Navigation signal acquiring method based on compressed sensing
A navigation signal and acquisition method technology, applied in the field of navigation signal acquisition based on compressed sensing theory, can solve the problem of high sampling frequency, achieve the effect of reducing transmission pressure, reducing work burden, and overcoming the requirements for hardware
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[0022] The patent of the present invention realizes the acquisition of navigation signals at low sampling frequency through a method of random sparse sampling on the basis of compressed sensing theory. A new method of navigation signal acquisition through figure 1 The principle block diagram shown in the figure realizes that the navigation signal is randomly and sparsely sampled, and the signal reconstruction is completed through the weighted L1 norm optimization algorithm.
[0023] Define the original signal as . If the signal is in a fixed orthogonal basis The following is sparse, find the transformation coefficient ; Then design an observation matrix , for the transformation coefficient Make observations to get observation sets ;Finally, an approximation of the solution is obtained using an optimization problem in the 1-norm sense: .
[0024] The specific steps of the novel navigation signal acquisition method based on the compressed sensing theory of the...
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