1.2 Applicability. These standards are mandatory within the Department of Defense (DoD) in the design, development and engineering of new communications facilities for both narrowband and wideband long-haul and tactical systems. In some cases, ref
28、erence is made to other documents that provide standards for specific applications. It is not intended that existing systems be immediately converted to comply with the requirements of these standards. New systems, and those undergoing major modification or rehabilitation, conformance to these stand
29、ards is subject to current procurement regulations. This document is applicable to the design and development of new data modems with standard data signaling rates up to and including 120,000 bits per second (bps) used in long-haul and tactical communications systems. This document is not applicable
30、 to high frequency (HF) data modems used in the Tactical Digital Information Link (TADIL) A. The HF data modem standards for TADIL A are published in MIL-STD-188-203-1. 1.3 Application guidance. Requirements in this document, if applied as intended, ensure the interoperability and performance of dat
31、a modems having the same or similar functions. The variety of data modems is limited to that which are essential to effectively support the missions of the military forces. It is not intended that the standards contained in this document inhibit advances in communications technology. Such advances a
32、re encouraged by including DOs that should be used if economically feasible. Additionally, standardizing parameter values but not the technology that may be used to meet these parameter values facilitates such advances. Minimum performance requirements for the high frequency (HF) serial (single-tone
33、) modem waveforms are specified in Table XVI and Appendices B, C, D, and F. The specified values shown represent HF modem performance under ideal test conditions. To identify the minimum acceptable performance available to users, many factors, including operational test and evaluation must be consid
34、ered. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documen
35、ts cited in other sections of this standard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of thi
36、s standard, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards, and handbooks. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed
37、in the solicitation or contract. INTERNATIONAL STANDARDIZATION AGREEMENTS STANAG 4197 Modulation and Coding Characteristics That Must Be Common to Assure Interoperability of 2400 BPS Linear Predictive Encoded Digital Speech Transmitted over HF Radio Facilities STANAG 4198 Parameters and Coding Chara
38、cteristics That Must Be Common to Assure Interoperability of 2400 BPS Linear Predictive Encoded Digital Speech STANAG 4203 Technical Standard for Single Channel HF Radio Equipment STANAG 4285 Characteristics of 1200/2400/3600 bps Single Tone Modulators/Demodulators for HF Radio Links STANAG 4291 Mod
39、ulation and Coding Characteristics That Must Be Common to Assure Interoperability of 2400 BPS Wireline Modems for Use in Narrow-Band Secure Voice Systems STANAG 4415 Characteristics of a Robust, Non-hopping Serial Tone Modulator/Demodulator for Severely Degraded HF Radio Links STANAG 4529 Characteri
40、stics of Single-Tone Modulators/Demodulators for Maritime HF Radio Links with 1240 Hz bandwidth STANAG 4481 Minimum Technical Standards for Naval HF Shore-To-Ship Broadcast Systems STANAG 4591 The 600 Bit/s, 1200 Bit/s, and 2400 Bit/s NATO Interoperable Narrow Band Voice Coder Provided by IHSNot for
41、 ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 3 STANAG 5066 Profile For HF Radio Data Communications FEDERAL STANDARDS FED-STD-1035 Coding, Modulation and Transmission Requirements for Single Channel Medium and High Frequency Radiotelegraph S
42、ystems Used in Government Maritime Mobile Telecommunications FED-STD-1037 Glossary of Telecommunication Terms DEPARTMENT OF DEFENSE STANDARDS MIL-STD-188-141 Interoperability and Performance Standards for Medium and High Frequency Radio Equipment MIL-STD-188-148 (S) Interoperability Standard for Ant
43、i-Jam (AJ) Communications in the High Frequency Band (2-30 MHz) (U) (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government docume
44、nts and publications. The following other Government documents and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DEPARTMENT OF DEFENSE (DoD) DoD 4120.24M Defense Standardization Program (Copies of
45、 this document is available online at http:/www.dsp.dla.mil or from the Standardization Document Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094) DoD JTA Joint Technical Architecture (Copies of this document is available online at http:/www.acq.osd.mil/osjtf/pdf/jta-vol-I.pdf ) 2.
46、3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless specific exemption has been obtained. Provided by IHSN
47、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-188-110C w/CHANGE 1 4 3. DEFINITIONS 3.1 Terms. Definitions of terms used in this document are specified in FED-STD-1037. For the purposes of this standard, definitions are provided for the following terms, som
48、e of which have been repeated, from FED-STD-1037 for the convenience of the reader. Automatic link establishment (ALE). The capability of an HF radio station to make contact, or initiate a circuit, between itself and another specified radio station, without operator assistance and usually under proc
49、essor control. NOTE: ALE techniques include automatic signaling, selective calling, and automatic handshaking. Other automatic techniques that are related to ALE are channel scanning and selection, link quality analysis (LQA), polling, sounding, message store and forward, address protection, and anti-spoofing. Balanced to groun
