Romulus: Along Track Formation of Radar Satellites for MTI (Moving Target Identification) and High SAR Performance
| Autor: | J.-P. Aguttes, B. Vaizan, Céline Tison, T. Amiot, J.-P. Ovarlez, J.-D. Desjonqueres, J. Chretien, S. Attia |
|---|---|
| Přispěvatelé: | Sondra, CentraleSupélec, Université Paris-Saclay (SONDRA), ONERA-CentraleSupélec-Université Paris-Saclay, ONERA - The French Aerospace Lab [Châtillon], ONERA-Université Paris Saclay (COmUE) |
| Rok vydání: | 2006 |
| Předmět: |
Synthetic aperture radar
0209 industrial biotechnology Space technology Radar tracker Computer science X band 02 engineering and technology Track (rail transport) 01 natural sciences law.invention Radial velocity 020901 industrial engineering & automation [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing law 0103 physical sciences Satellite Antenna (radio) Radar 010303 astronomy & astrophysics ComputingMilieux_MISCELLANEOUS Remote sensing |
| Zdroj: | 2006 IEEE International Symposium on Geoscience and Remote Sensing 2006 IEEE International Symposium on Geoscience and Remote Sensing, Jul 2006, Denver, United States. pp.3838-3841, ⟨10.1109/IGARSS.2006.984⟩ |
| DOI: | 10.1109/igarss.2006.984 |
| Popis: | The concept implements the coherent combination of an along track formation of typically 4 SAR satellites spaced by few meters. Formation Flying is shown to extend the usual space borne capabilities: MTI (STAP technique) with 2 m/s minimum detectable radial velocity and high performance SAR (SAR Train technique) with 0,5 to 1,5 m resolution up to very high incidence (70°). Two formations on a same orbit plane provide a 12 hours revisit. Reflect array antenna technology combined with satellite attitude agility allow up to five data takes (10 km x 10 km scenes) on theatre of 300 to 500 km sizes. Very High SAR resolution SAR (0,3 meter) is also provided. Romulus is part of the joint CNES/ONERA programme that covers all the formation flying research and advanced project studies whatever the application area, astronomy, observation. I BACKGROUND AND OBJECTIVES For several years, a research program of ONERA has studied the Radar capabilities of along track radar formations for Moving Target Identification (MTI) and developing the corresponding algorithms, particularly around STAP. On its side, CNES has developed an expertise and pioneered the SAR formation flying through the detailed studies of the now well-known Cartwheel concept. CNES has also performed studies on small X band SAR satellites (< 200-300 Kg) and related technologies (reflect arrays) able to be flown in formation together with the development of specific along track formation flying techniques like the SAR train that dilute the antenna area and power requirements on N smaller satellites to reach high SAR image performances. Based on these previous research and technology activities, the Joint CNES ONERA Romulus study aims at defining and optimising a future mission for MTI and high SAR performance for military and civilian surveillance. The study is performed within PASO (Plateau d'Architecture des Systemes Orbitaux), the CNES organisation in charge of pre-feasibility studies. This study is "technology oriented" since it aims at addressing the capabilities of SAR formation flying techniques with respect to potential future needs rather than to answer to formal requirements from Defense or Civilian Security authorities. Nevertheless, the driving user needs for a system providing SAR and MTI can be easily anticipated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|