Pseudo range difference method based on ground base station
A pseudo-range difference, ground base station technology, applied in the field of navigation and positioning, can solve problems such as positioning errors, and achieve the effect of improving system positioning accuracy
Inactive Publication Date: 2019-11-15
相维(北京)科技有限公司
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Problems solved by technology
[0002] At present, some ground base station positioning technologies such as TC-OFDM, UWB, and WIFI realize position calculation by measuring TDOA and TOA. Due to clock synchronization, cable delay, wireless signal interference, and receiver noise, various degrees of positioning errors will be b
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[0025] Selection of equipment: two TC-OFDM base stations can simultaneously transmit four channels of signals, externally connected to an atomic clock for 1pps synchronization, one TC-OFDM differential station, and one TC-OFDM positioning terminal.
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The invention discloses a pseudo range difference method based on a ground base station. A complete realization manner of the method is included. Via the method, positioning signals can be received inreal time, TDOA and TOA difference information of certain position is calculated, the difference information after calculation is sent to a server in real time, the server forwards the difference information received in real time to a receiver, and the receiver completes final positioning settlement according to positioning and difference signals received in real time. The method can be used to improve the positioning precision and provide basis for analysis on a positioning error.
Description
technical field [0001] The invention belongs to the field of navigation and positioning. Background technique [0002] At present, some ground base station positioning technologies such as TC-OFDM, UWB, and WIFI realize position calculation by measuring TDOA and TOA. Due to clock synchronization, cable delay, wireless signal interference, and receiver noise, various degrees of positioning errors will be brought about. , the differential technology for satellite positioning is relatively mature and has been well applied in the market, but currently there is no differential technology and device for ground base stations on the market that can eliminate the positioning errors caused by these links. Contents of the invention [0003] Calculate the pseudo-range error of the signal transmitted by the ground base station and compensate it in the receiver equipment to improve the positioning accuracy of the ground base station positioning technology. [0004] The specific impleme...
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Login to View More IPC IPC(8): G01S5/10H04W4/029H04W64/00
CPCG01S5/10H04W4/029H04W64/00
Inventor 李赟姬春旭
Owner 相维(北京)科技有限公司