PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
                                                                              
                                                                              
OBJECT                = TEXT                                                  
  INTERCHANGE_FORMAT    = ASCII                                               
  PUBLICATION_DATE      =  2008-07-29                                         
                                                                              
  NOTE                  = "BROWSE directory content"                          
                                                                              
END_OBJECT            = TEXT                                                  
                                                                              
END                                                                           
The BROWSE directory contains Quick Look Browse Plots of the data. The plots  
are available as jpeg (*.JPG) files. There may also be postscript versions of 
the plots (*.AUX). The plots are accompanied by a single label file of the    
same file name but with extension *.LBL.                                      
                                                                              
The files contain either quick look views after early processing of raw data  
(RSR i.e. Radio Science Receiver data) or quick look plots of calibrated level
 2 data (IFMS). These may be useful in identifying data which deserve more    
detailed inspection. Certain data anomalies can be readily seen in the plots. 
More details are given in the label file (*.LBL) of each plot.                
                                                                              
JPEG files contain several figures generated from level 2 Doppler data after  
processing and calibration. These may be useful in identifying data which     
deserve more detailed inspection. For example, by looking at the JPEG file,   
the user can determine whether a signal was easily detectable or whether the  
data were corrupted. Certain data anomalies can be readily seen in the plots. 
                                                                              
AGC that is the Auto Gain Control [dB] corresponds to 'SIGNAL LEVEL' in the   
LBL file accompanying the level 2 data. Also calibration [Hz] corresponds to  
'CORRECTION OF EARTH ATMOSPHERE PROPAGATION'. Residuals [Hz] correspond to    
'RESIDUAL CALIBRATED S or X-BAND FREQUENCY SHIFT'. Differential doppler [Hz]  
is computed by F_s - (3/11)*F_x, where F_s and F_x are the received signal    
frequencies at S- and X-bands, respectively. The differential doppler is not  
computed in case of a sampling frequency less than 1 per second. The plots of 
the frequency residuals and differential doppler are divided into three plots 
with shorter consecutive time periods.                                        
                                                                              
The panels are arranged in the following way and can be easily identified     
by the title on top of it. The plots were generated using gnuplot. Thus       
the numbers in the upper right corner in each plot thus not give a ratio      
but the number of columns plotted against each other. I.e. using 1:2 means    
that the first column of the plotting data set was plotted against the        
second column.                                                                
                                                                              
However this plotting data set is a subset of the complete data set given     
in the corresponding level 2 data file. The raw data set contains not all     
columns of the level 2 data. For example not all time columns were used       
since only time in UTC was needed. In the filtered plots some data points that
were identified as cycle slips were removed. To see which columns of the      
level 2 data was used for plotting compare the description given below        
with the corresponding lebel 2 data label file.                               
                                                                              
Plot 1:     Auto Gain Control in dBm vs UTC time (hours of the DOY of         
            measurement)                                                      
            Sometimes no Auto Gain Control (AGC)-files are available.         
            In that case no AGC is plotted.                                   
Plot 2:     Calibration in Hz vs UTC time (hours of the DOY of                
            measurement)                                                      
Plot 3:     Complete Residual of observed and predicted Doppler shift [Hz]    
            vs UTC time (hours of the DOY of measurement). If the predicted   
            frequency (Column 10 in level 2 file) is not given a residual     
            calibrated frequency shift is not computed and the plot is        
            therefore missing in the panel.                                   
Plot 4:     Complete Differential Doppler [Hz] vs UTC time                    
            (only available if both X- and S-Band was recorded at a sampling  
            frequency higher than 0.1 Hz) (hours of the DOY of measurement).  
Plots 5-7:  The complete residual (above) was subdivided into three plots     
            in order to better identify smaller fluctuations which would      
            otherwise not be seen in the complete plot. Plots which contain   
            'filtered' data are cleared from cycle-slips.                     
Plots 8-10: The complete differential Doppler (above) was subdivided into     
            three plots in order to better identify smaller fluctuations      
            which would otherwise not be seen in the complete plot.           
            Plots with extension 'filtered' are cleared from cycle-slips      
            using scripts.                                                    
Icon  Name                                     Last modified      Size  Description
[DIR] Parent Directory - [TXT] browinfo.txt 18-Mar-2019 05:48 6.1K [IMG] r84icl1l02_b1x_161162332_00.jpg 03-Dec-2018 09:34 157K [   ] r84icl1l02_b1x_161162332_00.lbl 18-Mar-2019 05:49 6.8K [PDS label] [IMG] r84icl1l02_b2x_161162332_00.jpg 03-Dec-2018 09:34 159K [   ] r84icl1l02_b2x_161162332_00.lbl 18-Mar-2019 05:49 6.8K [PDS label] [IMG] r84icl2l02_b1x_161162332_00.jpg 03-Dec-2018 09:34 159K [   ] r84icl2l02_b1x_161162332_00.lbl 18-Mar-2019 05:49 6.8K [PDS label] [IMG] r84icl2l02_b2x_161162332_00.jpg 03-Dec-2018 09:34 166K [   ] r84icl2l02_b2x_161162332_00.lbl 18-Mar-2019 05:49 6.8K [PDS label] [IMG] r84icl3l02_b1x_161162332_00.jpg 03-Dec-2018 09:34 122K [   ] r84icl3l02_b1x_161162332_00.lbl 18-Mar-2019 05:49 6.8K [PDS label] [IMG] r84icl3l02_b2x_161162332_00.jpg 03-Dec-2018 09:34 152K [   ] r84icl3l02_b2x_161162332_00.lbl 18-Mar-2019 05:49 6.8K [PDS label]
Apache/2.2.15 (Scientific Linux) Server at pdssbn.astro.umd.edu Port 443