1999JM8.209.log

H = 15 ==> diameter = 3.1 km; assume period = 12 days (!), equatorial view, radar albedo
= 0.1.  Assume optimal parameters for Goldstone and Tsys = 31 K, sensitivity = 7.3 K/Jy
for Arecibo.  Tracks in bold are those scheduled for observations, where the times
shown and SNR/date correspond to the actual tracks.

                           ------------GOLDSTONE----------  -------------ARECIBO-----------
                                            Max                              Max
                                    Dat     Run    UTC               Dat     Run    UTC
    Date   RA  Decl Delta  Runs     SNR     SNR   Window    Runs     SNR     SNR   Window
1999  7 18 190  58  0.105   190    1400     100 19:55-07:15    0       0       0      -
1999  7 20 183  61  0.094    23     720     160 02:30-03:40    0       0       0      -
1999  7 21 178  62  0.088    22     860     180 17:40-18:45    0       0       0      -
1999  7 23 164  65  0.078    27    1600     290 00:30-01:40    0       0       0      -
1999  7 24 154  65  0.073    82    3300     350 16:55-20:15    0       0       0      -
1999  7 27 119  62  0.062    41    4100     640 01:30-02:55    0       0       0      -
1999  7 28 108  59  0.059    56    5500     730 17:10-19:00    0       0       0      -
1999  7 31  86  43  0.057    92    8100     850 17:00-19:55    0       0       0      -
1999  8  1  80  37  0.058   132    9400     810 11:45-16:00   53   47000    6400 12:17-14:00
1999  8  2  76  32  0.060   327   12000     720 10:30-21:53   72   71000    8400 11:35-14:00
1999  8  3  73  26  0.062   302   10000     620 10:24-21:23   82   66000    7200 11:09-13:59
1999  8  4  71  21  0.066   277    7900     520 10:24-20:53   65   48000    6000 11:00-13:44
1999  8  5  68  16  0.069   254    6200     420 10:24-20:30   65   41000    5000 11:00-13:29

Goldstone Track Assignments

                        UTC              PDT
UTC        UTC    TRANSMIT WINDOW  TRANSMIT WINDOW
1999      1999       START STOP               START STOP
DOY       Date       hhmm-hhmm                hhmm-hhmm     DURATION

199       Jul 18     1955-0715    Sun Jul 18  1255-0015      11:20
201       Jul 20     0230-0340    Mon Jul 19  1930-2040       1:10
202       Jul 21     1740-1845    Wed Jul 21  1040-1145       1:05
204       Jul 23     0030-0140    Thu Jul 22  1730-1840       1:10
205       Jul 24     1655-2015    Sat Jul 24  0955-1315       3:20
208       Jul 27     0130-0255    Mon Jul 26  1830-1955       1:25
209       Jul 28     1710-1900    Wed Jul 28  1010-1200       1:50 **
212       Jul 31     1700-1955    Sat Jul 31  1000-1255       2:55 **
213       Aug  1     1145-1600    Sun Aug  1  0445-0900       4:05 ** 

** = Tracks that have DSS-13 support

Total duration: 28:20

Arecibo Track Assignments


                        UTC              PDT              AST
UTC        UTC    TRANSMIT WINDOW  TRANSMIT WINDOW  TRANSMIT WINDOW
1999      1999       START STOP       START STOP       START STOP
DOY       Date       hhmm-hhmm        hhmm-hhmm        hhmm-hhmm      Duration

213       Aug 1      1217-1400        0517-0700        0817-1000        1:43
214       Aug 2      1135-1400        0435-0700        0735-1000        2:25
215       Aug 3      1109-1359        0409-0659        0709-0959        2:50
216       Aug 4      1100-1344        0400-0634        0700-0944        2:44
217       Aug 5      1100-1329        0400-0629        0700-0929        2:29

During the track on DOY 209 (!), the strategy will be to get a
CW detection and then we'll devote the rest of the track to
0.25 us x 0.05 Hz imaging.  

CW setup for the sixth track:

TX polarization           RCP
RCV polarization          LCP
Frequencies:              2
Dwell:                    20 seconds
Bandwidth:                1000 Hz
Sampling interval:        10000 x 0.1 usec
VMT FFT for PSD files:    4096 for 0.244-Hz resolution


Possible ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec single sample

baud            10 usec
code            127
gates           127
FFT             64
CLT             11
ncoh            2
bandwidth       394 Hz   
resolution      6.15 Hz
TXOFF           TBD
incoh sums      64 => 10.4 sec/record
---------------------------------------------------------------------------
127 x 64 11-usec single sample.

baud            11 usec
code            127
gates           127
PRP             1397
FFT             64
CLT             11
ncoh            2
bandwidth       357.9 Hz   
resolution      5.59 Hz
TXOFF           TBD
-------------------------------------------------------------------------
0.125-usec ranging

setup           JX1XS001  
baud            0.125 usec
code            127
gates           127
FFT             64
ncoh            1968
bandwidth       32.008 Hz     
resolution      0.5001 Hz
TXOFF           6 Hz = 12 cells, => cell 44
incoh sums      4 looks=> 8 sec/record => expect records per run ~ RTT/8
CLT gate        34.8

_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n) 
   These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
   Currently configured for 5-sec records.
_______________________________________________________________________
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
_______________________________________________________________________
 
JX1XS110  11.000 1650    1397.0      715.8  11.2      2   358     5.6

JX1XS070   7.000 1050     889.0     1124.9  17.6      3   375     5.9
                                                      
JX1XS020   2.000  300     254.0     3937.0  61.5     12   328     5.1
                                                      4   984    15.4 

JX1XS010   1.000  150     127.0     7874.0 123.0     41   192     3.0 
                                                      8   984    15.4 

JX1XS005   0.500   75      63.5    15748.0 246.1    123   128     2.0 
                                                     15  1050    16.4 

JX1XS002   0.250   37.5    31.75   31496.1 492.1    492    64     1.0
                                                     30  1050    16.4 
 
JX1XS001   0.125   18.75   15.875  62992.1 984.3   1970    32     0.5 
                                                     60  1050    16.4 
_______________________________________________________________________

Ray Jurgens and Carl Franck have added 3 new configurations that
provide range over-sampling.  The original long baud configurations
are set up as follows:

Config.    baud   over  range   FFT     coh     BW      Res
           micro  samp  gates   freqs   sums    Hz      Hz
           sec

JX1XS0700   7.0     1   127     64      3       375     5.86
JX1XS1000  10.0     1   127     64      2       394     6.15
JX1XS1100  11.0     1   127     64      2       358     5.59

We added the following to the JX set:

JX1XS0350   7.0     2   254     64      3       375     5.86
JX1XS0500  10.0     2   254     64      2       394     6.15
JX1XS0550  11.0     2   254     64      2       358     5.59

These new configurations have exactly the same coverage in range
and Doppler frequency as the previus set.  They provide 2 range samples
per baud filling in the deep hole between gates in the original set.  The
only disadvantages in using these are that they record more data in a 
given amount of time for the same amount of integration, and the display
is crowded if you try to show all gates at one time.  

SNR tests using the these are essentially identical to the originals.

____________________________________________________________________
RANGING SETUPS from Toutatis 1992: (code=255, FFT=256, 1 channel)
____________________________________________________________________
Setup     Baud   NACC       bandwidth  resolution   1/res'n   CLT
                               Hz         Hz          sec     gate
____________________________________________________________________

TU1XS01   0.125    123      255.06      0.9963        1.00    34
                   890       35.25      0.1377        7.26
                  1471       21.327     0.08331      12.00
                  2210       14.196     0.05545      18.03
                  2942       10.664     0.04166      24.01
                  3309        9.4810    0.03704      27.00
                  3700        8.4791    0.03312      30.19
                  7400        4.2395    0.01656      60.38
                 14800        2.1198    0.00828     120.77
                     
TU1XS02   0.25     123      127.5       0.498    
TU1XS04   0.500    307       25.5       0.100      
TU1XS08   1.000    153       25.6       0.100      
TU1XS16   2.000      4      490.2       1.915     
TU1XS32   4.000      2      490.2       1.915      
TU1XS33   4.125      2      475.3       1.857      
TU1XS80  10.000      1      392.2       1.532                 11      
TU1XS88  11.000      1      356.5       1.393                 11 


Instructions
NOTE: Data should be moved to the appropriate subdirectories in
      intruder:/d1/1999JM8/raw/

1999 JM8 POINTING: 


For these observations, we need the following files:

            PRDX.OUT.s23
           PUNCH.OUT.s23

These files are created in:  intruder:/export/data2/osod/ops/1999jm8/

and are copied to:           intruder:/d1/1999JM8/support/

POINTING  

Date (UTC)   DOY  hhmmss     RA      Dec   MACRO      TX Offsets      RTT  OSOD
                                                     LHA      Dec     

1999 07 27   208  010000 118.9043 62.1455    A                        61.6  21
1999 07 27   208  020000 118.4271 62.0178    A      0.0081  -0.0022   61.5  21
1999 07 27   208  030000 117.9569 61.8883    A                        61.3  21

PRDX.OUT.s23
RECEIVER    U.T.         RANGE         DOPPLER      LHA      DEC      AZ      EL 
 1999 JUL 27 01:30     61.5117743587   264385.219  91.2416  62.0819 327.184  30.260  
 1999 JUL 27 01:40     61.4932596358   263905.006  93.8279  62.0606 327.648  29.117  
 1999 JUL 27 01:50     61.4747778424   263445.628  96.4140  62.0392 328.153  27.989  
 1999 JUL 27 02:00     61.4563275188   263007.057  98.9999  62.0178 328.698  26.877  
 1999 JUL 27 02:10     61.4379072089   262589.220 101.5856  61.9963 329.282  25.782  
 1999 JUL 27 02:20     61.4195154631   262192.000 104.1711  61.9748 329.903  24.705  
 1999 JUL 27 02:30     61.4011508425   261815.240 106.7564  61.9532 330.561  23.648  
 1999 JUL 27 02:40     61.3828119179   261458.738 109.3415  61.9316 331.253  22.612  
 1999 JUL 27 02:50     61.3644972795   261122.251 111.9264  61.9100 331.980  21.598  
 1999 JUL 27 03:00     61.3462055333   260805.492 114.5111  61.8883 332.739  20.608  


================================================================================

BEGIN ELECTRONIC LOG

Present: Benner, Jurgens, Rose, Franck, Kelley, Ostro remote at ACM in Ithaca

Using Solution 23


1701: almost ready to go.  Danny and Reg Cormier replaced a hose up the cone at the
combiner.  Had water up there from a leak.  Seems to have dried out OK.

Earlier fears that Cassini would shut us down due to perceived RFI problems
at DSS-15 have not materialized.  We were radiating out the horn a few minutes
ago while they were tracking so evidently there wasn't a problem.  This is
a good precedent to remember in case this crops up again in the future.

We have DSS-13 available in case there are problems with the maser at 14.
I realized late last night that we hadn't set them up with an ephemeris, but
presumably if we need to fall back on them we can do that quickly.  I
left a voicemail with Steve last night about this but I hadn't heard back
from him when I left the Holiday Inn this morning.

Carl is doing the CW loopback.


TX Power = 445 kW for CW

 TX  polarization             RCP
 RCV polarization             1=RCP=OC= 15.56K at zenith
                              2=LCP=SC= 16.72K at zenith

Ch 1 Tsys =  15.87 on point (67.2 deg el)
Ch 2      =  17.08

Starting CW setup:
TX  polarization              RCP
 RCV polarization             both
 Frequencies:                 2
 Dwell:                       20 seconds
 Bandwidth:                   1000 Hz
 Sampling interval:           10000 x 0.1 usec
 VME FFT for PSD files:       4096 for 0.244-Hz resolution

171327: beam is up

echo.  ephemeris is better: dead on in Doppler

bandwidth is between 2.5 and 3.0 Hz





Configure for 0.25 us x 0.05 Hz
===============================
setup             
baud            0.25 usec
code            255
gates           255
FFT             256
ncoh            1230
bandwidth       12.753 Hz     
resolution      0.04982 Hz
TXOFF           +2.5 Hz, +100 gates (25 us) =  +50 Doppler cells  
incoh sums      xxx looks=> xxx sec/record 
CLT gate        

172923: beam is up.

1736: strong echo.  Shape is different from the other days again.
LE is "wavy" in Dopper--that is, it "undulates."  Seeing some
echo power about 35 gates back.  Delay extent seems to be almost
100 gates--if so, it's the deepest yet.

Negative edge is not well defined in the sense that echo power
seems to vanish.  This is similar to the image from the previous day
but with the pointed end left of 0 Hz. 

This image is really intriguing.

Carl noticed that the VAX is running out of disk space.  He's 
clearing data from days prior to 208...now we have plenty of space.

Echoes are strong enought that Ray and I are discussing 0.125 us
setups that we might use during the next track, which is the strongest
in snr/run of the Goldstone experiment.  There's a Toutatis setup with
0.125 us x 0.055 Hz resolution that would work well.  We can't go below
the current Doppler res'n unless we go bistatic, but then we'd lose the
SNR and make the whole exercise moot.

We lowered the threshold to 0.07 over max.  See interesting detail back
in the echo from the LE.  There is joy in Mudville this morning (plus 
McGwire hit #37 last night).  

We dropped the Mac display threshold to 0.05.  Echo extends almost 100
gates.

1806: lost the drive: acsm error.  shut off because we're going through
0 deg in az.  

180757: end of last receive before acsm problem.  Run #19.

181013: back up.  same file name: jm20903.dat  

The distribution of echo power is again strongly asymmetric: the echo
extends much deeper at negative freqs than at positive.  The positive
edge is near gate 100 whereas the negative edge extends back to about
gate 150.  The positive edge splits into two arcs of stronger points
extending back in delay.  There's a group of strong points near the middle
in freq about 40 gates back from the LE.  

Echo looks even deeper--maybe 110 gates

1824: clearing the display.

Ptx for ranging: 425-430 kW

1902: End of the track.  We completed 44 0.25 us ranging runs.

The track went very smoothly.





================================================================================

MASTERLOG
=========
                                                        rcsta  rcend
file        setup    Bandwidth  osod  TXoff       Runs  HHMMSS-HHMMSS  Comments
------------------------------------------------------------------------------------
99209        CW        1000      23                1   ~1714                incomplete run
jm20903 0.25us x 0.05Hz  12.75   23 +2.5 Hz,+25us 18    173023-180552  acsm stopped
jm20903 0.25us x 0.05Hz  12.75   23 +2.5 Hz,+25us 25    181013-190102  


PROBLEMS
========
1. leaking cable in the combiner in the cone.  Danny replaced it.
2. VAX crashed overnight before the track (around 11 pm).  It came back 
   up and appears to be OK.  
3. ACSM shut off when we went through 0 deg in azimuth.  This has been a 
   problem for several months.  


Things to do before leaving
===========================
0. update the orbit                                     ==> not necessary
1. transfer ranging data -> intruder then ftp to JPL 	==> IN PROGRESS
2. transfer cw data      -> intruder then ftp to JPL	==> DONE
3. transfer tx/rcv logs to intruder and then to JPL	==> DONE
4. write protect all data and log files	at JPL		==> 
5. update website on reason				==> 
6. set up log file for the next track			==> 
7. critique 						==> DONE
8. get the data package					==> 
9. back up the data ->  exabyte tape & write protect it	==> 
10.organize hardcopies  				==> 
11.ftp observational log -> JPL and write protect it	==> 
12.e-mail brief summary of results -> co-authors        ==> 
13.e-mail brief summary -> Ralph & Larry                ==> 
14.reduce the images on intruder and ftp --> JPL        ==> 
15.update the masterlog & ftp it --> JPL                ==> 

Draft critique
==============
Excellent track.  Images are oustanding.  We placed hundreds 
of pixels on the asteroid with 0.25 us x 0.05 Hz resolution.