guozhangwhu edu cn zgsasmac cn 2 p m

星载传感器国内外发展现状 张 过 guozhang@whu. edu. cn zg@sasmac. cn

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(一)国外现状 p 国外主要光学测绘卫星 卫星 拥有者 发射 传感器 类型 通道 分辨率 （m） 重访 天 幅宽 km 应用领域 全 1 1 2. 9 11 测图 多 4 4 1. 6 全 1 1 多 4 4 全 1 0. 61 多 4 2. 44 全 1 0. 46 美国 IKONOS-2 1999 IKONOS 2 2003 Orb. View-3 Geo. Eye Orb. View-3 美国 Geo. Eye Quick. Bird-2 美国 Digital Globe World. View 2 美国 Digital Globe 2008 美国 Geo. Eye 2008 Geo. Eye-1 Pleiades HR -1 A 1 B 2001 2010 法国 2011 Quick. Bird 2 World. View-2 多 8 1. 84 全 1 0. 41 多 CCD 7 4 1. 65 全 1 0. 7 多 4 2. 8 3 资源 环境 8 测图、资 源环境 测图 <6 16. 5 1. 1 /3. 7 16. 4 测图、海 洋、考古 3 15. 2 测图、资 源环境等 13 双星 20 资源环境 测图、 资源环境

北京SPOT 5 融合影像 2. 5 m. Pan+10 m. MS 9

World. View-1/2 n Highest resolution available commercially • 46 cm panchromatic at nadir • 52 cm out to 20° off-nadir n The most spectral diversity commercially available • 184 cm resolution at nadir • 4 standard colors: red, blue, green, near-IR • 4 additional colors: red edge, coastal, yellow, near-IR 2 n High geolocation accuracy • Ultra-stable platform, high-precision attitude sensors and GPS • Specification of 6. 5 m CE 90, with predicted performance in the range of 4. 6 to 10. 7 meters (15 to 35 feet) CE 90, excluding terrain and off-nadir effects • With registration to GCPs in image : 2. 0 meters (6. 6 feet) 15

World. View-1/2 n World-class telescope • High contrast (MTF) and signal to noise ratio • Selectable Time Delay Integration (TDI) levels, both panchromatic and mutlispectral bands • 11 -bit dynamic range n ORBIT • Altitude: 770 kilometers • Type: Sun synchronous, 10: 30 am descending node • Period: 100 minutes n Swath Width • 16. 4 kilometers at nadir 16

Worldview-1 0. 5米全色影像 17

World. View-1/2 All collections < 45 degrees off-nadir 18 4/12/10

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Geo. Eye n Spatial Resolution • Panchromatic Sensor 0. 41 meters x 0. 41 meters • Multispectral Sensor 1. 65 meters x 1. 65 meters n Spectral Range 450– 800 nm • • n n n 450– 510 nm (blue) 510– 580 nm (green) 655– 690 nm (red) 780– 920 nm (near IR) Swath Width 15. 2 km Dynamic Range 11 bits per pixel 无控制点定位精度 • 立体 CE 90: 4 m；LE 90： 6 m • 单片 CE 90： 5 m 40

SPOT 6 43

Pléiades 45

KOMPSAT 3 KOMPSAT-2、KOMPSAT-3影像对比 47 47

World. View-3 Launch Date Orbit August 13, 2014 Altitude: 617 km Type: Sun. Sync, 1: 30 pm descending Node Period: 97 min. Life Spec Mission Life; 7. 25 years Estimated Service Life: 10 to 12 years Spacecraft Size, Mass and Size: 5. 7 m (18. 7 feet) tall x 2. 5 m (8 feet) across, 7. 1 m (23 feet) across the deployed solar Power arrays Mass: 2800 kilograms (6200 pounds) Power: 3. 1 k. W solar array, 100 Ahr battery Sensor Bands Panchromatic: 450 -800 nm 8 Multispectral: (red, red edge, coastal, blue, green, yellow, near-IR 1 and near-IR 2) 400 nm - 1040 nm 8 SWIR: 1195 nm - 2365 nm 12 CAVIS Bands: (desert clouds, aerosol-1, aerosol-2, aerosol-3, green, water-1, water- 2, water-3, NDVI-SWIR, cirrus, snow) 405 nm - 2245 nm Sensor Resolution ( or GSD, Panchromatic Nadir: 0. 31 m GSD at Nadir 0. 34 m at 20° Off-Nadir Ground Sample Distance; off- Multispectral Nadir: 1. 24 m at Nadir, 1. 38 m at 20° Off-Nadir nadir is geometric mean) SWIR Nadir: 3. 70 m at Nadir, 4. 10 m at 20° Off-Nadir CAVIS Nadir: 30. 00 m Dynamic Range 11 -bits per pixel Pan and MS; 14 -bits per pixel SWIR Swath Width At nadir: 13. 1 km Attitude Determination and Type: 3 -axis stabilized Control Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, precision, IRU, GPS 48

World. View-3 Pointing Accuracy and Knowledge Accuracy: <500 m at image start and stop Knowledge: Supports geolocation accuracy below Retargeting Agility Time to slew 200 km: 12 seconds Onboard Storage 2199 Gb solid state with EDAC Communications Image & Ancillary: 800 & 1200 Mbps X-band Housekeeping: 4, 16, 32 or 64 kbps real-time, 524 kbps stored, X-band Command: 2 0 r 64 kbps S-band Max Contiguous Area Collected in a Single Pass (30° off-nadir Mono: 66. 5 km x 112 km (5 strips) angle) Stereo: 26. 6 km x 112 km (2 pairs) Revisit Frequency(at 40°N Latitude) 1 m GSD: <1. 0 day 4. 5 days at 20° off-nadir or less Geolocation Accuracy(CE 90) Predicted Performance: <3. 5 m CE 90 without ground control Capacity 680, 000 km 2 per day 49

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