Real time Kinematic GPS

From Signal Identification Wiki
Jump to: navigation, search

Real time Kinematic GPS
GPS RTK.PNG
Frequencies 450 Hz,460 Hz,940 MHz
Frequency Range 450 Hz - 940 MHz
Mode FM
Modulation PSK
ACF various
Emission Designator
Bandwidth 12.5 kHz
Location US
Short Description Real time Kinematic GPS, positioning is a satellite navigation technique used to enhance the precision of position data derived from satellite-based positioning systems (global navigation satellite systems, GNSS) such as GPS, BeiDou, GLONASS, Galileo and NavIC.
I/Q Raw Recording
Audio Sample

It uses measurements of the phase of the signal's carrier wave in addition to the information content of the signal and relies on a single reference station or interpolated virtual station to provide real-time corrections, providing up to centimetre-level accuracy.

The way to tell this is also RTK data is by the carrier's almost "musical-beat" like sounding pulse, representing a random binary sequence. With reference to GPS in particular, the system is commonly referred to as carrier-phase enhancement, or CPGPS.[2] It has applications in land survey, hydrographic survey, and in unmanned aerial vehicle navigation.

The distance between a satellite navigation receiver and a satellite can be calculated from the time it takes for a signal to travel from the satellite to the receiver. To calculate the delay, the receiver must align a pseudorandom binary sequence, contained in the signal to an internally generated pseudorandom binary sequence Since the satellite signal takes time to reach the receiver, the satellite's sequence is delayed in relation to the receiver's sequence. By increasingly delaying the receiver's sequence, the two sequences are eventually aligned. (hence the result of the music beat-sequence).

The signal is primarly used on farms to measure distance and other related info as well.

https://en.wikipedia.org/wiki/Real-time_kinematic#/media/File:SmaRTK_GNSS_RTK_Receiver_being_used_to_survey_the_forest_population_in_Switzerland..jpg

GPS RTK 2.PNG


^^ A bit of a slower one, half the rate of this page's audio sample.