遙感導(dǎo)論4-1.

1、Characteristic *1 : The data reception by NASDA was finished to Jun 30, 2001.*2 : The data reception by NASDA was finished to Nov 30, 2002. Characteristic Sun Synchronous Orbit of Landsat 7 Sun Elevation Angle Satellites and obits 86 87 88 89 90 91 92 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 0

2、8 09 SPOT 5 SPOT 4 衛(wèi)星運行服務(wù)中斷發(fā)射日或重新開始服務(wù)日 SPOT 1 SPOT 2SPOT 3 Overview The French earth observation satellites SPOT-1, 2, 3 and 4 were launched into a sun-synchronous sub-recurrent orbit at an altitude of about 822 km in 1986, 1990, 1993 and 1998 respectively. SPOT can observe not only the earths surfa

3、ce just underneath the satellite but also slantwise to the satellites path by changing the scan direction of the sensors. It can shorten the time period for observing a specified area repetitively. SPOT-1, -2 and -3 are equipped with CCD sensors called High Resolution Visible Imaging System (HRV). S

4、POT-4 is equipped with two CCD sensors, HRVs successor, High Resolution Visible and Infrared (HRVIR) and Vegetation (VGT)*1. The observation bands of HRVIR are basically same as HRV and the newly added band 4, short wave infrared (SWIR: 1.58 to 1.75mm). VGT observes wide area with a swath of 2,250 k

5、m. Spot Spot 立體像對立體像對 軌道旁向傾斜，像對最短時間差為0.5小時自動相關(guān)生成DEM，高程精度為7-11米 (VirtuoZo) SPOTSPOT的傾斜觀測功能的傾斜觀測功能重復(fù)觀測能力單星：重復(fù)觀測能力單星：23天天/次，多星：次，多星：1天天/次次2020600 Km maxiHRS120 KmSpot-5Spot-5基本產(chǎn)品基本產(chǎn)品10米多光譜米多光譜5米全色米全色2.5米全色米全色+Spot-5Spot-5增值產(chǎn)品增值產(chǎn)品 10米多光譜米多光譜5米米PanSpot 5 HRS立體像立體像對生成的對生成的10米高程精度米高程精度DEM軌道軌道: 680km, 太陽同步太

6、陽同步, 98.2 傾斜傾斜紅波段紅波段 .63-.69 microns (4m)近紅外近紅外 .76-.90 microns (4m)藍(lán)波段藍(lán)波段 .45-.52 microns (4m)綠波段綠波段 .52-.60 microns (4m)Overview of IKONOSSince its launch in September 1999, Space Imagings IKONOS earth imaging satellite has provided a reliable stream of image data that has become the standard for

7、commercial high-resolution satellite data products. The IKONOS satellite is the worlds first commercial satellite to collect black-and-white images with 1-meter resolution and multispectral imagery with 4-meter resolution. Sensor CharacteristicsThe IKONOS satellite weighs about 1600 pounds. It orbit

8、s the Earth every 98 minutes at an altitude of approximately 680 kilometers or 423 miles. IKONOS was launched into a sun-synchronous orbit, passing a given longitude at about the same local time (10:30 A.M.) daily. IKONOS can produce 1-meter imagery of the same geography every 3 days. Spectral Range

9、1-meter black-and-white (panchromatic)0.45 - 0.90 mm. 4-meter multispectral Blue: 0.45 - 0.52 mmGreen: 0.51 - 0.60 mmRed: 0.63 - 0.70mmNear IR: 0.76 - 0.85 mmThis one-meter resolution satellite image of Manhattan, New York was collected at 11:43 a.m. EDT on Sept. 12, 2001 by Space Imagings IKONOS sa

10、tellite. The image shows an area of white dust and smoke at the location where the 1,350-foot towers of the World Trade Center once stood. Since all aircraft were grounded following the attack on America its the only high-resolution view from above of the fire and destruction of the twin towersThis

11、one-meter resolution, color satellite image of the Lingshui military airfield on the southeastern coast of Hainan Island in the South China Sea, was collected at 10:32 a.m. local time on April 10, 2001 by Space Imagings IKONOS satellite. A US Navy plane made an emergency landing there after a mid-ai

12、r collision with a Chinese fighter. The navy aircraft is clearly visible and parked on the taxiway adjacent to the north end of the runway (north is up). 特點：采用高分辨率成像光譜儀，波段數(shù)為特點：采用高分辨率成像光譜儀，波段數(shù)為36-256個，光譜分辨率個，光譜分辨率5-10nm,地面分辨率地面分辨率30-1000m。n1978年發(fā)射；近極地太陽同步軌道；掃描覆蓋海洋的寬度1900km；五種傳感器，以微波為主。n獲取大陸架淺海的海洋數(shù)據(jù)。n主要用于海洋學(xué)、海冰學(xué)、海洋污染監(jiān)測等領(lǐng)域。n加、美、德、英共同設(shè)計，1995年發(fā)射。Using a rotating scanning mirror, the VTIR mechanically scans from right to left at a right angle to the satellites flight direction. Multispectral Electronic Self-Scanning Radiometer(