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GPS tracker in iOS: Kalman filter and geohash implementation

https://sudonull.com/gps-tracker-in-ios-kalman-filter-and-geohash-implementation

How to create a background GPS tracker on SwiftUI without third-party dependencies. Technical solutions for data processing and passing App Store Review. Learn the details of implementation.

AI GPS Predicts Drugs for Liver Cancer

https://sudonull.com/ai-gps-predicts-drugs-for-liver-cancer

GPS Platform Analyzes Molecules to Find Treatments for HCC and IPF. Tests on Mice and Tissues Confirmed Efficacy. Open the Code and Apply to Your Tasks in drug discovery.

ETL for 15 million GPS pings: stack and architecture

https://sudonull.com/etl-for-15-million-gps-pings-stack-and-architecture

Breakdown of ETL system processing 15 million GPS coordinates of buses per day. PostgreSQL, PostGIS, PySpark, Data Vault. Trip segmentation and spatial analytics for middle/senior dev. Study the implementation.

SDR GPS on STM32: processing without ASIC

https://sudonull.com/sdr-gps-on-stm32-processing-without-asic

Create an SDR GPS receiver on STM32F4 with MAX2769. Bitwise XOR instead of multiplication, DMA capture 16 MHz. Guide for embedded developers. Study the code.

Robust VB-UKF for GPS Urban Canyon Outliers

https://sudonull.com/robust-vb-ukf-for-gps-urban-canyon-outliers

Discover how Variational Bayes UKF with Student's t-distribution slashes GPS positioning errors in urban canyons by over 50%. Learn robust sensor fusion techniques for reliable navigation—explore simulations and code safeguards now.

From other projects

Solar Storm Threat: GPS, Power Grids at Risk

https://ymaho.com/solar-storm-threat-gps-power-grids-at-risk

A once-in-a-century solar storm could knock out GPS and power grids. Learn how it works and why it matters to you.

Japan's 2027 Mission to Inspect Dead Satellites in Orbit

https://ymaho.com/japan-s-2027-mission-to-inspect-dead-satellites-in-orbit

Learn how a private Japanese spacecraft will inspect defunct satellites to tackle space junk—and why it matters for GPS, weather, and global communications.

From the web

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https://en.wikipedia.org/wiki/Global_Positioning_System

The Global Positioning System ( GPS ) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta 31. [2][3] It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the Earth where signal quality permits. [4] It does not require the user to transmit ...

Apr 20, 2026 ·

https://www.gps.gov/

Apr 20, 2026 · The Global Positioning System ( GPS ) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. The Global Positioning System ( GPS ) is an essential element of a global information infrastructure. The free, open, and dependable nature of GPS has led to the development of hundreds of applications affecting every aspect of modern life.

Satellite navigation device - Wikipedia

https://en.wikipedia.org/wiki/Satellite_navigation_device

A satellite navigation device, also called a satnav device or GPS /GNSS device, uses satellites of the Global Positioning System ( GPS ) or other global navigation satellite systems (GNSS) to determine the user's geographic coordinates. It may also display the user's position on a map and offer routing directions (as in turn-by-turn navigation).

Get directions for driving, transit, walking, and more -...

https://maps.google.com/maps/dir/

Find local businesses, view maps and get driving directions in Google Maps.

Sep 25, 2023 ·

https://www.nasa.gov/directorates/somd/space-communications-navigation-program/gps/

Sep 25, 2023 · The Global Positioning System ( GPS ) is a space-based radio-navigation system, owned by the U.S. Government and operated by the United States Air Force (USAF).

Oct 3, 2025 ·

https://education.nationalgeographic.org/resource/gps/

Oct 3, 2025 · A global positioning system ( GPS ) is a network of satellites and receiving devices used to determine the location of something on Earth. Some GPS receivers are so accurate they can establish their location within 1 centimeter.

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