Supercompact combination satellite navigation receiver
A technology of satellite navigation and ultra-tight combination, applied in the field of satellite navigation, can solve problems such as inability to give positioning results, low sensitivity, and loss of satellite signal lock
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[0029] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.
[0030] GNSS / IMU ultra-tight integrated satellite navigation receiver based on vector tracking such as figure 1 As shown, it includes sequentially connected radio frequency front-end 1, signal preprocessor 2, baseband prefilter 3, adaptive filter 4 and navigation filter 5, and micro inertial navigation module 6, pseudorange and pseudorange rate calculation module 7 , ephemeris calculation and star selection calculation module 8.
[0031] The signal preprocessor 2 includes a correlator 21 and a local signal generator 22. The I / Q signal accumulated and output by the correlator 21 is used as the observation input of the baseband prefilter 3. The local signal generator 22 generates a local carrier and pseudo code.
[0032] Wherein the m...
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