Spectrum_Management.pdf

This Briefing is:

UNCLASSIFIED

Headquarters Air Combat Command

Spectrum Certification

Denise Y Marable

ACC/A6CF

Comm: 757 764-0526 denise.marable@us.af.mil

• Structure

• Spectrum Certification Process

• Creating Certification Requests

Overview

Structure

Federal Communications

Commission (Public &

Non-Fed Govt Spectrum)

National

Telecommunications and

Info Administration

(Federal Govt Spectrum)

Interdepartmental

Radio Advisory Committee

(22 Federal Agencies)

Executive

Branch

U.S. Postal

Service

Transportation State

Energy

Agriculture

Navy

FCC

(Liaison)

DHS

Air

ForceFAACoast

Guard Treasury

Justice

Interior

NASA

NSF

Chairman

(NTIA)

Army

VA

Commerce

BBG

National Spectrum

Legislative

Branch http://www.militaryplaques.com/NASA_Logo_Plaque.html http://www.militaryplaques.com/NASA_Logo_Plaque.html http://www.answers.com/topic/us-deptofenergy-seal-png http://www.answers.com/topic/us-deptofenergy-seal-png http://www.answers.com/topic/us-deptofagriculture-seal-png http://www.answers.com/topic/us-deptofagriculture-seal-png http://www.answers.com/topic/us-deptofstate-seal-jpg http://www.answers.com/topic/us-deptofstate-seal-jpg http://www.answers.com/topic/us-deptoftheinterior-seal-png http://www.answers.com/topic/us-deptoftheinterior-seal-png http://www.answers.com/main/Record2?a=NR&url=http://commons.wikimedia.org/wiki/Image:USCG S W.png http://www.answers.com/main/Record2?a=NR&url=http://commons.wikimedia.org/wiki/Image:USCG S W.png http://commons.wikimedia.org/wiki/Image:United States Department of the Army Seal.svg http://commons.wikimedia.org/wiki/Image:United States Department of the Army Seal.svg http://commons.wikimedia.org/wiki/Image:United States Department of the Navy Seal.svg http://commons.wikimedia.org/wiki/Image:United States Department of the Navy Seal.svg http://www.answers.com/main/Record2?a=NR&url=http://commons.wikimedia.org/wiki/Image:Seal of the US Air Force.svg http://www.answers.com/main/Record2?a=NR&url=http://commons.wikimedia.org/wiki/Image:Seal of the US Air Force.svg http://en.wikipedia.org/wiki/Image:Federal_Aviation_Administration_logo.png http://en.wikipedia.org/wiki/Image:Federal_Aviation_Administration_logo.png http://en.wikipedia.org/wiki/Image:US_Department_of_Homeland_Security_Seal.svg http://en.wikipedia.org/wiki/Image:US_Department_of_Homeland_Security_Seal.svg http://en.wikipedia.org/wiki/Image:FCCSeal.png http://en.wikipedia.org/wiki/Image:FCCSeal.png http://en.wikipedia.org/wiki/Image:NSF_Logo.PNG http://en.wikipedia.org/wiki/Image:NSF_Logo.PNG

Federal Spectrum Management

DoD Spectrum Management

IRAC

AF Spectrum

Management Office

MC4EB*

Frequency

Panel

Joint Frequency

Management Office

Technical support Technical support

Service

Unique Joint

ASD

Spectrum Management

Directorate

NMSCC-E Services

COCOMs

DSO

Spectrum Certification

Process

• Ensures RF dependent systems:

• Operate in frequency band allocated for its use

• Meet national and military EMC standards

• Operate in intended environment without causing problems

• Are interoperable with other systems

Why?

Frequency Allocation

• Conceptual

• Experimental

• Developmental

• Operational

Certification Stages

• Gov’t Sponsor (Requestor)

• MAJCOM Spectrum Office

• Air Force Spectrum Management Office

• NTIA Spectrum Planning Subcommittee (SPS)

• MC4EB Equipment Spectrum Guidance Permanent Working Group (ESG

PWG)

Spectrum Certification Hierarchy

• NTIA Manual

• Chapters 4,5,10 and Annexes J, K and M

• Download from https://www.ntia.doc.gov/page/2011/manual-regulations-and-procedures-federal-radio-frequency-management-redbook

• AFI 17-220

• AF process for obtaining spectrum support

References https://www.ntia.doc.gov/page/2011/manual-regulations-and-procedures-federal-radio-frequency-management-redbook

Creating Certification Requests

• EL-CID (Equipment Location-Certification Information Database)

• Download from NTIA website--http://www.ntia.doc.gov/el-cid-support-center

• Requestor funded training available--https://www.ntia.doc.gov/spectrumtraining/el-cid-spectrum-certification-today

• DD Form 1494

• DoD & NTIA General Information / Line Diagram - (Gov’t Sponsor)

• Transmitter / Receiver/ Antenna- (Manufacturer)

• Excel Spreadsheet

• Available via email request to acc.a6cf@us.af.mil

• Stepstone

• AF transitioning--start accepting requests in summer 2018

Ways to Submit Requests http://www.ntia.doc.gov/el-cid-support-center https://www.ntia.doc.gov/spectrumtraining/el-cid-spectrum-certification-today

• Occupied Bandwidth: The width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage of the total mean power of a given emission. 2/β

• Unless otherwise specified by the ITU-R Recommendation for the appropriate class of emission, the value of should be taken as 0.5%. 2/β

• Necessary Bandwidth: For a given class of emission, the width of the frequency band which is just sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions. (NTIA Manual Annex J contains formulas used to calculate necessary bandwidth.)

Emission Bandwidth Definitions

Emission Designator Breakdown

First Four Characters: Identify the necessary bandwidth required to transmit the desired information at the rate and with the quality required for the system to operate

Fifth Character: Identifies the type of modulation of the main carrier

Sixth Character: Identifies the nature of signals(s) modulating the main carrier

Seventh Character: Identifies the type of information that is to be transmitted

1 2 3 4 5 6 7

6 K 0 0 A 3 E

Seven Characters of the Emission Designator

• Decimal point is replaced with unit of Hertz (H, K, M, G)

• Between .001 and 999 Hz = H

• Between 1.00 and 999 KHz = K

• Between 1.00 and 999 MHz = M

• Between 1.00 and 999 GHz = G

Necessary Bandwidth

First Four Characters of the Emission Designator

1 2 3 4

6 K 0 0

Type of Modulation

A

Fifth Character of the Emission Designator

Types of Modulation:

Unmodulated Carrier: N

Main Carrier is A Double-Sideband amplitude modulated H Single-sideband, full carrier

R Single-sideband, reduced or variable level carrier

J Single-sideband, suppressed carrier

B Independent sidebands

C Vestigial sideband

Main carrier is angle F Frequency Modulation modulated G Phase Modulation

D Main carrier is amplitude AND angle-modulated

Emission of Pulses: P Sequence of unmodulated pulses

Sequence of Pulses: K Modulated in Amplitude

L Modulated in width/duration

M Modulated in position/phase

Q Carrier is modulated during period of pulse

V Combination of pulse modulation characteristics

Combination:

W

Combination of two or more modulation modes:

amplitude, angle, and pulsed

Other: X Cases not otherwise covered

Nature of Signal

Sixth Character of the Emission Designator

Nature of Signal(s) 0 No Information Transmitted

Modulating the main carrier:

Single channel containing quantized or digital information without the use of a modulating sub-carrier, excluding time-division multiplex

Single channel containing quantized or digital information with the use of a modulating sub-carrier, excluding time-division multiplex

3 Single Channel containing analog information

7 >1 channel containing quantized or digital information

8 >1 channel containing analog information

Composite system with one or more channels containing quantized or digital information, together with one or more channels containing analog information

X Cases not otherwise covered

Type of Information N No information Transmitted to be transmitted:

A

Telegraphy - for aural reception

B Telegraphy - for automatic reception

C Facsimile

D Data transmission, telemetry, telecommand

E Telephony (including sound broadcasting)

F Television (video)

W Combination of the above

X Cases not otherwise covered.

Type of Information Transmitted

E

Seventh Character of the Emission Designator

6K00A3E 6 kHz Necessary Bandwidth, Double-sideband, Single channel containing analog information, telephony (sound broadcasting)

15M8V3N

15.8 MHz Necessary Bandwidth, Combination of pulse characteristics, single channel containing analog information, no information transmitted

8M00W7D 8 MHz Necessary Bandwidth, Combination of two or more modulation modes, two or more channels containing quantized or digital information, data transmission, telemetry, telecommand

Emission Designator Examples

• RADARs

• Provide description of each mode (SAR, GMTI, etc.)--include pulse rates/width/duration

• Spread Spectrum

• Explain technique (frequency hopping, direct sequence, hybrid of direct/frequency hopping)

• Modulation Schemes

• Provide techniques used (FM, BPSK, QPSK, etc.)

Amplifying Information

• External Filters / Amplifiers

• Provide manufacturer name/model number and reason for use

• Tuning Range/Separation Criteria

• Explain any modes/factors that may affect transmit frequency(ies)

• Identify Transmitter Function

• (Have Quick, SINCGARS, SATCOM…)

Amplifying Information

• Spectrum certification does not grant approval to radiate

• NTIA Manual contains federal RF spectrum standards

• Spectrum certification lengthy process--minimum 6-12 months

• Ensure spectrum certification request provides complete picture

• Provide detailed description of emission characteristics, modes, etc.

Take Aways

QUESTIONS??

Back-up Slides

Excel Spreadsheet

DD Form 1494 Transmitter Page

DD Form 1494 Receiver Page

DD Form 1494 Antenna Page