Two Dimensional Positioning Method of Indoor Satellite Navigation Using Double Leaky Coaxial Cable

In order to solve the problem that the indoor satellite navigation receiver can’t locate normally, this paper proposes a two-dimensional satellite navigation positioning method, which uses non-orthogonal double LCX (Leaky CoaXial cable) to cover indoor space. In response to the characteristic of rectangular room, this paper places two LCX cables in a non-orthogonal manner. The multi-channel satellite navigation signals generated by the satellite navigation simulator simultaneously excite the four ends of the double LCX, then the double LCX radiates the satellite navigation signals more evenly towards the rectangular area. After the GNSS chip in an Android phone receives signals, Android phone generates $\log$ files. By calculating relevant parameters in the $\log$ files, the pseudorange observations and satellite position information are obtained, and then this paper combines the two-dimensional positioning algorithm of pseudorange difference between satellites to calculate the user’s position. The results show that the proposed method achieves meter level positioning accuracy and reaches the level of pseudorange positioning.