Search found 12 matches

by ctampion
Thu Apr 14, 2022 5:18 pm America/New_York
Forum: Home
Question: GEDI L1A data access
Replies: 4

Re: GEDI L1A data access

Hello,
I’m hoping to access Level 1A data (as distinct from Version 1 data) which the ATBD says can be requested.
Thank you.
by ctampion
Tue Mar 22, 2022 5:52 pm America/New_York
Forum: Home
Question: GEDI L1A data access
Replies: 4

Re: GEDI L1A data access

Hello,
Thanks for your reply.
Are you sure those options provide access to L1A data? I do not see L1A on EarthdataSearch, for example.
Thank you.
by ctampion
Fri Mar 18, 2022 7:54 pm America/New_York
Forum: Home
Question: GEDI L1A data access
Replies: 4

GEDI L1A data access

Hello, The Algorithm Theoretical Basis Document (ATBD) for GEDI Transmit and Receive Waveform Processing for L1 and L2 Products says: "...end users wanting access to the raw waveform can request the L1A data product." Source: https://lpdaac.usgs.gov/documents/581/GEDI_WF_ATBD_v1.0.pdf How ...
by ctampion
Thu Mar 17, 2022 9:45 pm America/New_York
Forum: Home
Question: GEDI 'system response impulse' or 'return impulse response'
Replies: 4

Re: GEDI 'system response impulse' or 'return impulse response'

Hello,

Only just spotted your 25 Feb reply. I'll give that a go.

Thanks again for your help.
by ctampion
Fri Feb 18, 2022 4:26 pm America/New_York
Forum: Home
Question: GEDI 'system response impulse' or 'return impulse response'
Replies: 4

Re: GEDI 'system response impulse' or 'return impulse response'

Hello, Thank you for that. I assume the person from GEDI is referring to the txwaveform layer/field which is easy enough to extract. I am no expert on this, as you probably already tell, but my understanding is that deconvolution also requires a kind of "blank response" or control sample s...
by ctampion
Fri Feb 18, 2022 3:07 am America/New_York
Forum: Home
Question: GEDI 'system response impulse' or 'return impulse response'
Replies: 4

GEDI 'system response impulse' or 'return impulse response'

Hello,
Is there any info available regarding the 'system response impulse' / 'return impulse response' for the GEDI instrument? For context, this would assist with deconvolution of the GEDI waveform.
Thanks in advance.
by ctampion
Thu Feb 10, 2022 7:20 pm America/New_York
Forum: Home
Question: Foliage Height Diversity calculation in GEDI
Replies: 5

Re: Foliage Height Diversity calculation in GEDI

Brilliant - thank you :D
by ctampion
Wed Jan 20, 2021 4:12 pm America/New_York
Forum: Home
Question: Foliage Height Diversity calculation in GEDI
Replies: 5

Re: Foliage Height Diversity calculation in GEDI

Thanks Janice :-)
by ctampion
Thu Jan 14, 2021 7:53 am America/New_York
Forum: Home
Question: Foliage Height Diversity calculation in GEDI
Replies: 5

Foliage Height Diversity calculation in GEDI

Hello,
What are the layers used to calculate fhd_normal in the GEDI L2B product? Is it the 0.61m and 7.6m of the MacArthurs, or is it the 5m intervals used for other L2B layers like pai and pavd? I'm hoping to replicate this value.
Thanks for your help.
by ctampion
Mon Jan 11, 2021 7:04 pm America/New_York
Forum: Home
Question: Calculating PAI from GEDI waveform
Replies: 6

Re: Calculating PAI from GEDI waveform

Hello again, I was hoping to give a worked example of my problem, however I've struck a different problem with some data I was going to use for that purpose. e.g. the waveform in the L1B product looks a bit odd, particularly relative to the data in the L2A product. e.g. there's not much energy left ...