From: [email-masked] (wxsat mailer)
To: [email-masked]
Date: 95-12-15 04:01:45 EST

# The following is forwarded by the wxsat mail list daemon.
# Mail addressed to wxsat-mail-daemon@ssg will be discarded.
# Replies: [email-masked] - subscription changes: [email-masked]

Subject: Re:  NOAA AVHRR FOV
From: [email-masked]	(Kjell Magnussen)
Date: Thu, 14 Dec 1995 18:21:50 -0800

> 
> Subject: NOAA AVHRR FOV
> From: [email-masked]
> Date: Thu, 14 Dec 1995 16:28:41 UTC
> 
> Hello out there!
> 
> Can someone tell me what the NOAA AVHRR's Field of View angle is?
> Is this angle different for each satellite? If so, I would need it for each
> of those living NOAA birds!
> 
> Thank you for your help....it will be much appreciated!
> 
> Chantal Delorme
> [email-masked]
> 
  The IFOV of each detector (one detector per spectral band) is approximately
 1.4 milliradians.

  The AVHRR scans at 360 RPM (6 RPS) (360.00000 if the on-board clock
subsytem
 is okay and the AVHRR is running phase locked, which is the normal mode of
 operation).

  The detector outputs are sampled at 39,936 samples per second. This is
 equivalent to 0.944 millirads between samples, so there are about one and
 a half samples per IFOV.

  2048 samples are acquired per band per Earth scan, so the total field of
 view, edge-to-edge is (2047*0.944 + 1.4) millirad = 110.80 degrees. The
 scan is centred about nadir, so it is +/- 55.40 degrees from nadir.

  These numbers are the same for ALL the NOAA satellites of the TIROS-N
series
 (NOAA-6 to NOAA-14).

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

Kjell Magnussen          MacDonald Dettwiler
Principal Engineer       13800 Commerce Parkway
Ph. (604) 231-2515       Richmond, BC, Canada
Fax (604) 278-2936       V6V 2J3
E-mail: [email-masked]        Ph. (604) 278-3411
   Internet home page:  http://www.mda.ca
=================================================

--------------------------- End Of Message
-----------------------------------

----------------------- Headers --------------------------------
From [email-masked]  Fri Dec 15 04:01:17 1995
Return-Path: [email-masked]
Received: from mx5.smtp.psi.net (mx5.smtp.psi.net [38.8.139.2]) by
emin11.mail.aol.com (8.6.12/8.6.12) with ESMTP id EAA12467; Fri, 15 Dec 1995
04:01:16 -0500
Received: from uu7.psi.com by  mx5.smtp.psi.net (8.6.12/SMI-4.1.3-PSI)
	id CAA21053; Fri, 15 Dec 1995 02:41:16 -0500
Received: from wxsat.UUCP by uu7.psi.com (5.65b/4.0.940727-PSI/PSINet) via
UUCP;
        id AA27436 for ; Thu, 14 Dec 95 23:47:17 -0500
Received: by ssg.com (1.64/waf)
	via UUCP; Fri, 15 Dec 95  03:01:47 UTC
	for [email-masked]
To: [email-masked]
Subject: Re:  NOAA AVHRR FOV
From: [email-masked] (wxsat mailer)
Reply-To: [email-masked]
Original-Sender: [email-masked]	(Kjell Magnussen)
Message-Id: <[email-masked]>
Date: Fri, 15 Dec 95  03:01:47 UTC
Organization: System Support Group