The scientists presented the results of a study on the possibility of using LEO satellite signals for navigation.
Signals from SpaceX’s Starlink satellite systems, which provide high-speed broadband internet access, can be used to locate objects on the Earth’s surface with an accuracy of eight meters. This is stated in a new study by experts from Ohio State University and the University of California at Irvine (USA), conducted as part of a broader study on the possibility of using LEO satellite signals for navigation similar to GPS navigation.
This technology cannot replace mobile geographic maps on a smartphone, and during the first experiment, specialists took 13 minutes to track six Starlink satellites to determine their location on the surface of the Earth. However, the researchers were able to successfully establish the location without the help of SpaceX, which means the experiment proves that the method can be used for navigation.
“We intercepted the signal and then developed sophisticated algorithms to determine the location and demonstrated that they work with high accuracy. And although Starlink was not created for navigation purposes, we showed that it is possible to study parts of the system well enough and use it for navigation. also demonstrated that the method works with high accuracy, “said Zak Kassas, head of CARMEN (Center for Automated Vehicle Research with Multimodal AssurEd Navigation) at Ohio State University.
As explained by Cassas, “the team tested the same techniques on other constellations of LEO satellites, but with less accuracy – they managed to establish the location within 23 meters.”
“The team also worked with the US Air Force to geolocate the high-altitude aircraft, using ground cellular signals to locate a location within five meters,” Cassas said.
For reference, GPS systems provide signals with an average error of one meter.
“Since SpaceX has launched more than a thousand spacecraft into low-earth orbit, a renaissance of navigation based on LEO satellites has begun,” the study authors said.
The signals from low-orbit spacecraft are more powerful than the signals from medium-orbit satellites of the GNSS (Global Navigation Satellite System) navigation system. Moreover, LEO spacecraft are more numerous than GNSS satellites to compensate for the smaller coverage area, and their signals are spatially and spectrally more diverse.
Another advantage of LEO satellites is that they do not require additional expensive maintenance or infrastructure from a broadband Internet provider.
The study, The First Carrier Phase Tracking and Positioning Results with Starlink LEO Satellite Signals, was published last week in the IEEE journal Transactions on Aerospace and Electronic Systems.
Nvidia lost. LHR mining protection is also hacked under Linux. This was done by NBMiner developers
Two days have passed since the NiceHash developers cracked the Nvidia LHR protection, as the NBMiner team also pleased their users with the same news. Only this time we are talking about software for Linux.
Thus, Nvidia’s protection completely fell for both Windows and Linux. Unfortunately, both programs are closed source, so it’s not clear what mechanisms the developers used to hack.
Whether the loss of Nvidia will affect the availability and prices of video cards is still difficult to say. At the moment, the cryptocurrency market continues to fall, but sooner or later it will turn around, and gamers may again face shortages and overpriced graphics cards.
Xiaomi has released a profitable set of security camera and smart door locksmart door lock
Xiaomi has introduced a new kit with an outdoor video surveillance camera and a smart door lock, which includes Mi Outdoor camera and Mi Smart Door Lock 1S.
The bundle is priced at around $237, which is a great deal as these devices cost $20 more individually.
Mi Smart Door Lock 1S supports 7 unlocking methods, including fingerprint, password, temporary password, Bluetooth, HomeKit, NFC or regular key unlock. Compared to the first generation, the new lock supports both the Mijia app and Apple HomeKit.
As for the rechargeable version of Xiaomi Outdoor Camera, this is Xiaomi’s first outdoor wireless camera. It has an independent design and can be installed without connecting the mains cable or power cable. It has a wide viewing angle of 130°, 1080p resolution and supports WDR technology.
In addition, the battery version of the Xiaomi Outdoor Camera offers night vision up to 7 meters and people detection function. It is IP65 rated and has a long battery life of up to 90 days.
“These are machines for sucking out personal data.” Prayer and mental health apps have poor security
Mental health apps have worse privacy protection than most other types of apps, according to a new analysis by Mozilla. We are talking about the entire category as a whole. In addition, things are also bad for prayer applications.
The vast majority of mental health and prayer apps are exceptionally creepy. They track a variety of data, share and capitalize on users’ most intimate personal thoughts and feelings, such as mood, mental state, and biometric data.
The team analyzed 32 mental health and prayer apps. Of these apps, 29 received a Privacy not included warning, indicating that the team is concerned about how the app manages user data.
These applications collect large amounts of personal data in accordance with vague privacy policies. Most applications have also been found to have poor security practices that allow users to create accounts with weak passwords. Considering how much personal information such programs can contain, this is a bad feature.
The list of the worst programs according to the specified criteria included Better Help, Youper, Woebot, Better Stop Suicide, Pray.com and Talkspace. In particular, the Woebot chatbot claims to collect information about users and shares this data for advertising purposes, and Talkspace collects transcripts of user chats.
They work like data-sucking machines with the look and feel of a mental health app. In other words: wolves in sheep’s clothing
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