A method for determining an angle between a mobile terminal and an anchor node, the method comprising: determining (S402) the strength of a first signal transmitted by a first antenna of the mobile terminal; determining (S404) the strength of a second signal transmitted by a second antenna of the mobile terminal, wherein the second antenna is arranged with the first antenna at a preset angle, and there is an overlap between the coverage of the first antenna and that of the second antenna due to the preset angle; determining (S406) a relative angle between the mobile terminal and the anchor node according to a linear relation of a ratio of the strength of the first signal to the strength of the second signal, wherein determining (S406) the relative angle between the mobile terminal and the anchor node according to the linear relation of the ratio of the strength of the first signal to the strength of the second signal comprises: determining, according to the strength of the first signal transmitted by the first antenna and the strength of the second signal transmitted by the second antenna, a first relative angle between the mobile terminal and the anchor node; determining, according to the signal strength of an antenna group consisting of the first antenna and the second antenna after each rotation of the mobile terminal, a second relative angle, a third relative angle and a fourth relative angle, wherein an antenna group consisting of the first antenna and the second antenna of the mobile terminal is rotated for three times, and is rotated by 90 degrees each time; and selecting, from the first relative angle, the second relative angle, the third relative angle and the fourth relative angle, a relative angle with the strongest strength of the first signal or the second signal received by the anchor node as the relative angle between the mobile terminal and the anchor node. determining (S402) the strength of a first signal transmitted by a first antenna of the mobile terminal; determining (S404) the strength of a second signal transmitted by a second antenna of the mobile terminal, wherein the second antenna is arranged with the first antenna at a preset angle, and there is an overlap between the coverage of the first antenna and that of the second antenna due to the preset angle; determining (S406) a relative angle between the mobile terminal and the anchor node according to a linear relation of a ratio of the strength of the first signal to the strength of the second signal, wherein determining (S406) the relative angle between the mobile terminal and the anchor node according to the linear relation of the ratio of the strength of the first signal to the strength of the second signal comprises: determining, according to the strength of the first signal transmitted by the first antenna and the strength of the second signal transmitted by the second antenna, a first relative angle between the mobile terminal and the anchor node; determining, according to the signal strength of an antenna group consisting of the first antenna and the second antenna after each rotation of the mobile terminal, a second relative angle, a third relative angle and a fourth relative angle, wherein an antenna group consisting of the first antenna and the second antenna of the mobile terminal is rotated for three times, and is rotated by 90 degrees each time; and selecting, from the first relative angle, the second relative angle, the third relative angle and the fourth relative angle, a relative angle with the strongest strength of the first signal or the second signal received by the anchor node as the relative angle between the mobile terminal and the anchor node. <EOS>