Development of microsatelite scanning system of the terrestrial surface

Code: 11.838.06.07A
Title: Development of microsatelite scanning system of the terrestrial surface
Programme: Exploitation of renewable energy resources in conditions of the Republic of Moldova and development of Moldavian Microsatellite
Execution period: 2011-2012
Institutions: Ghitu Institute of Electronic Engineering and Nanotechnologies, ASM
Project Leader: Kantser Valeriu, academician of ASM, dr. hab., prof.
Participants: Laboratory of Solid State StructuresLaboratory of Electronics of Low Dimensional Structures, „Comelpro” SRL
Keywords: Scanner, microsatellite, space, resolution



The proposed project is a part of the State Program "Development of Moldovan Satellite", which includes the development of a space unit that falls into the class of low-earth orbit (the orbit altitude is 500-600 km) microsatellites (with a weight up to 50 kg). The ogoing program is in line with the priorities of the country focused on solving some urgent problems related to: electronic information processing for land-use neeeds; monitoring/forecasting landslides; monitoring/forecasting hail cloud formation and migration; monitoring plantations and agricultural lands; environmental monitoring: woodlands and evolution aquatic resources in rivers and lakes; providing various hydrological services; obtaining camera information for other purposes, etc.

In terms of structure, the program consists of two components: cosmic and terrestrial. The cosmic component comprises a microsatellite. The terrestrial component covers a ground-based facility to operate the microsatellite; a center for receiving and processing data from the satellite.

The proposed project provides for the development of one of the microsatellite components, i.e., a system for scanning the earth surface.

Technical characteristics of the scanning system:

  • Working orbit range: 500-600 km;
  • Satellite velocity: 7054, 6903, 6757 ΠΌ/s
  • Detection bandwidth (700 km): 220 km;
  • Lens Focal Length: F = 200 mm;
  • Diaphragm, F no worse than F/D = 5.6;
  • Projection of a point on Earth (700 km): 25 m
  • Number of elements in the detection zone (a KLi-8811 photodetector): 8800;
  • Spectral range: 450-950 nm
  • Number of spectral channels: 4;
  • Spectral range of channels. [B: 450 - 520], [G: 540 - 590], [R: 630 - 680], [NIR: 750 - 950] nm
  • BC working angles (SNR. 30): 15°-90 °;
  • maximum resolution of radiation: 0.3%;
  • 12-bit digital signal;
  • LVDS target-data output interface: standard ANSI/TIA/EIA-644;
  • Maximum flow rate: 64 Mb/s;
  • Aspect ratio of digital media: 1.0 < K < 1.2, lossless compression;
  • Interface control: RS-485;
  • Energy consumption: no more than 7 W.