International Archives of Photograinmetry and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE in. Vienna. 1999 
158 
ISPR5 
VNISPACE HI-ISPRS/NASA Seminar on 
“Environment and Remote Sensing for Sustainable Development” 
9:00 am -12:00 pm, 23 July 1999, VIC Room A 
Vienna, Austria 
Multifunctional Optoelectronic System for Aero-space Monitoring (MOSAM) 
K. Iliev, I. Dimitrova, N.Dimitrov ! , Prof. C. Voute 2 , Dr. A. Ivanova 3 , K. Popov 4 
1 Space Research Institute. 6, Moskovska Str, Sofia 1000, Bulgaria, kiliev@cbhnk.net 
2 Adviser, Netherlands 
3 Biological Faculty of Sofia University, Bulgaria 
4 Mining Geological University of Sofia, Bulgaria 
KEYWORDS: Megapixel CCD area camera, Stereo imaging, CCD area video spectrometer, Image processing and remote sensing. 
Ecology monitoring and mapping 
ABSTRACT 
A multifunctional hyper spectral optic-electronic system has been developed a including High Resolution Panchromatic CCD Camera 
in the visible range and CCD Video Spectrometers in the visible, near IR range and middle IR ranges. The system architecture is 
presented on fig.l. Such a system, based on an airborne platform is capable to perform earth observations and monitoring of lire 
country and the region to ensure actual information for the processes of global environmental changes. The combination of new 
generation optic-electronic sensors, the powerful information systems and the onboard software offers possibilities to acquire, process 
and analyse extremely important earth surface observations. This system is unique for its instrumentation and capabilities. 
The Megapixel Panchromatic CCD Camera is capturing high resolution images and stereo images. On tliis base are generated Digital 
Terrain Models (DTM) for precise mapping. In April 1999 were held the first successful flight tests of the camera on board of an AN- 
30 aircraft. 
The CCD Video Spectrometer, based on back illuminated CCD area sensor - diffraction grating, with spectral sampling interval 4- 10 
nm, can detect spectral fine structures. In July 1999 will be held the laboratory tests of the spectrometer. 
The system architecture is modular and allows flexibility to support the increasing number of applications, such as: 
• precise mapping and analysis of natural disasters; 
• ecological monitoring, risk mitigation and management of technological hazards; 
• monitoring and managing processes in coastal and inland waters: 
• geological investigations and mineral mapping. 
Tliis system is prepared for taking part in the V-Th European Community Framework Programme. 
1. INTRODUCTION 
In view of the more and more complex problems and 
interrelations involved in the evaluation of the man-made impact 
on the environment, it has become necessary to develop and 
improve special sensors and systems for the remote sensing of 
the Earth. The Research and Development (R&D) involved lias 
to take into account that the remotely sensed data thus acquired 
should be adequate for the complex tasks to be performed, and 
moreover, that they would enable an easy calibration and 
correlation of the data. 
In addition to the more or less traditional satellite systems for 
remote sensing such as LANDSAT and SPOT of the eighties, 
JERS, ERS, IRS and other satellite systems of the ninetieths, and 
the modules developed for remote sensing studies on-board of 
man-operated oibital complexes like MIR and Shuttle, a new 
generation of remote sensing systems were developed, namely air 
and space-based video spectrometers, which also performed 
successfully. 
More than two dozens of such systems were developed during 
the last 10 years to study the electromagnetic spectrum from the 
visible to the thermal bands. Each of these systems has been 
created to solve separate technological problems or for special 
applications. The first systems such as “AIS”, “AVIRIS” (from 
NASA-JPL, USA), CASI (from Intres Research, Canada), 
ARES (from Lockheed, USA) [4,5j were developed in order to 
study experimentally and to determine the radiometric, 
spectrometric and spatial possibilities of these systems. Their 
successful missions enabled the acquisition and storage of 
enormous databases on the radiometric and spectral reflectance 
characteristics of the earth surface. 
The next generation of systems such as “DAIS” (from DLR, 
Germany), MAS and MISI (from Daedalus, USA) covered the 
whole range of wave lengths from 0.4 to 12 pm (micrometers), 
and were the first systems which studied simultaneously the 
same object in all ranges (visible VIS, near infrared NIR, middle