1. Belarusian State University Informatics and Radioelectronics
Department of «Methods and systems of Information
protection, Information security»
HENRY AFAM OKPALA
Development of Methodology for accessing reduction
of Thermal Signature of objects in the Infrared range by
using flexible water-based paintings
Supervisor: Dr.Sc.Prof Lynkov Leonid,
Dr.Sc.Ass.Prof Borbotko Timothy V.
Belarusian State University of Informatics and Radioelectronics,
P. Brovki Str.,6,220013 Minsk, Republic of Belarus
2. Main goal of the dissertation is the development of modern
method of information protection against leakage through thermal
channel. The Infrared signature of the object of observation
formed by the heat radiated from an outer surface is being
calculated. The visible range and IR range which is observed or
detected by use of machine vision is also carried out. Exchange or
heat transfer of internal energy from warm or hot surface of
observed object in environment) occurs spontaneously.
3. Structure of the thermal channel information leaks
Propagation
medium
Object of
observation
interference
Means of
vision
5. • The IR radiation power range of the object depends on its
temperature or power incident to the infrared radiation and
the reflectivity of the object in the respective spectral range.
Emissivity for real objects of observation varies over the
spectrum and is determined in accordance with Kirchhoff's
law ratio of the spectral radiance of the object to the
spectral density of the energy brightness of the blackbody ,
which has a maximum energy of thermal radiation in
comparison with all other sources at the same temperature.
7. • External surfaces of moving objects heated by:
• 1. Self heating (occurring during operation of the object and / or due to
mechanical load of some components).
• 2. Heating while driving.
• Exhaust gases are due to the presence of impurities in carbon black and
several other substances are also captured in the short- and long-wave
infrared wavelength range.
• During the movement of the observed object its IR signature is
undergoing dramatic changes. For example, when rotating the turret, a
large amount of heat, which is accompanied by heating of the actuators.
The process of firing tank gun leads to heating of the instruments and
the internal volume of the tank, resulting in the Imager clearly heating
joint turret and hull tank
8.
9. Survey thermo grams recorded to the internal memory of
thermal tensor for further processing using special software
(OSS), which was used as a Guide IrAnalyser. With the help of
the open source software while viewing thermal images reveal
the modulus STZ sites with broken thermal barrier properties.
These include land, a thermal image which does not match the
model of the thermo gram. Sharper images ensured by the by
selecting the appropriate palette palettes panel
10.
11. The appearance of the main window Guide IrAnalyser
the construction of thermo
12. Development of methodology for calculating the range of
detection, recognition and identification of the object of
observation
Use the following number of strokes equivalent worlds:
– Detection – 2…3;
– Recognition – 6…8;
– Identification – 10…12.
Range of detection, recognition and identification of the object observation can
be determined taking into account the noise equivalent temperature difference
(NETD)
where Tpor – thermal sensitivity threshold temperature;
T0 – temperature of the surface of the object;
Tf – the surface temperature of the background;
τ – The atmospheric transmission coefficient.
ф0
пор
TT
T
ln
D
13. Detection range ground object
№
Name of module design
STZ Detection range, km
Reducing the range
of detection, time
1
A single-layer structure with
liquid cooling
4,31 1,45
2
Single-layer construction
with air-cooled
5,99 1,04
3
Multi-layer construction
with liquid cooling
4,31 1,45
4
The multilayer structure
with an air cooled
5,41 1,15
5
Multi-layer construction
with a combined cooling 5,16 1,21
14. Dependence of the maximum range of detection, recognition and
identification of ground object in terms of its poor visibility on its
size by using the thermal imager with a narrow field of view
15. CONCLUSION
Currently, the development of modern methods and means of
information leakage on thermal channels is relevant.
Protection of information leakage through channels provided by
heat with the use of thermal protection. In developing the technical
means of information important task is to assess their effectiveness.
Thermal imaging technology indicators significantly affect the
characteristics of the thermal channels of information leakage. Most
important to obtain information from them as follows:
- The range of wavelengths;
- Sensitivity;
- Resolution;
- Angle ( field) of view.
