notes.husk.org

GPS satellite diagram, via AL@Latitude: Equator.

Mon, 18 Mar 2013 18:46:19 +0000

GPS satellite diagram, via AL@Latitude: Equator.

Sandia engineer Steve Yearout displays a 1/15 scale model of a...

Mon, 18 Mar 2013 18:31:38 +0000

Sandia engineer Steve Yearout displays a 1/15 scale model of a NAVSTAR Block IIR GPS satellite: “Sandia sends sensors into space to detect nuclear blasts globally”. (Google cache; via.)

SatTrack Cam Leiden (via iamdanw): In the evening of June 25 I...

Mon, 18 Mar 2013 18:26:00 +0000

SatTrack Cam Leiden (via iamdanw):

In the evening of June 25 I by chance captured a GPS satellite that was decommisioned last year on photograph: Navstar 39 (USA 128, GPS 2A-27, 1996-056A). It showed up as a very bright small trail and was flashing at a rate of 2-3 flashes per 10 seconds.

"Some of the triangulation pillars I visit are still used today in the GPS network. They have signals..."

Tue, 15 Jan 2013 05:05:24 +0000

“Some of the triangulation pillars I visit are still used today in the GPS network. They have signals buried deep into them that help to keep the satellite network functioning.”

- Rob Woodhall, the first man to attempt to visit all the trig points in Britain, quoted by Peter Naldrett in Geographical Magazine, March 2009.

More: OS Net infrastructure, active stations.

Michael Zhang at Petapixel: Apple Moves One Step Closer Toward...

Thu, 30 Aug 2012 23:45:09 +0100

Michael Zhang at Petapixel: Apple Moves One Step Closer Toward Location-Based Camera Disabling (via)

U.S. Patent No. 8,254,902, published on Tuesday, is titled, “Apparatus and methods for enforcement of policies upon a wireless device.”

Navstar by San Diego Air & Space Museum Archives on...

Fri, 25 May 2012 23:09:07 +0100

Navstar by San Diego Air & Space Museum Archives on Flickr:

Providing continuous global coverage in all weather, the NAVSTAR Global Positioning System will give suitably equipped users three-dimensional positioning and velocity information and a precise timing reference in real time. Besides routine navigation, possible applications include search-and-rescue operations, land and aerial rendezvous, and geodetic surveys.

This Rockwell International promotional image presumably predates the launch of the first NAVSTAR satellite in 1978.

Chris Heathcote’s picture of my incoming flight stacking...

Thu, 17 May 2012 18:46:13 +0100

Chris Heathcote’s picture of my incoming flight stacking over north-west London last Thursday.

Don’t go where I can’t see you by Jeremy Wood: GPS...

Thu, 17 May 2012 18:26:06 +0100

Don’t go where I can’t see you by Jeremy Wood:

GPS flight tracks with section of the River Thames in London
1:500 000 Scale, 100 km Grid

Indirectly via prosthetic knowledge. I also noticed his earlier My Ghost in Claire Dobbin’s new book, London Underground Maps, which seems to have some overlap with the previous three Capital Transport books on the map (which I should probably write about), but which also covers some new territory. I may have to buy it.

"She is disoriented – and yet her progress is a perfectly plotted trajectory through urban space: she..."

Sat, 31 Mar 2012 18:22:00 +0100

“She is disoriented – and yet her progress is a perfectly plotted trajectory through urban space: she looks into the glowing multifaceted jewel in the palm of her hand and here other parallelograms interleave, shuffle and montage in response to the tweezer motions and baton-flicks of her fingers. It tells her where to go, the jewel, and when she places it to her ear it speaks to her, so that in turn she can command her own faltering legs to carry her to the right, to the left, straight ahead”

- Will Self: Walking is political in The Guardian.

"As we drive out to the new dock wall, the car’s sat nav shows us sailing out into the Thames - the..."

Fri, 24 Feb 2012 18:43:05 +0000

“As we drive out to the new dock wall, the car’s sat nav shows us sailing out into the Thames - the map has not yet been updated for a project that has literally redesigned the coastline of Essex.”

- Yes, it’s from the Evening Standard’s Life and Style section, but Supersize superport: London Gateway by Kieran Long is a surprisingly good read about the new container port being constructed on the Thames estuary. (via iamdanw)