When was radarsat 1 built

The spacecraft bus, built by Ball Aerospace, consists of the structure power units, solar arrays, attitude control, propulsion deck, and telemetry, tracking, and command systems.

Over time, the primary and secondary on-board tape recorders have failed, but RADARSAT-1 continues to operate with provision of only direct downlink to various receiving stations. Top of Page Back to Missions. Publish Date:. May 22, Full Name:. Launch Date:. This new mosaic provides a detailed look at ice sheet morphology, rock outcrops, research infrastructure, the coastline, and other features of Antarctica discovery of two new ice streams in East Antarctica.

The resulting map is intended to serve as a benchmark for gauging future changes in the polar ice sheet. From an operational point of view, AMM demonstrated in particular the need for an automated planning capability.

The schedule for AMM consisted of acquisitions swaths over 18 days, taking more than a work-year to develop manually. Other left-looking mode data collected. During AMM, a supplementary Background Mission data acquisition plan was implemented to take advantage of this unique opportunity of imaging geological structures from an exactly opposite radar look direction.

Later, these same regions were revisited with the same standard 4-beam once the satellite was restored to its right-looking nominal mode of operations to complete the exact opposite look database. Fine resolution city coverage. These are considered historical data, which will be useful reference for observing future urban growth or decay. The objective of AMM-1 was to acquire complete coverage of the Antarctic continent. Interferometric SAR calculations required that this area be imaged 6 times during the mission three times in descending orbit mode and three times in ascending orbit modes over three consecutive day repeat cycles.

This amounted to SAR data swaths of Antarctica over 72 days. Six image scenes were taken of each area of the continent three pairs of images, each twenty four days apart ; they were used to produce interferometric data about the movement of the ice and the changes in the coastline over time. New acquisition approach: First, data were acquired so that, where possible, the position of structures on the ice sheet could be compared between the and data sets so as to measure point velocities.

Secondly, and the real challenge of AMM-2, was to acquire interferometric data so as to estimate velocity fields. Unlike AMM-1, where the satellite was rotated to a south-looking mode, this was not possible for interferometric acquisition of AMM CSA applied applied special orbit maintenance to minimize the baseline over the three acquisition cycles.

A model of the mission was built which constructed the 24 days of missions operations repeated three times. There were over imaging activities, and approximately activities in the 24 day schedule overall, including ground station in-view masks, downlinking events, and onboard recorder activities. Raney, A.

Luscombe, E. Langham, S. Hubert, Quebec, Canada. Cote, S. Srivastava, S. Muir, R. Srivastava, R. Parashar, A. Mahmood, D. Showalter, S. Srivastava, P. Le Dantec, R. Cote, P. Le Dantec, T. Lukowski, S. Gray, R. Hawkins, K. Gray, K. Mattar, P. Vachon, R. Bindschadler, K. Jezek, R. Forster, J. Smith, B. Engelhardt, D. Mutz, J. Carande, D. Fatland, K. Jezek, J. Miller, X. The information compiled and edited in this article was provided by Herbert J.

Kramer from his documentation of: "Observation of the Earth and Its Environment: Survey of Missions and Sensors" Springer Verlag as well as many other sources after the publication of the 4th edition in Ahmed, S. Parashar, E. Langham, J. Hubert, Quebec, Canada 13 S.

Terms and Conditions Cookie notice. Agriculture and land cover monitoring. Forestry boreal and tropical. Coastal zones and oceans.

Cartography and land use.