Trains is "a collective portrait of people in 20th century Europe, capturing their hopes, desires, dramas, and tragedies." ...

Real-time and accurate positioning is the key to ensuring the safe operation of trains. Traditional train positioning technology relies on track-side equipment, and there are problems such as high ...

Passive magnetic sensors can measure the magnetic field density in three orthogonal axes and are often integrated on a single chip. These sensors are low-cost sensors and widely used in car navigation ...