Imaging Radars
type: Concept

TSX-1
type: Concept
change note: 2019-03-18 12:51:44.0 [mmorahan] insert WeightedRelation (id: null related concept uuid: a5c7a4c7-bbf4-42df-a754-20cb6b98317a relationship type: null relationship value: null generated by: null);
change note: 2019-03-19 12:44:22.0 [mmorahan] update Definition (Primary Payload: the Synthetic Aperture Radar (SAR) The primary payload is a Synthetic Aperture Radar (SAR) with an active antenna that allows for the utilization of different imaging modes and can be used in a very flexible manner. With radar instruments various frequency ranges of the radar spectrum can be observed, the so-called bands. TerraSAR-X is operated in the X-band, which is lying at a frequency around 9.65 GHz, corresponding to a wavelength of about 3 centimeters. The technology of the active, phase-con-trolled antenna enables a high flexibility and mission efficiency. While in case of passive systems the whole radar antenna or even the satellite must be rotated in order to align the antenna onto the tar-get area, the active antenna of TerraSAR-X can steer its radar pulses in a certain direction. The antenna is 4.80 meters long and80 centimeters wide. The satellite is designed in a way that it can be installed, together with its antenna at its full size, on the launch vehicle. In this way a complex unfolding mechanism can be avoided. The TerraSAR-X radar can operate in two polarizations, H (horizontal) and V (vertical)and consists of 12 antenna panels, each equipped with 32 slotted waveguide radiators. Each of these waveguides is fitted with a transmit/receive module (TRM), so that the whole antenna consists of 384 TRMs. This allows the control of the radar beam by 0.75° in the flight direction and 20° perpendicular to the flight direction. The data received are stored in a mass storage system with a 256 Gbit capacity before they are transmitted via a 300 Mbit per second X-band system to the ground station. The active antenna enables different imaging methods to be used with very fast switching between them: - In the Spotlight Mode the radar image records an area of 5 to 10 by 10 kilo-meters size. In this manner a maximum resolution of up to one meter is achieved. - In the Stripmap Mode the satellite ima…
change note: 2019-03-18 11:21:46.0 [mmorahan] update Definition (https://www.dlr.de/rd/en/Portaldata/28/Resources/dokumente/RE/Broschuere_TSX_lowres.pdf);
change note: 2019-03-18 11:00:14.0 [mmorahan] insert AltLabel (id: null category: primary text: Synthetic Aperture Radar (SAR) language code: en);
change note: 2019-03-18 11:08:40.0 [mmorahan] insert Definition (id: null text: The official instrument description from the DLR TerraSAR-X brochure: „Primary Payload: the Synthetic Aperture Radar (SAR) The primary payload is a Synthetic Aperture Radar (SAR) with an active antenna that allows for the utilization of different imaging modes and can be used in a very flexible manner. With radar instruments various frequency ranges of the radar spectrum can be observed, the so-called bands. TerraSAR-X is operated in the X-band, which is lying at a frequency around 9.65 GHz, corresponding to a wavelength of about 3 centimeters. The technology of the active, phase-con-trolled antenna enables a high flexibility and mission efficiency. While in case of passive systems the whole radar antenna or even the satellite must be rotated in order to align the antenna onto the tar-get area, the active antenna of TerraSAR-X can steer its radar pulses in a certain direction. The antenna is 4.80 meters long and80 centimeters wide. The satellite is designed in a way that it can be installed, together with its antenna at its full size, on the launch vehicle. In this way a complex unfolding mechanism can be avoided. The TerraSAR-X radar can operate in two polarizations, H (horizontal) and V (vertical)and consists of 12 antenna panels, each equipped with 32 slotted waveguide radiators. Each of these waveguides is fitted with a transmit/receive module (TRM), so that the whole antenna consists of 384 TRMs. This allows the control of the radar beam by 0.75° in the flight direction and 20° perpendicular to the flight direction. The data received are stored in a mass storage system with a 256 Gbit capacity before they are transmitted via a 300 Mbit per second X-band system to the ground station. The active antenna enables different imaging methods to be used with very fast switching between them: - In the Spotlight Mode the radar image records an area of 5 to 10 by 10 kilo-meters size. In this manner a maxim…
change note: 2019-03-18 11:03:09.0 [mmorahan] Rename Concept update PrefLabel (TSX-1);
change note: 2019-03-19 14:54:25.0 [mmorahan] update Definition (Primary Payload: the Synthetic Aperture Radar (SAR) The primary payload is a Synthetic Aperture Radar (SAR) with an active antenna that allows for the utilization of different imaging modes and can be used in a very flexible manner. With radar instruments various frequency ranges of the radar spectrum can be observed, the so-called bands. TerraSAR-X is operated in the X-band, which is lying at a frequency around 9.65 GHz, corresponding to a wavelength of about 3 centimeters. The technology of the active, phase-con-trolled antenna enables a high flexibility and mission efficiency. While in case of passive systems the whole radar antenna or even the satellite must be rotated in order to align the antenna onto the tar-get area, the active antenna of TerraSAR-X can steer its radar pulses in a certain direction. The antenna is 4.80 meters long and80 centimeters wide. The satellite is designed in a way that it can be installed, together with its antenna at its full size, on the launch vehicle. In this way a complex unfolding mechanism can be avoided. The TerraSAR-X radar can operate in two polarizations, H (horizontal) and V (vertical)and consists of 12 antenna panels, each equipped with 32 slotted waveguide radiators. Each of these waveguides is fitted with a transmit/receive module (TRM), so that the whole antenna consists of 384 TRMs. This allows the control of the radar beam by 0.75° in the flight direction and 20° perpendicular to the flight direction. The data received are stored in a mass storage system with a 256 Gbit capacity before they are transmitted via a 300 Mbit per second X-band system to the ground station. The active antenna enables different imaging methods to be used with very fast switching between them: - In the Spotlight Mode the radar image records an area of 5 to 10 by 10 kilo-meters size. In this manner a maximum resolution of up to one meter is achieved. - In the Stripmap Mode the satellite ima…
change note: 2019-03-18 10:51:09.0 [mmorahan] Insert Concept add broader relation (TerraSAR-X [4dc63a97-144f-49f7-8fe2-2202857543f7,368577] - Imaging Radars [824070fa-da29-40fa-ba17-f3d60584bd4d,347803]);
in scheme: instruments
definition: Primary Payload: the Synthetic Aperture Radar (SAR) The primary payload is a Synthetic Aperture Radar (SAR) with an active antenna that allows for the utilization of different imaging modes and can be used in a very flexible manner. With radar instruments various frequency ranges of the radar spectrum can be observed, the so-called bands. TerraSAR-X is operated in the X-band, which is lying at a frequency around 9.65 GHz, corresponding to a wavelength of about 3 centimeters. The technology of the active, phase-con-trolled antenna enables a high flexibility and mission efficiency. While in case of passive systems the whole radar antenna or even the satellite must be rotated in order to align the antenna onto the tar-get area, the active antenna of TerraSAR-X can steer its radar pulses in a certain direction. The antenna is 4.80 meters long and80 centimeters wide. The satellite is designed in a way that it can be installed, together with its antenna at its full size, on the launch vehicle. In this way a complex unfolding mechanism can be avoided. The TerraSAR-X radar can operate in two polarizations, H (horizontal) and V (vertical)and consists of 12 antenna panels, each equipped with 32 slotted waveguide radiators. Each of these waveguides is fitted with a transmit/receive module (TRM), so that the whole antenna consists of 384 TRMs. This allows the control of the radar beam by 0.75° in the flight direction and 20° perpendicular to the flight direction. The data received are stored in a mass storage system with a 256 Gbit capacity before they are transmitted via a 300 Mbit per second X-band system to the ground station. The active antenna enables different imaging methods to be used with very fast switching between them: - In the Spotlight Mode the radar image records an area of 5 to 10 by 10 kilo-meters size. In this manner a maximum resolution of up to one meter is achieved. - In the Stripmap Mode the satellite images a strip of 30 kilometers width and a maximum len…