A Beidou single frequency carrier phase cycle slip detection method
A single-frequency carrier and cycle-slip detection technology, applied in radio wave measurement systems, measurement devices, satellite radio beacon positioning systems, etc., can solve the problem of inaccurate epoch positioning of small cycle-slip signals
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Embodiment 1
[0044] Example 1: Figure 1-3 As shown, a cycle slip detection method of Beidou single-frequency carrier phase, first use the phase subtraction pseudo-range method to calculate and construct the cycle slip signal for preliminary detection; then set the matrix dimension according to the singular value curve, and construct the Hankel matrix for the cycle slip signal , decompose the cycle slip signal by SVD; finally calculate the correlation coefficient between the original cycle slip signal and its SVD component signal and the correlation coefficient between the SVD component signal and the single-frequency carrier phase signal without cycle slip, and then construct the sensitivity factor and its difference spectrum, According to this, the sensitive SVD component is selected, and the positioning factor is set because the sensitive factor disrupts the order of the singular values, and the sudden singular value corresponding to the sensitive component signal is extracted through th...
Embodiment 2
[0070] Embodiment 2: The cycle slip detection method of a kind of Beidou single-frequency carrier phase first utilizes the phase subtraction pseudorange method to calculate and construct the cycle slip signal, and conducts preliminary detection; then set the matrix dimension according to the singular value curve, and perform the cycle slip signal The Hankel matrix is constructed, and the cycle slip signal is decomposed by SVD; finally, the correlation coefficient between the original cycle slip signal and its SVD component signal and the correlation coefficient between the SVD component signal and the single-frequency carrier phase signal without cycle slip are calculated, and then the sensitivity factor and its The differential spectrum, based on which the sensitive SVD component is selected, and the positioning factor is set because the sensitive factor disrupts the order of the singular values, and the sudden singular value corresponding to the sensitive component signal is...
test Embodiment 502036091
[0071] Step 1. Use UltraEdit to open the dual-star five-frequency test case 502036091t.13O from Shanghai Sinan Navigation, and select 1200 sets of carrier phase observations and pseudorange observations in the Beidou B3 frequency band. The sampling interval of this frequency band is 1s, and the wavelength is 0.236 m;
[0072] Step 2. First, copy the carrier phase observation data and pseudorange observation data of the selected frequency band to an Excel table, subtract the pseudorange observation value from the carrier phase observation value, and calculate the difference between epochs to obtain the original Since the cycle slip signal is calculated in an Excel table, the .xls format file must be converted into a .mat format when the data is imported into MATLAB. The original cycle slip detection quantity (cycle slip signal) constructed is as follows figure 2 shown in figure 2 It can be seen that there are fluctuations of different magnitudes in the data taken. These fluc...
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