Beidou rotating adaptive carrier wave tracking system and method
A carrier tracking and carrier tracking loop technology, applied in the field of navigation, can solve the problems of Beidou signal reception difficulty, etc., and achieve the effect of low position error, avoiding excessive error, and fast positioning
Active Publication Date: 2019-06-18
SICHUAN AEROSPACE SYST ENG INST
View PDF4 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] The high-speed rotation of the aircraft around the vertical axis during flight can effectively maintain its flight stability and improve the penetration capability of the weapon system, but the high-speed rotation also brings difficulties in receiving Beidou signals
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0049] In view of the changing law of the received signal in the high rotation state, the loop tracking strategy and loop parameters are adjusted in the design of the carrier tracking loop of the Beidou receiver, so as to improve the dynamic redundancy performance and signal detection performance of the receiver. This embodiment provides a Beidou rotation adaptive carrier tracking system, its principle block diagram is as follows figure 1 As shown, it includes a state observation module and a combination tracking module arranged in the carrier tracking loop, the combination tracking module is arranged between the integral clearer and the loop filter in the carrier tracking loop, and the state observation module It is set in parallel with the integral clearer, and the state observation module is connected with the combination tracking module; wherein, the state observation module is used to observe the variation in the body rotation process and judge the conversion threshold, an...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a Beidou rotating adaptive carrier wave tracking system. The system comprises a state observation module and a combined tracking module which are arranged in a carrier wave tracking loop. The combined tracking module is arranged between an integral zero clearing device and a loop filter in the carrier wave tracking loop. The state observation module and the integral zero clearing device are arranged in parallel. The state observation module is connected to the combined tracking module. The state observation module is used for observing variable quantities in a projectile body rotation process and determining a conversion threshold, wherein the variable quantities include a projectile body rotation speed, a Doppler frequency shift and a phase tracking error. The combined tracking module is used for modulating a carrier wave tracking strategy to realize accurate tracking of signals, wherein the carrier wave tracking strategy includes a frequency-locked loop carrier wave tracking strategy, a frequency-locked loop assisted phase-locked loop carrier wave tracking strategy, and a pure phase-locked loop carrier wave tracking strategy. The invention also discloses aBeidou rotating adaptive carrier wave tracking method which can be used to effectively reduce a risk of losing lock in a loop.
Description
technical field [0001] The invention relates to the technical field of navigation, in particular to a Beidou rotation adaptive carrier tracking system and method thereof. Background technique [0002] The high-speed rotation of the aircraft around the longitudinal axis during flight can effectively maintain its flight stability and improve the penetration capability of the weapon system, but the high-speed rotation also brings difficulties in receiving Beidou signals. In order to meet the needs of navigation and guidance under the condition of high-speed rotation, it is imminent to study the wave tracking technology in the high-speed rotation state. Contents of the invention [0003] In order to solve the problems existing in the prior art, the object of the present invention is to provide a Beidou rotation adaptive carrier tracking system and method thereof. The present invention aims at the change law of the received signal under the high rotation state, and in the desig...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01S19/29
Inventor 何小旭刘川周旅
Owner SICHUAN AEROSPACE SYST ENG INST