Radio Monitoring Network
an advanced radio monitoring system, along with its features, functions, operational principle and technical specifications. We can provide professional radio monitoring, DF equipment and the associated specialized radio monitoring network applying software for the user and provide the complete technical solution scheme for the radio administrative department.
GENERAL
System Objectives
The main objective of the network is to achieve a real time monitoring on the radio spectrum environment. The system will provide the operators with accurate locating and the detailed parameters of the interested radio emitters. The system helps to establish effective measures to protect the legal radio, broadcast, TV, remote control stations, and to found/clear out the illegal ones. With its powerful spectrum monitoring and DF capability, the network is proved to provide useful application as follows:
- National/provincial/city radio spectrum monitoring/management, frequency allocation/control.
- Locating the illegal radio transmission.
- Intelligence application on interested place/facilities, such as monitoring the bugging devices and interested radio activity.
- Electromagnetic environment survey before establishing radio communication stations and electronic systems, such as radars, microwave relay, etc.
- Environment monitoring around radio/TV station, civilian/military system, so as to ensure long-time good operation.
Military & Intelligence & Civilian Worthiness
Military Worthiness:
It is important to maintain the normal operation of various electronic system/equipment, such as radar, communication relay, and the electronics on combat platforms, such as air-fighters, whose performance depend largely on electromagnetic compliance and is severely degraded by radio interference of the environment. Therefore, the proposed system/subsystem will be very useful for the following purposes:
- Arrange/allocate/manage the frequency band for various military systems, during both peacetime and wartime. These systems will interfere with each other, for example, land-based & airborne radar receiver may be jammed by own CW signals of communication and performance to be greatly degraded. Therefore, it is very important to manage the multi-purpose radio spectrum by frequency arranging/allocating/management, so as to maintain normal operation of these expensive systems in use.
- Site selecting of military systems, such as radars, EW, wireless communication (relay, repeaters, and etc.). Their deployed location (fixed or mobile deployed) is vital, and their performance will depend on the electromagnetic compliance of outside environment and user may suffer from huge loss of input for improper location. Therefore, we advise that users of these systems employ the proposed systems for selecting the right location of lest interference for deploying the military equipment.
- Find and locate the interference source to military systems. After the site of deployment is selected, it is also important to locate and prevent future interference to them from nearby military or civilian equipment, and keep safe/good operation.
Intelligence Worthiness:
The proposed system is useful for gathering intelligence interested by the user, and is used to monitor and locate interested radio transmission (such as in some interested facility, border area), including:
- Communication: the system can find, monitor and listen the interested radio transmission, such as U/VHF/MW radio communication within border areas, foreign embassy, and etc.
- Bugging devices: the hand-hold DF equipment is available for detecting bugging devices in user’s important facilities.
Civilian Worthiness:
Radio Spectrum Allocation and Management
- Help to develop national spectrum resource policy
- Allocate spectrum and issue license to legal subscribers
- Charge fee from legal subscribers
- Monitor, record, and locate illegal users (illegal TV/BC station, radio communication). It is very useful to listen and locate broadcasting/TV stations that send out illegal or hostile contents to own side.
- Impose penalty on illegal subscriber and protect legal users
Broadcasting Station Monitoring
- Analyzing the signals of TV/Broadcasting stations, and find out if the quality is ok by detailed technical signal analysis of the proposed system.
- Provide data for trouble shooting and signal improvement.
- Prevent Illegal Radio Broadcasting of unauthorized content.
EMC
Solving the problem of electromagnetic compliance problem of civilian systems.
System description
System Composition
Radio monitoring and management network is classified as level-A, B and C in general. Level-A network is suitable for national, provincial and metropolis administration, level-B for medium-size regions/cities and level-C for small cities/counties. Basically, their compositions and structure are similar, while the quantity and type of equipment employed are different, depending on the monitoring requirement.
Generally, a radio monitoring network comprises a control center, fixed configuration monitor station, and unmanned remote monitor station, mobile monitor station and portable monitor station. The quantity of monitor networks for different levels depends on the practical situation. Monitor stations can work independently or be networked with the control center to achieve networked monitoring, direction-finding (DF) and triangulation against illegal radio. The block diagram of the network is shown in Fig 1. The composition of the network can be customized.
Networking Mode
a.Connection between the control center and the central fixed configuration monitor station.
Normally, the central fixed configuration monitor station and the control center are placed in the same room and connected by LAN.
b.Connection between the control center and remote monitor stations
The remote monitor station is far from the control center and they are usually connected by wired public network (ISDN, DDN, FR), and can also be connected by wireless digital microwave point-to-point communication to meet the requirement of specific situation.
c.Connection between the control center and the mobile/portable monitor stations.
For mobile/portable station to work in places where public mobile phone network is available, the stations can be connected by mobile phone network of CDMA1x, GPRS or GSM, to send data to each other and to control center. It is a cost-effective way.
For the places where mobile phone network is not available, V/UHF radio will be used for data transmission.
Both ways are available and depend on user’s requirement.
System Block Diagram
SUB-SYSTEM DESCRIPTION
The proposed system is a standard solution for national scale and coverage, and the composition and frequency range can be customized and designed as per the user’s requirement.
CS-806AH Dual-channel Fixed Configuration Monitor Station
Main Features
OPEN- Powerful networking function: the system employs standard XML data format, which is easy to interface with other systems; Special protocols based on memory architecture or message mode, as well as other transmission protocols based on XML, are also compatible.
- State-of-the-art technology: Leading edge technologies are adopted for the R&D and manufacturing of the system.
- Outstanding technical performance:the system features high sensitivity, large dynamic range, fast wide-band searching measurement, and can be utilized with combination of wide-band and narrow-band, which comply with requirement of ITU measurement technology.
- Advanced DF system: the system employs dual-channel correlation interferometer for Direction Finding, which features high DF sensitivity/accuracy, anti-interference and fast DF speed (2-3ms) and etc.
- Multiple DF capability:wide-band real-time FFT DF (wide-band of 10MHz), fast scanning DF 200MHz/S (with interval of 25KHz), vertical-and-horizontal dual-polarization correlation interferometer DF.
- Large aperture DF antenna array:the system use a large aperture passive DF antenna array (3 meters) for low-band DF(20-200MHz), which not only enhances the anti-multipath-interference capability on low-band, but also completely eliminates the risk of inter-modulation interference that low-band signals usually generate in the antenna.
- Cost-effective:As - implements cost-control procedures during the development and manufacturing, the system enjoys outstanding cost-effectiveness. This ensures the users obtaining best functions and performance with minimum cost.
- Remote-control:the fixed station can stand alone and be remotely controlled by the control center. Alarm device against thief break-in, fire, water will be installed, and data and operation status of the station will be transferred to the control center by cable or wirelessly.
Technical Specifications
The main technical specification of CS-806AH fixed configuration monitor station is as shown in the following table:
- Working frequency range
- Monitoring: 20~3000MHz
vertical DF: 20~3000MHz
horizontal DF (optional):30~1300MHz
- DF system
- Dual-channel digital correlation interferometer
- Directional Antenna
- Omni-directional Antenna
- Frequency resolution
- 1Hz
- Frequency stability
- ≤1×10-7
- Demodulation mode
- AM,PM,FM,PULSE,CW,LSB,USB,ISB,IQ
- IF analyzing band width
- Totally 23 types in 1.5KHz～10MHz
- Level measuring accuracy
- ≤2dB
- Field intensity measuring accuracy
- ≤3dB RMS
- Channel scanning speed
- ≥200 channels per second
- Continuous Scanning Speed
- ≥：2000MHz/S
- DF accuracy (standard field without reflection)
- ≤2°RMS
- DF sensitivity (standard field without reflection)
- Vertical:100~1300MHz:1~10μV/m
20~100MHz，1300~3000MHz:3~15μV/m
Horizontal: 30~1300MHz:3~15μV/m
- Minimum DF standing time
- ≤2ms
- DF band width
- 3KHz~2MHz (no less than 10 types)
- FFT DF band width
- 100KHz~10MHz
- IP2
- IP2≥40dBm
- IP3
- IP3≥10dBm
- Image suppression
- ≥90dB
- IF suppression
- ≥80dB
- Receiver local oscillator radiation
- ≤-105dBm
Composition
The system block diagram is as shown in the following figure:
CS-806BH Mobile Dual-Channel Monitor Station
Main Features
OPEN- Mobility:Mounted on a vehicle, the system will be quickly deployed and complete its mission in city and in wide field.
- Powerful networking function:the system employs standard XML data format, which is easy to interchange with other systems; Special protocols based on memory architecture or message mode, as well as other transmission protocols based on XML, are also compatible.
- State-of-the-art technology:Leading edge technologies are adopted for R&D and manufacturing of the system.
- Outstanding technical performance:the system features high sensitivity, large dynamic range, fast wide-band searching measurement, and can be utilized with combination of wide-band and narrow-band, which comply with requirement of ITU measurement technology.
- Advanced DF system:the system employs dual-channel correlation interferometer for Direction Finding, which features high DF sensitivity/accuracy, anti-interference and fast DF speed (2-3ms) and etc.
- Multiple DF capability:wide-band real-time FFT DF (wide-band of 10MHz), fast scanning DF 200MHz/S (with interval of 25KHz), vertical-and-horizontal dual-polarization correlation interferometer DF.
- Large aperture DF antenna array:the system use a large aperture passive DF antenna array (3 meters) for low-band DF(20-200MHz), which not only enhances the anti-multipath-interference capability on low-band, but also completely eliminates the risk of intermodulation interference that low-band signals usually generate in the antenna.
- Cost-effective:As - implements cost-control procedures during the development and manufacturing, the system enjoys outstanding cost-effectiveness. This ensures the users obtaining most functions and performance with minimum cost.
- Remote-control:the fixed station can stand alone and be remotely controlled by the control center. Besides, alarm device against thief break-in, fire, water will be installed, and data and operation status of the station will be transferred to the control center.
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Fig. 5 CS-806BH Carried by Mini Bus - Fig. 6 CS-806BH Carried by Off Road Vehicle
- Fig 7. CS-806 Cabinet inside the Vehicle
- Fig 8. Dual-Display inside Vehicle Cabin
Vehicle-body-Calibration Technology
CS-806BH adopts the “Vehicle-Body-Calibration Technology” to completely eliminate vehicle-body influence.
Because the vehicle-body is a conductor, the DF antenna array will be influenced by vehicle-body after the system is installed on the car. The DF specification will be worsened therefore. This is a common serious problem in any mobile monitor DF system.
developed a unique technology called as “entire vehicle calibration technology” based on the mechanism on both theory and vehicle-body influence. The influenced data of the vehicle will be written into standard data group, the negative influence of the vehicle-body will be automatically removed (reduce to the minimum limitation) during the associated procedure so as to successfully resolve the technical problem of vehicle-body influence after DF equipment installation. This technique guarantees high accuracy DF after the installation of the equipment.
After vehicle-body calibration, DF accuracy on main frequency-band can reach ≤ 2°RMS, and DF sensitivity can reach ≤10μV/m.
Technical Specifications
The main technical specification of CS-806AH fixed configuration monitor station is as shown in the following table:
- Operating frequency range
- Monitoring: 20～3000MHz
Vertical DF: 30～3000MHz
Horizontal DF(optional): 40～1300MHz
- DF system
- Dual channel digital correlation interferometer
- Frequency resolution
- 1Hz
- Frequency stability
- ≤1×10-7
- Demodulation mode
- AM、PM、FM、PULSE、CW、LSB、USB、ISB、IQ
- IF analysis bandwidth
- There are 23 types for 1.5KHz~10MHz.
- Level measurement accuracy
- ≤ 2dB
- Field intensity measurement accuracy
- ≤ 3dB RMS
- Channel scanning speed
- ≥ 200 channel/sec.
- Continuous Scanning Speed
- ≥：2000MHz/S
- DF accuracy (standard field without reflection after vehicle body correction)
- ≤ 2°RMS
- DF sensitivity (standard field without reflection after vehicle body correction)
- Vertical: 100～1300MHz:1～10μV/m
30～100MHz，1300～3000MHz:3～15μV/m
Horizontal: 40～1300MHz:3～15μV/m
- Minimum DF existence time
- ≤2ms
- DF bandwidth
- 3KHz～2MHz (no less than 10 kinds)
- FFT DF bandwidth
- 100KHz～10MHz
- IP2
- IP2≥40dBm
- IP3
- IP3≥10dBm
- Image suppression
- ≥90dB
- IF suppression
- ≥80dB
- Local oscillator radiation of receiver
- ≤-105dBm
Composition
CS-806BH Composition Block Diagram CS-805F Portable Monitoring Station
CS-805F portable monitoring station is a high-performance radio monitoring and DF system designed and developed based on the concept of individual portability, which features high performance, fast setup, light weight and easy for transportation. It can be operated independently or networking, and suitable for using on the roof of city buildings or field conditions.
Main Functions
- Automatic comparative analysis of signals；
- Automatic comparative analysis of electromagnetic spectrum backgrounds；
- Signal feature analysis and identification；
- Signal modulation mode identification；
- ITU-R parameter measurement；
- Radio DF；
- Signal monitoring and recording；
- Networking monitoring and DF.
Main Features
- Small volume: able to easily get through any high-rise building louver;
- Light weight: able to be carried by one person for operation;
- Short setup time: able to be set up by one person within 10 minutes;
- CS-805F portable monitoring station can equip the accurate high-aperture DF antenna array for operation, which cover the frequency range of 20MHz～200MHz to realize low frequency band accurate DF. The said DF antenna array adopts high-aperture design with diameter of 2m and it can be used independently or combined with the 20MHz～3000MHz dual-polarization antenna array.
Main specifications
OPEN- Frequency range: 20MHz~3000MHz
- Monitoring sensitivity：≤10μV/m
- IF bandwidth:0.15kHz~25MHz
- Continuous scanning speed:≥3GHz/s(resolution: 25kHz)
- Signal modulation mode identification:CW, AM, FM, 2ASK, BPSK, QPSK, 8PSK, 16QAM, 2FSK, 4FSK, MSK, etc.
- DF sensitivity:≤10μV/m
- DF accuracy:≤2° (R.M.S.)
- Minimum DF time:≤1ms
- Weight of 20MHz〜3000MHz antenna array:≤9kg
- Weight of 20MHz〜200MHz antenna array:≤22kg (option)
- Portable power supply time:≥6h
Control Center
Generally, the control center is classified as several levels, different levels of the center have different configurations, and here, we just introduce the general configuration.
Hardware
The control center is composed of a server (application server, database server), control center station (remote monitor station, triangulation station, remote control station, mobile station etc.), network communication system (exchanger, Router and modules supporting various communications), auxiliaries (printer, recording equipment, projector), UPS system, control central cabinet and workbench etc.
Application software
The software installed in the control center is a network version of specific radio monitoring software, CS-RM&DF4.0 for Networks. The software is composed of following modules:
- remote monitoring DF software
- triangulation software
- remote control software
- database service software
- post-mission assessment software of the monitored data
- electronic map software
- network communication software
radio monitoring application software CS-RM&DF4.0
The professional radio monitoring software CS-RM&DF 4.0 provides off-line version and network version. It provides not only the powerful radio monitoring direction finding function, triangulation function, E-map function, but also the networking function. The off-line version is mainly used by single station equipment (CS-806, CS –805, CS-803 etc), and the network version is mainly used by the control centers in different level. The software is professional radio management software, which features various functions, graphic MMI and easy to operate. It satisfies various requirement for radio monitoring and provides software solutions for radio monitoring and management network of different levels.
perational Environment for CS-RM&DF4.0
- Operation system: Windows 2000 Professional or XP
- Development environment: Microsoft Studio Visual C++ 7.0
- Structure of the application software: Client/Server
- Database environment: Oracle or SQL server
- E-map: MapX 4.0
Main Functions of CS-RM&DF4.0
- ITU Measurement Function:Measuring the signal central frequency, level (field intensity), band width, frequency deviation, frequency shift, modulation degree.
- Scan Monitoring Function:Measuring the frequency band scanning, discrete channel scanning, channel occupied degree.
- Radio Direction Finding Function:Single frequency DF, wideband multi-signal DF, FFT scanning DF.
- Triangulation Function:Multi-station triangulation in real-time, post-mission triangulation, cross point analysis
- Audiomonitoring, record and playback function:
- Signal Analysis Function:Frequency domain (frequency spectrum analysis), time domain (level analysis) and modulation domain (modulation measurement), intermodulation analysis, stray analysis etc.
- Real-time Data Recording Function
- Monitoring Result Reporting Function
- Monitoring Result Statistical Analysis Function
- Monitoring Result Loading and Unloading Function
- Geographic Information (E-Map) Operation
- Remote Management and Environment Monitoring Function
- Database Management Function
INTEGRATED LOGISTIC SUPPORT (ILS)
ILS is a management approach combining organizational elements and activities related to the system operation and support throughout the operational life cycle of the system.
ILS covers all stage of system life cycle, from system proposal preparation through development, production, provisioning and maintenance during operational use, to disposal from service.
ILS is designed to ensure high system availability through its life cycle, at optimal cost.
The objective of ILS is to ensure the availability of the system by providing support at the right locations and at the right time throughout the lifetime of the system.
The contents of the ILS shall include the following items:
- Recommended spares
- Initial tools & instruments
- Maintenance and test equipment
- Technical documentation
- Technical training
- Quality Warranty
To enable the supportability of “in-country maintenance” after warranty period, a program will be provided by the OEM. Terms and conditions for this program will be discussed and agreed upon.
Implementation Plan
It is advised that the network be established step by step, first for one city or one military area, thereby the user will be more familiar with the proposed system, and the system will prove its own worthiness in cost effective way for the user.
After using the system in one city, if satisfied with its performance, the user may choose to expand the coverage of the network to other big cities, and later to other places.
Chinese side will be active to respond to user’s detailed requirement.