@inproceedings{fdi:010022813, title = {{A}pport des donn{\'e}es du radar-imageur {SIR}.{C} pour la reconnaissance des formations de surface en {T}unisie pr{\'e}saharienne}, author = {{S}imonin, {A}. and {B}urollet, {P}. and {F}ournet, {A}. and {P}arrot, {J}ean-{F}ran{\c{c}}ois and {S}imon, {B}.}, editor = {}, language = {{FRE}}, abstract = {{T}he ability of the multi-frequence and multi-polarimetric {SIR}-{C} data, in surface and subsurface formations study, has been tested over three sites selected in {P}resaharian {T}unisia : {E}l {B}orma, {C}hott {G}harsa, and {C}hott {F}edjej. {T}he datatakes cover 100 km x 30 x 50 km with {C} band (5.3 {GH}z, 6 cm wavelength) and {L} band (1.25 {GH}z, 24 cm). {O}ver each site, the enhanced images of respective polarizations {HH}, {HV}, {HV}-{HH} of {L} and {C} bands have been analysed, combined in color-composite sets, and compared with available maps, {SPOT} and {LANDSAT} data and field investigations. {P}reliminary results provide information on interest of {SAR} multiple frequency and polarimetry in portraying types of surfaces and subsurface units. {T}he detectability of these features hidden many times by eolian sand is dependent on radar frequency. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{FORMATION} {SUPERFICIELLE} ; {GEOMORPHOLOGIE} ; {RADAR} ; {IMAGE} {MULTIBANDE} ; {UNITE} {GEOLOGIQUE} ; {UNITE} {PEDOLOGIQUE} ; {ETUDE} {REGIONALE} ; {RADAR} {SIR} {C} ; {ZONE} {ARIDE} ; {TUNISIE} ; {EL} {BORMA} ; {CHOTT} {GHARSA} ; {CHOTT} {FEDJEJ}}, numero = {}, pages = {87--91}, booktitle = {{GEOFCAN} : actes du 2{\`e}me colloque de g{\'e}ophysique des sols et des formations superficielles : r{\'e}sum{\'e}s {\'e}tendus}, year = {1999}, URL = {https://www.documentation.ird.fr/hor/fdi:010022813}, }