National Monitor System (Current and New)

The existing National Monitoring System (MMS), consisting of the necessary technical equipment and system infrastructure established in the 7 Regional Directorates for the purpose of regulating, supervising radio communication traffic, and detecting radio usage violations, along with;

Measurement of broadcast coverage areas, frequency usage density, and technical parameters,
Conducting technical quality controls of AM/FM radio and TV broadcasts,
Detection and resolution of electromagnetic interference incidents,
Locating illegal radio stations,
Collection of statistical data for frequency management purposes

through these activities, state authority and control over radio usage at the national level are ensured.

MMS SCOPE

All kinds of electromagnetic broadcasts in the 10 kHz-2.5 GHz frequency band can be monitored.
Measurements of radio/TV broadcasts are conducted, allowing the detection of quality levels and the resolution of electromagnetic interference issues.
Geographical locations of unauthorized, illegal, or clandestine broadcasting stations are identified.
Detection of radio systems operating outside of granted permissions is ensured, preventing harmful electromagnetic interference they may cause on other legal devices and systems.
It is used in compiling, processing necessary technical data for frequency allocation to ensure that all kinds of radio systems to be established in Turkey operate without negatively affecting each other, determining technical operating criteria, and making the frequency management system more effective and efficient.
It is operated by technical personnel trained specifically for this purpose and equipped with hardware aimed entirely at technical supervision.
Essentially, it will ensure that the public benefits more extensively and at higher quality from radio communication opportunities, and that air and sea navigation systems, which are critical for life and property safety, operate in accordance with international standards and fulfill their functions.

FUNCTIONS

It has three main functions.

1. Monitoring:

Scanning of given frequency bands / frequencies listed,
Measurement of spectrum occupancy,
Detection of illegal uses by comparison with license information in the database.

2. Measurement:

Of the signal received from the air;
Frequency
Frequency Offset
Field Strength
Modulation Depth and Frequency Deviation
Bandwidth
Decoding and measurement of codes for digital signals and Selective Calling signals
Demodulation of appropriate signals for identification purposes and monitoring of their content.
Spectral imaging and measurements

such technical parameters are measured.

3. Direction Finding (DF):

Detection of the direction, and thus the geographical location, of electromagnetic broadcast sources.

SYSTEM UNITS

Consisting of fixed, mobile, portable, and portable stations called;

NCC-National Control Center
RMC-Regional Monitoring Control Center
RRS-Regional Remote Controlled Fixed Monitoring Station
MOBDF-Mobile Direction Finding and Monitoring Station
PDFM-Portable DF and Monitoring Equipment

at the Center and in 7 Regional Directorates.

NATIONAL FREQUENCY MANAGEMENT SYSTEM

The other main component of the system, the NFMS (National Frequency Management System), to increase the performance of RF spectrum usage and management;

Enabling calculations and analyses necessary for frequency planning,
Monitoring
Resolution of electromagnetic interference problems
Spectrum Engineering, EMC analyses, frequency planning and support including Radio-TV
Automation of Spectrum Management tasks,
Preservation of information related to spectrum usage
Licensing and billing of spectrum usage
Allocation and system installation permissions

provides the capability for computer-supported execution of these activities and other related subsidiary tasks.

At the same time, it will support MMS by providing access to National Monitoring System (MMS) resources and enabling automatic data exchange between the two systems.

In 2013, a prototype Mobile Direction Finding Vehicle (MobDF) with an IF Bandwidth of 40 MHz and direction finding capability was produced by ASELSAN A.Ş., the producer of MMS, to meet the needs of our Regional Directorates. With this delivered MobDF, the locations of electromagnetic broadcasts in the 20 MHz – 6 GHz range can be detected.

Mobile Direction Finding (DF) Prototype Tool

NEW NATIONAL MONITORING SYSTEM

Due to the test and measurement devices in the fixed and mobile stations within the existing MMS infrastructure having exhausted their technical and economic lifespans, there is a need for the New National Monitoring System (Y-MMS) project to procure new fixed, mobile, and portable monitoring stations along with vehicles, hardware, and software. In this context, a contract was signed with Aselsan A.Ş. on 18.01.2018, and project development studies continue with the expert teams of both parties taking into account the latest technology and ITU's current recommendation decisions.

System Architecture

Ensuring the use of the scarce resource, the frequency spectrum, without exposure to interference; providing authorized operators and users complaining about electromagnetic interference with their assigned frequencies for interference-free and clean use; and quickly resolving potential interference problems with equipment compliant with ITU's current recommendations and the latest emerging technologies is of great importance.

With the increase in digital and/or low-power broadcasts today, the Y-MMS project will meet the need for monitor systems unaffected by reflections and with increased mobility:

Detection of unauthorized transmissions in the 100 kHz – 8000 MHz range and immediate intervention by determining their locations,
Location detection of transmissions in the 100 kHz – 8000 MHz range,
Contribution to long-term frequency planning based on data obtained from spectrum usage monitoring,
Management of all stations remotely via web-based architecture,
7 TDOA and AOA capable "hybrid" Mobile Stations (MMI),
1 "hybrid" Mobile Station (MMI) with an 8-meter mast,
12 TDOA capable Fixed Stations (SMI),
15 TDOA capable Portable Stations (PMI),
40 MHz DF IF bandwidth, 80 MHz Measurement IF bandwidth capability,
Direction and location finding capability in the 100 kHz – 6 GHz frequency range and performance of analysis and measurements up to 8 GHz,
Capability to perform automatic license violation detection and alarm reporting,
Automatic analog and digital modulation and signal type detection capability,
Automatic and scheduled spectrum occupancy and other spectrum monitoring analyses,
Generation of coverage maps for desired frequencies,
Generation of 2N/3N/4.5N/5N mobile coverage maps

acquisition of these capabilities is planned.