HyTES/19, flight day 169/2019, Grosseto

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Data location: /users/rsg/arsf/arsf_data/2019/flight_data/italy/HyTES19-2019_169_Grosseto

Data arrived from Kings College London via hardisk on July 15 2019.

Scientific objective: Joint NASA and ESA campaign flying JPL’s HyTES thermal instrument over sites in Europe with a focus on crops and soil. Aim is to inform the future Land Surface Temperature Monitoring (LSTM) satellite mission. The NCEO Fenix instrument was flown alongside HyTES to provide visible – SWIR hyperspectral data.

PI: Martin Wooster

Sensors:

Fenix (requested, flown)

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Navigation Processing
Basestation data converted to RINEX. Of the three RINEX files (which contain multiple days of data), a file for this date has been created with the following command:

teqc -st 2019_06_18:06:58:00.770 -e 2019_06_18:11:25:33.840 +nav Default_9488_1806_065800.19n Default_9488_0509_114526.m00 > Default_9488_1806_065800.19o

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Navigation Processing
PPP processing in IPAS-TC hung at 57% of the reverse process step. Will return to processing this.

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Navigation Processing
PPP processing completed using IPAS-TC. SOL file generated.

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Fenix Processing
Started processing
GPS end time had to be changed for

• FENIX-169-12.hdr
• FENIX-169-14.hdr
• FENIX-169-3hdr
• FENIX-169-4hdr
• FENIX-169-6hdr

This was because the start time was the same as the end time. Minute was added to end time for these files to allow generation of config file

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Fenix Processing

SCT values identified

Flightline	FENIX
1 .00	4
1.01	4.4
1.02	5.1
2	3.2
3	79.7
4	12.4
5	15.7
6	67
7	3.2
8	2.7
10	3.2
11	2.6
13.00	4.4
13.01	5
13.02	5.7
14	159.9
15	4
16	2.9
17	3.4

Flight Lines 9 and 12 were broken flightlines so will not be processed

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Fenix Processing

Possible FPS issues, requires other opinion

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Fenix Prcoessing
Checking

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Fenix Processing
I reprocessed 3-band lines and found:

• Flightlines 1, 13 & 14 look like there is a Frames per Second (FPS) error.
  
• It is hard to initially tell if lines 7, 8, 10, 11, 15, 16 & 17 have FPS errors.
  
• Lines that look fine: 2, 3, 4, 5 & 6.

Probably best to manually determine a suitable FPS value (can be changed in the Fenix header files grep *hdr -e 'fps =').
Lines 1 & 13 have FPS values of 79.000.
All other lines have values of 27.000.
Perhaps it is worth see if FPS values of 27.000 works well with lines 1 & 13 (two of the three immediately visible FPS errors).
Also note that if a line is split (e.g lines 1 & 13), all parts should have the same SCT values.

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Hyperspectral Process
I have changed the FPS of lines 1 & 13 from 79.000 to 27.000 and processed all lines.
The new FPS for lines 1 & 13 is clearly worse. However, the reprocessed lines 14, 15, 16 & 17 also show significant SCT (and/or possible FPS errors).
Will continue to investigate.