spotvgt产品基本介绍 spotv官网

转载:http://liangshzh0816.blog.163.com/blog/static/3477676200972383052319/?suggestedreading&wumii

VEGETATION传感器于1998 年3 月由SPOT-4 搭载升空,,从1998年4 月开始接收用于全地植被覆盖观测的SP0T VGT数据。VEGETATION 数据主要由瑞典的Kiruna 地面站负责接收,由位于法国Toulouse的图像质量监控中中负责图像质量并提供相关参数(如定标地数),最终由位于比利时的VITO研究所的图像处理与存档中中负责全地VEGETATION 数据存档与用户定单。

太阳同步圆形近极地轨道轨道高度:832公里
轨道倾角:98.721度
轨道周期:101.469分/圈
重复周期:369圈/26天
降交点时间:上午10:30分
扫描带宽度: 60 公里
spotvgt产品基本介绍 spotv官网
两侧侧视:+/-27度 扫描带宽:950公里

spot vgt的几个波段及用途

mainly to perform atmospheric corrections 主要用于大气校正

a red bandcenteredon the absorption peak of the chlorophyll (0.665 ?m),anearinfrared bandcorresponding to themaximumvegetation spectral reflectance and principallyrelated to the structural properties of the canopies and topercentage of soil covered by vegetation,

目前spot VGT数据主要有

vgt d10产品指的是bdc或二向反射合成,这种合成方法是基于二向反射率函数,像元的灰度值为地面反而反射率,海洋地区的反射率设为0,和s10一样有三种合成产品1km 4km和8km

那么mvc和bdc产品有什么区别呢,主要表现在status map 和新增以及去除一些内容

不同产品的数据内容the different planes inthe VEGETATION product

Plane

Description of the plane

File format

Type of product

PHYS_VOL

Physical Volumedescriptor

Information about thedelivery

TXT

P/S/D

LOG

Logical Volume descriptor

Information about
- the product
- map projection information (general information, geodetic systemparameters, projection parameters)
- cartographic location
- geographic location
- image co-ordinates (corresponding to carto and geographiclocation)
- geometric correction
- radiometric correction
- orbit parameters
- date and time
- algorithms references
- production

TXT

P/S/D

RIG

Copyright Descriptor

Information about thecopyright

TXT

P/S/D

BO

B0 spectral band

Radiometry data

HDF

P/S/D

B2

B2 spectral band

Radiometry data

HDF

P/S/D

B3

B3 spectral band

Radiometry data

HDF

P/S/D

MIR

MIR spectral band

Radiometry data

HDF

P/S/D

NDV

Vegetation Global Index

NDVI indices

HDF

S/D

SM

Status Map

Data about
Bit NR 7: Radiometric quality forB0 coded as 0 if bad and 1 if good
Bit NR 6: Radiometric quality forB2 coded as 0 if bad and 1 if good
Bit NR 5: Radiometric quality forB3 coded as 0 if bad and 1 if good
Bit NR 4: Radiometric quality forMIR coded as 0 if bad and 1 if good
Bit NR 3: land code 1 or watercode 0
Bit NR 2: ice/snow code 1 , code 0if there is no ice/snow

HDF

P/S

Bit NR1:

0

0

1

1

Bit NR 0:

0

1

0

1

clear

shadow

uncertain

cloud

BSM

BDC Status Map

Data about

Bit NR 7: BRDF model adjustment quality on B0:coded as 0 if bad quality and 1 if good
Bit NR 6: BRDF model adjustmentquality on B2: coded as 0 if bad quality and 1 ifgood

Bit NR 5: BRDFmodel adjustment quality on B3: coded as 0 if bad quality and 1 ifgood
Bit NR 4: BRDF model adjustmentquality on MIR: coded as 0 if bad quality and 1 if good
Bit NR 3: land/water: coded as 1if land and 0 if sea
Bit NR———— 2: ice/snow: coded as 1 ifthere is ice/snow and 0 if not

Bit NR 1: cloud/shadow or clear: coded as 1 if there iscloud/shadow and 0 if not

Bit NR 0

: qrmir: Radiometric quality for MIR coded as 0 if bad and 1 ifgood

HDF

D

VZA

Viewing zenith angle grid

Data of the satellite zenithangles

HDF

P/S

VAA

Viewing azimuth anglegrid

Data of the satellite azimuthangles

HDF

P/S

SZA

Solar zenith angle grid

Data of the solar zenithangles

HDF

P/S

SAA

Solar azimuth angle grid

Data of the solar azimuthangles

HDF

P/S

WVG

Water Vapour grid

Data of water vapour

HDF

P

OG

Ozone grid

Data of ozone

HDF

P

AG

Tropospheric Aerosol grid

Data of aerosols

HDF

P

1BL

1B HRVIR latitude plane

Data of the HRVIR co-location(latitude)

HDF

P

1BO

1B HRVIR longitude plane

Data of the HRVIR co-location(longitude)

HDF

P

TG

Time grid

Each pixel is expressed with aprecision of one minute referring to the beginning of the firstsegment of the synthesis.

HDF

S

SZN

SZ NORM

This value is the normalized solarzenith angle used in the BDC correction.

HDF

D

TP

TAUP: Optical thickness

This value is the average of theoptical thickness of the selected measures of the BDCperiod.

HDF

D

Kxx

K0, K1, K2 for the the bands B0, B2,B3 and MIR

These values are the coefficients ofthe BDC correction function.

HDF

D

QL

Quick look

Quick look of one spectral band (seeLOG file which spectral band)

TIF

P/S/D

P= VGT-Pproduct
S= VGT-S product
D= VGT-D product
TXT= text
HDF= Hierarchical Data Format
TIF= TIFF Format

Real NDVI =coefficient a * Digital Number + coefficient b

= a * DN +b

Coefficient a =0.004Coefficient b = -0.1

Real reflectance value VGT
=coefficient a * Digital Number + coefficient b

= a * DN +b

Coefficient a = 0.0005Coefficient b = 0.0

  

爱华网本文地址 » http://www.413yy.cn/a/25101015/272535.html

更多阅读

红米手机怎么预定 苹果官网怎么预定手机

红米手机怎么预定——简介在经过8月12号和8月20号的二轮红米手机抢购,如果你还未成功抢购到红米手机的话,请不要放弃。在8月27号12点小米还会继续开放购买。这里简单介绍如何在小米官网预约红米手机的方法。红米手机怎么预定——工具

小米官网怎么抢手机 怎样在小米商城抢手机

小米官网怎么抢手机——简介小米手机饥饿营销方式让购买小米手机成为一大难事,不管官方发售多少台,也都将被瞬间秒杀。下面介绍一些方法希望能够帮助你更好的抢到小米手机,不管你是否是米粉,也不管你抢购了多少次。小米官网怎么抢手机

建行信用卡积分怎么兑换 建行积分兑换商城官网

建行信用卡积分怎么兑换——简介信用卡累计积分是很多信用卡用户的福利,怎么兑换却是个问题,下面介绍一下建行信用卡积分兑换方法。建行信用卡积分怎么兑换——方法/步骤建行信用卡积分怎么兑换 1、首先,登录建行官网,点击信用卡进入信

腾讯官网生成qq在线客服代码 qq客服悬浮代码生成器

腾讯官网生成qq在线客服代码——简介很多朋友在网上找qq客服的代码,其实qq官网给我们提供了生成在线客服代码的地方,使用起来也非常方便和安全,这里小编就向大家介绍一下。腾讯官网生成qq在线客服代码——方法/步骤腾讯官网生成qq在线

怎么在苹果官网购买正品手机 在官网买手机几天能到

怎么在苹果官网购买正品手机——简介在这里我给大家介绍一下怎么在苹果官网上面购买正品的苹果手机!!现在在中国大陆!!只有北京,成都,上海,重庆,才有苹果的授权经营店!!其它各城市的零售店都不是正规的!!这个可以再官网查到的!!所以不是正规的零售

声明:《spotvgt产品基本介绍 spotv官网》为网友熱抚在窄巷分享!如侵犯到您的合法权益请联系我们删除