NOAA系列极轨气象卫星数据格式 - 图文(5)

2019-03-29 13:11

国家卫星气象中心(NSMC) NOAA系列极轨气象卫星数据格式 1 2 3 4 5 6 7~21 22 23 24~25 26~85 86~205 1 1 1 1 1 1 15 1 1 2 2 x 30 4 x 30 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 扫描线号 扫描线的年号(year) 扫描线的年中日期号(day of year) 扫描线的世界时(UTC)时间(time of day;毫秒) Bit位区的质量标记(详见附录A) 扫描线质量标志(详见附录A) AMSU-A通道1-15的质量标志(详见附录A) AMSU-A1的阁板温度(K*100) AMSU-A2的阁板温度(K*100) 备份 地理定位信息 AMSU-A扫描点1-30的纬度和经度(*10^4): (1)纬度(*10^4); (2)经度(*10^4) AMSU-A扫描点1-30的4个角度(度*100): (1)局地天顶角;(2)局地方位角; (3)太阳天顶角;(4)太阳方位角 参考椭圆上的卫星高度(km*10) 备份 地球观测资料 AMSU-A扫描点1-30、通道1-15的亮度温度(K*100) (数据丢失指示标记:-999999) AMSU-A视场1-30的质量控制标志(详见附录A) 备份 206 207~208 209~658 659~688 689~768 1 2 15 x 30 30 80 I*4 I*4 I*4 I*4 I*4 附录:AMSU-A Level 1C数据记录中bit域描述 序号 数据类型 1 I*4 数据描述 质量控制bit域:(if the bit is on (i.e., if it is set to 1) then the statement is true. Otherwise it is false.) bit 31: do not use scan for product generation bit 30: time sequence error detected with this scan (see below) bit 29: data gap precedes this scan bit 28: no calibration (see below) bit 27: no earth location (see below) bit 26: first good time following a clock update bit 25: instrument status changed with this scan bit 24-0: spare 扫描线质量标记:(if bit is on (=1),then true) Time Problem Code (All bits off implies the scan time is as expected.) bit 31-24: spare bit 23: time field is bad but can probably be inferred from the 2 I*4 - 19 -

国家卫星气象中心(NSMC) NOAA系列极轨气象卫星数据格式 previous good time. Bit 22: time field is bad and can't be inferred from the previous good time. bit 21: this record starts a sequence that is inconsistent with previous times (i.e., there is a time discontinuity). This may or may not be associated with a spacecraft clock update. (See bit 26 above) bit 20: start of a sequence that apparently repeats scan times that have been previously accepted. bit 19-16: spare Calibration Problem Code (Note these bits compliment the channel indicators; all bits set to 0 indicates normal calibration. Where any of bits 15, 13,10,9,8 are set, secondary calibration coefficients should have been used.) bit 15: Scan line was not calibrated because of bad time. Bit 14: Scan line was calibrated using fewer than the preferred number of scan lines because of proximity to start or end of data set or to a data gap. Bit 13: Scan line was not calibrated because of bad or insufficient PRT data. Bit 12: Scan line was calibrated but with marginal PRT data. Bit 11: Some uncalibrated channels on this scan. (See channel indicators.) bit 10: Uncalibrated due to instrument mode. Bit 09: Questionable calibration because of antenna position error of space view. Bit 08: Questionable calibration because of antenna position error of blackbody. Earth Location Problem Code (all bits set to 0 implies the earth location was normal) bit 07: Not earth located because of bad time. bit 06: Earth location questionable because of questionable time code. (See time problem flags above.) bit 05: Earth location questionable -- only marginal agreement with reasonableness check. - 20 -

国家卫星气象中心(NSMC) NOAA系列极轨气象卫星数据格式 bit 04: Earth location questionable -- fails reasonableness check. bit 03: Earth location questionable because of antenna position check [rs060794.doc & rs062094.do1] bit 02-0: spare 3 I*4 通道质量标记:(all bits off implies a good calibration) bit 31-6: spare bit 5: No good blackbody counts for scan line bit 4: No good space view counts for scan line bit 3: No good PRTs for this line bit 2: Some bad blackbody view counts for this line bit 1: Some bad space view counts for this line bit 0: Some bad PRT temps on this line 扫描视场质量标记:(all bits off implies acceptable data) bit 31: spare bit 30: set if secondary calibration used bit 29-16: spare bit 15-1: bit n set to 1 if brightness temperature in channel n is unreasonable or has not been calculated due to calibration problems. Bit 0: set if all channels are missing. 4 I*4 3、AMSU-B Level 1C数据格式 AMSU-B L1C数据文件为二进制四字节(I*4)直接文件存取。文件的逻辑记录长度为1152个字(4608字节)。AMSU-B有5个通道,每条扫描线有90个扫描点,每条扫描线数据构成一个数据记录。该文件由1个头记录和N个数据记录组成。具体格式如下: (1)头记录格式 字序号 字数 1 2 3 4 1 1 1 1 数据类型 C*3 C*1 C*3 C*1 I*4 I*4 填充符 原始1B数据生成地点的缩写符号 填充符 1C格式版本号 1C格式版本发布的年号(year) 数据描述 一般信息 数据集生成地点的缩写符号 - 21 -

国家卫星气象中心(NSMC) NOAA系列极轨气象卫星数据格式 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23-37 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3x5 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 1C格式版本发布的年中的日期号(day of year) 本数据集中头记录的记录个数 卫星标志(如:14表明NOAA-14) 探测仪器代号(如:5=HIRS;6=MSU;10=AMSU-A; 11=AMSU-B) 卫星大致高度(km*10) 卫星大致轨道周期(秒) 轨道号(从卫星发射入轨后开始记数) 数据集开始的年份(year) 数据集开始的日期号(day of year) 数据集开始的世界时(UTC)时间(time of day;毫秒) 轨道号(结束) 数据集结束的年份(year) 数据集结束的日期号(day of year) 数据集结束的世界时(UTC)时间(time of day;毫秒) 本数据集中的扫描线数 丢失的扫描线数 AMSU-B天线订正数据版本号(0=未进行订正) 备份 转换系数 AMSU-B通道1-5的3个温度-辐射率转换系数: (1)通道中心波数(*10^6); (2)常数c1(*10^6); (3)常数c2(*10^6)。 备用 38-1152 1115 I*4 (2)数据记录格式 字序号 1 2 3 4 5 6 7~11 12 13~14 15~194 195~554 字数 1 1 1 1 1 1 5 1 2 2 x 90 4 x 90 数据类型 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 I*4 扫描线号 扫描线的年号(year) 扫描线的年中日期号(day of year) 扫描线的世界时(UTC)时间(time of day;毫秒) Bit位区的质量标记(详见附录A) AMSU-B扫描线质量标志(详见附录A) AMSU-B通道16-20的质量标志(详见附录A) AMSU-B通道18~20(mixer)仪器温度(K*100) 备份 地理定位信息 AMSU-B 扫描点1-90的纬度和经度(*10^4): (1)纬度; (2)经度 AMSU-B 扫描点1-90的4个角度(*100): - 22 -

数据描述 扫描线信息 国家卫星气象中心(NSMC) NOAA系列极轨气象卫星数据格式 (1)局地天顶角;(2)局地方位角; (3)太阳天顶角;(4)太阳方位角 555 556-557 1 2 I*4 I*4 I*4 I*4 I*4 参考椭圆上的卫星高度(km*10) 备用 地球观测资料 AMSU-B扫描点1-90,通道16-20的亮度温度(*100K) (数据丢失的指示标记:-999999) AMSU-B 视场1-90的质量控制标志(详见附录A) 备份 558~1007 5 x 90 1008~ 1097 1098~ 1152 90 55 附录: AMSU-B Level 1C数据记录中bit域描述 序号 1 数据 类型 I*4 数据描述 质量控制bit域:(if the bit is on (i.e., if it is set to 1) then the statement is true. Otherwise it is false.) bit 31: do not use scan for product generation bit 30: time sequence error detected with this scan (see below) bit 29: data gap precedes this scan bit 28: no calibration (see below) bit 27: no earth location (see below) bit 26: first good time following a clock update bit 25: instrument status changed with this scan bit 24-0: spare 扫描线质量标记:(if bit is on (=1),then true) Time Problem Code (All bits off implies the scan time is as expected.) bit 31-24: spare bit 23: time field is bad but can probably be inferred from the previous good time. bit 22: time field is bad and can't be inferred from the previous good time. bit 21: this record starts a sequence that is inconsistent with previous times (i.e., there is a time discontinuity). This may or may not be associated with a spacecraft clock update. (See bit 26 above) bit 20: start of a sequence that apparently repeats scan times that have been previously accepted. bit 19-16: spare - 23 -

2 I*4


NOAA系列极轨气象卫星数据格式 - 图文(5).doc 将本文的Word文档下载到电脑 下载失败或者文档不完整,请联系客服人员解决!

下一篇:《现代制造技术》课程标准

相关阅读
本类排行
× 注册会员免费下载(下载后可以自由复制和排版)

马上注册会员

注:下载文档有可能“只有目录或者内容不全”等情况,请下载之前注意辨别,如果您已付费且无法下载或内容有问题,请联系我们协助你处理。
微信: QQ: