Showing posts with label GPS. Show all posts
Showing posts with label GPS. Show all posts

Sunday, March 22, 2026

GPS-tracking collars in Botswana help lions and farmers

Good news! 

"Using GPS-tracking collars, a system of mobile alerts, and more hands-on herding, cattle farmers in Botswana’s Okavango Delta are successfully coping with rebounding lion populations. Over a decade after implementing these technologies and techniques, both lion and cattle killings in the region have fallen." (Source)

Tuesday, June 10, 2025

The race to find GPS alternatives e.g. Xona Space Systems Pulsar

Good news!

"Later this month, an inconspicuous 150-kilogram satellite is set to launch into space aboard the SpaceX Transporter 14 mission. Once in orbit, it will test super-accurate next-generation satnav technology designed to make up for the shortcomings of the US Global Positioning System (GPS).

Despite the system’s indispensable nature, the GPS signal is easily suppressed or disrupted by everything from space weather to 5G cell towers to phone-size jammers worth a few tens of dollars. The problem has been whispered about among experts for years, but it has really come to the fore in the last three years, since Russia invaded Ukraine.

Now, startup Xona Space Systems wants to create a space-based system that would do what GPS does but better."

Inside the race to find GPS alternatives | MIT Technology Review "Startup Xona Space Systems hopes to provide an unspoofable alternative to increasingly threatened GPS."







Thursday, February 13, 2025

Gyroscope-on-a-Chip Targets GPS’s Dominance Centimeter-scale wayfinding accuracy emerges from millimeter-scale tech

Amazing stuff! Will this also be built into your next smartphone?

"This year, two companies—Santa Clara, California-based Anello Photonics and Montreal-based One Silicon Chip Photonics (OSCP)—have introduced new gyroscope-on-a-chip navigation systems, allowing for precise heading and distance tracking without satellite signals.

Such inertial navigation is increasingly important today, because GPS is susceptible to jamming and spoofing, which can disrupt navigation or provide misleading location data. These problems have been well-documented in conflict zones, including Ukraine and the Middle East, where military operations have faced significant GPS interference. For drones, which rely on GPS for positioning, the loss of signal can be catastrophic, leaving them unable to navigate and sometimes resulting in crashes. ...

That was the state of things until Caltech electrical engineering and medical engineering professor Ali Hajimiri and his team made a breakthrough that overcame previous size and accuracy limitations. In a 2018 paper, they described how they created a solid-state gyroscope small enough to fit on a grain of rice. Like the optical gyroscopes that appeared before it, this gyroscope leveraged the Sagnac effect, a principle first demonstrated in 1913 by French physicist Georges Sagnac. ..."

New Alternatives to GPS could Be Jamming- and Spoof-Proof - IEEE Spectrum




Tuesday, September 24, 2024

Electronic warfare against GPS is spooking civilian pilots, airlines and air-safety officials

Bad news!

"GPS spoofing, which militaries use to ward off drones and missiles, is also permeating growing numbers of commercial aircraft, including U.S. airlines’ international flights. Fake data can cause glitches such as false warnings and misdirected flight paths, according to pilot reports. The airline industry and regulators are working on short-term workarounds and longer-term fixes, but anti-GPS spoofing equipment standards won’t be issued until next year at the earliest, according to people familiar with the matter."

The Wall Street Journal What's news

Not always friendly and safe!


Tuesday, December 25, 2012

It Is High Time For More Telecommuting And Smarter Traffic Management


The Current Situation

This will obviously be an incomplete description of the current situation.

How many hours are lost each day due to traffic congestion during rush hours? How much gas is wasted? And so on, because so many employees still follow this convention of driving to and from work every week day at about the same time. More flexible work hours so far appear to have had only a minor positive impact.

For various reasons roadways are not being built to alleviate some of this daily traffic ordeal during rush hour. Environmentalists and urban planners are against it and they tirelessly try to make commuting more of a hassle, e.g. HOV (high occupancy vehicle) lanes.

Telecommuting Is Ready For Prime Time

Like the paperless office in recent times, telecommuting was overhyped and overpromised when it started in the early 1970s. But what a difference 40 years makes! Before the industrial revolution it was very common to work at home for most workers.

Given today’s technology in the 21st century it would be very feasible to implement telecommuting on a large scale to achieve something like that the average employee drives to work only a few days a week, the rest of the time he or she works from home or some other location that requires less driving. Nowadays, many office jobs could be done from home even those where sensitive information is involved. Most IT/software development work could be done from home as well.

Today, according to the Wall Street Journal just 6.6% of the US workforce work from home fulltime in 2010 up from 4.8% in 1997. That is a positive development in the right direction, but less than three percentage points in over a decade is very slow.

However, I do not advocate government intervention or subsidies to promote more telecommuting. Government could play a role in educating about the benefits of telecommuting. It could also reduce business taxation so businesses could opt to implement more telecommuting, if beneficial to their business.

More telecommuting offers businesses the opportunity to reduce all kinds of costs, e.g. buildings or other infrastructure.

US Health Insurance Companies Do It

A recent Wall Street Journal article titled “Out of the office but still on the job” (subscription required) by David Wessel published on 12/20/12 highlighted that at least two major health insurance companies in the US, i.e. Aetna and Cigna Corp., where a substantial number of employees work full time from home.

According to the article, “nearly half – 47% - of Aetna’s 35,000 US employees work from home. It allowed Aetna to “drive down costs, particularly real-estate costs … estimates … are 15% to 25% lower than they would otherwise be. … reduced Aetna’s total office space by 2.7 million square feet …”. “About 20% of employees at Cigna Corp … work from home.

Smarter Traffic Management

Something that I personally find offending when I commute to or from work or in general is that urban surface street traffic lights are too often timed in such a way that you are stopped at one light to be stopped again at the light just one or two blocks away on non-residential streets. Is this intentional or just coincidence? Given the ideological mindset of urban planners preoccupied with routing traffic or discouraging certain traffic I assume the former.

A recent article by the UC Berkeley NewsCenter titled “Cellphone, GPS Data Suggest New Strategy for Alleviating Traffic Tie-Ups” published on 12/20/12 gives you a flavor of what might be possible in the near future to smartly route commuter traffic based on our smart cell phones with built-in GPS, accelerometers etc.. This study got it a little wrong when it blames basically the commuter for the congestion by saying something like “not all drivers are contributing uniformly to congestion”. The focus of this study was probably also too narrow, but it nevertheless offers insights how our cell phone data could be used to minimize traffic congestion by offering advice to redirect traffic or by adjusting the timing of traffic lights etc.