RADARSAT-1

The Canadian Space Agency’s (CSA) Remote Sensing satellite (RADARSAT-1) was launched in November 1995, and stopped transmitting because of a technical anomaly in March 2013. It was equipped with synthetic aperture radar (SAR), a powerful microwave instrument. It transmitted and received signals to capture high-quality images of the Earth night and day and in all weather conditions. RADARSAT-1 transmitted a microwave energy pulse (C-band at 5.3 GHz frequency) to Earth, and the SAR measured the amount of energy reflected back to the satellite from the Earth’s surface. The RADARSAT-1 data archive via the ASF DAAC is now free and open. This is an unrestricted dataset, and users are free to copy, modify, publish, translate, adapt, distribute or otherwise use the RADARSAT-1 information in any medium, mode or format for any lawful purpose. Learn more about the Canada’s Open Government License. RADARSAT-1 collected Synthetic Aperture Radar (SAR) data from 1995-2008. The instrument had worldwide coverage, with extensive coverage of Arctic Ocean sea ice. The datapool contains ASF standard beam odd frames, as well as the first and last frame of each imaged swath. The datapool also contains all Fine Beam 1 frames in a CEOS — Level 0 and Level 1 framed format. OverviewDataset PropertyFine Beam ModeStandard Beam ModeScanSAR Beam ModeTemporal Coverage1995-20081995-20081995-2008Repeat Cycle24 days24 days24 daysSpatial CoverageWorldwide coverage, with extensive coverage of Arctic Ocean sea iceWorldwide coverage, with extensive coverage of Arctic Ocean sea iceWorldwide coverage, with extensive coverage of Arctic Ocean sea iceCenter Frequency5.3 GHz/C-band 5.6 cm5.3 GHz/C-band 5.6 cm5.3 GHz/C-band 5.6 cmPolarizationHHHHHHSpatial Resolution8 m30 m50-100 mSwath Width50 km100 km300-500 kmOff-Nadir Angle37-47°20-49°20-49°File FormatCEOS — Level 0 and Level 1 framedCEOS — Level 0 and Level 1 framedCEOS — Level 0 and Level 1 framedDate Published199519951995Downloadable Products Downloadable Products include Level 0  (raw data), Level 1  (amplitude image), Left-looking and Antarctica mosaics.* NOTE: Exact swath varies with incidence angle and the latitude of the image footprint. Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)StandardS124-3124 x 27100StandardS230-3720 x 27100StandardS334-4025 x 27100StandardS436-4223 x 27100StandardS541-4622 x 27100StandardS645-4920 x 27100StandardS739-4219 x 27100Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)FineF137-418.3 x 8.450FineF239-427.9 x 8.450FineF341-447.6 x 8.450FineF443-467.3 x 8.450FineF545-477.1 x 8.450Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)WideW120-3133 x 27150WideW231-3935 x 27150WideW339-4521 x 27150Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)Extended LowEL-110-2339 x 27170Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)Extended HighEH149-5218 x 2775Extended HighEH250-5318 x 2775Extended HighEH352-5517 x 2775Extended HighEH454-5717 x 2775Extended HighEH556-5816 x 2775Extended HighEH657-6016 x 2775Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)Scan SAR NarrowSNA20-3950 x 50300Scan SAR NarrowSNB31-4650 x 50300Beam ModeBeam PositionIncidence Angle (degrees)Resolution Range x Azimuth (m)Real Time swath* (km)Scan SAR WideSWA20-49100 x 100500Scan SAR WideSWB20-46100 x 100450 * NOTE: Exact swath varies with incidence angle and the latitude of the image footprint.

加拿大航天局（CSA）的遥感卫星（RADARSAT-1）于1995年11月发射升空，由于技术故障于2013年3月停止传输。该卫星配备了合成孔径雷达（SAR），一种强大的微波仪器。它通过发送和接收信号以捕捉地球昼夜以及各种天气条件下的高质量图像。RADARSAT-1向地球发射微波能量脉冲（5.3 GHz频率的C波段），SAR测量从地球表面反射回卫星的能量量。通过美国航天局数据档案中心（ASF DAAC）的RADARSAT-1数据档案现已免费开放。这是一个无限制的数据集，用户可自由复制、修改、发布、翻译、改编、分发或以任何介质、方式或格式用于任何合法目的。欲了解更多关于加拿大开放政府许可的信息。RADARSAT-1于1995年至2008年收集了合成孔径雷达（SAR）数据。该仪器具有全球覆盖范围，对北极海洋海冰覆盖广泛。数据池包含美国航天局标准波束奇数帧，以及每个成像带的第一个和最后一个帧。数据池还包含所有细波束1帧，采用CEOS — 第0级和第1级帧格式。数据集概述如下：

Dataset Property
Fine Beam Mode
Standard Beam Mode
ScanSAR Beam Mode
Temporal Coverage
1995-2008
1995-2008
1995-2008
Repeat Cycle
24 days
24 days
24 days
Spatial Coverage
Worldwide coverage, with extensive coverage of Arctic Ocean sea ice
Worldwide coverage, with extensive coverage of Arctic Ocean sea ice
Worldwide coverage, with extensive coverage of Arctic Ocean sea ice
Center Frequency
5.3 GHz/C-band 5.6 cm
5.3 GHz/C-band 5.6 cm
5.3 GHz/C-band 5.6 cm
Polarization
HHHHHH
HHHHH
HHHHH
Spatial Resolution
8 m
30 m
50-100 m
Swath Width
50 km
100 km
300-500 km
Off-Nadir Angle
37-47°
20-49°
20-49°
File Format
CEOS — Level 0 and Level 1 framed
CEOS — Level 0 and Level 1 framed
CEOS — Level 0 and Level 1 framed
Date Published
1995
1995
1995
Downloadable Products
Downloadable Products include Level 0 (raw data), Level 1 (amplitude image), Left-looking and Antarctica mosaics.
* NOTE: Exact swath varies with incidence angle and the latitude of the image footprint.

Beam Mode
Beam Position
Incidence Angle (degrees)
Resolution Range x Azimuth (m)
Real Time swath* (km)
Standard
S1
24-31
124 x 27
100
Standard
S2
30-37
20 x 27
100
Standard
S3
34-40
25 x 27
100
Standard
S4
36-42
23 x 27
100
Standard
S5
41-46
22 x 27
100
Standard
S6
45-49
20 x 27
100
Standard
S7
39-42
19 x 27
100
Fine
F1
37-41
8.3 x 8.45
50
Fine
F2
39-42
7.9 x 8.45
50
Fine
F3
41-47
7.6 x 8.45
50
Fine
F4
43-47
7.3 x 8.45
50
Fine
F5
45-47
7.1 x 8.45
50
Wide
W1
20-31
33 x 27
150
Wide
W2
31-39
35 x 27
150
Wide
W3
39-45
21 x 27
150
Extended Low
EL-1
10-23
39 x 27
170
Extended High
EH-1
49-52
18 x 27
75
Extended High
EH-2
50-53
18 x 27
75
Extended High
EH-3
52-55
17 x 27
75
Extended High
EH-4
54-57
17 x 27
75
Extended High
EH-5
56-58
16 x 27
75
Extended High
EH-6
57-60
16 x 27
75
Scan SAR Narrow
SNA
20-39
50 x 50
300
Scan SAR Narrow
SNB
31-46
50 x 50
300
Scan SAR Wide
SWA
20-49
100 x 100
500
Scan SAR Wide
SWB
20-46
100 x 100
450

* NOTE: Exact swath varies with incidence angle and the latitude of the image footprint.