The minimum signal level required for user devices to capture navigation signals and locate normally under cold start c..
After normal positioning, the user's device can continue to maintain the minimum signal level required for tracking and..
The time required for a user's device to recover from a short-term loss of lock in the received navigation signal and t..
A baseline vector is formed between the main antenna and the secondary antenna of a dual antenna GNSS product, and the ..
GNSS products not only receive signals directly from satellites, but also receive satellite signals reflected by the su..
When radio signals pass through the troposphere of the Earth's atmosphere, they are affected by atmospheric refraction,..
When navigation signals pass through the ionosphere, there is a transmission delay relative to the signal propagation i..
Cold start: GNSS products start up in a state where the ephemeris, almanac, approximate time, and approximate location ..
PPP-RTK is a technology that combines PPP positioning and RTK positioning. PPP-RTK is a high-precision positioning tech..
Precision point positioning. Using a single GNSS device, high-precision positioning is achieved based on carrier phase ..
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