%?extract_data.m
%?--------------
%?This?program?extracts?the?raw?signal?data?from?the?CD?included?in?the?
%?Cumming/Wong?book.??The?data?on?CD?are?in?CEOS?format.??
%?It?is?assumed?that?the?run?parameters?are?stored?in?CD_run_params.mat?
%?in?the?current?directory.
%?Run?“specify_run_parameters.m“?first?to?create?this?file.
%?-------------------------------------------------------------------------
%?Created?:???Nov?01?2004??by?Kaan?Ersahin
%?Modified:???Nov?22?2004??by?Kaan?Ersahin
%?Modified:???Dec?3??2004??by?Ian?Cumming
%??????????????-?changed?function?to?m-file
%??????????????-?fixed?the?parameter?file?name
%??????????????-?added?more?radar?parameters
%?-------------------------------------------------------------------------

clear???home???format?compact

%??Load?the?input?parameters?from?a?matlab?data?file?
load?CD_run_params

disp?‘?‘
disp?‘------------------------------------------------‘
disp?‘?UBC?RRSG?-?CEOS?Reader?for?RADARSAT-1?RAW?DATA‘
disp?‘------------------------------------------------‘
disp?‘?‘

%?-------------------------------------------------------------------------
%?Quantize?the?range?line?limits?and?block?size?if?necessary
%?-------------------------------------------------------------------------

%?Move?the?first?range?line?to?the?beginning?of?an?8-line?block?
first_rg_line?=?8?*?（?ceil（first_rg_line?/?8）?-?1?）?+?1;

%?Make?‘Nrg_lines_blk‘?a?multiple?of?8?to?get?complete?the?8-line?blocks
Nrg_lines_blk?=?8?*?ceil（Nrg_lines_blk?/?8）;?

%?Find?the?number?of?complete?blocks?required?to?cover?the?area?of?interest
Nblocks?=?ceil（Nrg_lines?/?Nrg_lines_blk）;

%?Make?‘Nrg_lines‘?a?multiple?of?‘Nblocks‘?to?get?complete?blocks
Nrg_lines?=?Nrg_lines_blk?*?Nblocks;?

%?=========================================================================
%?These?values?are?specific?to?the?data?set?DO?NOT?CHANGE?for?this?CD
%?=========================================================================

length_replica??=??2880;?????????%?Total?length?（I&Q）?of?replica?record
tot_Nrg_cells???=??9288;?????????%?Total?number?of?range?cells?per?line
tot_Nrg_lines???=?19432;?????????%?Total?number?of?range?lines?（records）
first_replica???=?????7;?????????%?First?record?that?contains?the?replica?
PRF?????????????=?1256.98;???????%?Pulse?Reputation?Frequency?（Hz）
Fr??????????????=?32.317e+6;?????%?Radar?sampling?rate?（Hz）
f0??????????????=?5.300e+9;??????%?Radar?center?frequency?（Hz）
c???????????????=?2.9979e+8;?????%?Speed?of?light?（m/s）
R0??????????????=?0.0065956*c/2;?%?Slant?range?of?first?radar?sample?（m）
Nrepl???????????=?1349;??????????%?No.?of?valid?samples?in?the?replica
Kr??????????????=?0.72135e+12;???%?FM?rate?of?radar?pulse?（Hz/s）
Tr??????????????=?41.75e-6;??????%?Chirp?duration?（s）

%?-------------------------------------------------------------------------
%?Save?parameters?in?a?MAT?file?that?can?be?used?by?subsequent?programs

if?SaveV6
????save?-v6?CD_run_params

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1272??2017-03-23?20:14??CSA\csa.p

?????文件???????5231??2016-09-30?13:41??CSA\extract_data.m

?????文件???????1725??2017-03-23?20:13??CSA\main.m

?????文件???????1344??2017-03-23?19:27??CSA\rda2.p

?????文件????????101??2017-03-23?19:32??CSA\readme.txt

?????文件???????7064??2005-01-21?12:56??CSA\read_CEOS_raw.m

?????文件???????5554??2016-10-17?19:56??CSA\specify_parameters.m

?????目錄??????????0??2017-03-23?19:29??CSA\scene01

?????目錄??????????0??2017-03-23?20:15??CSA

-----------?---------??----------?-----??----

????????????????22291????????????????????9