A method performed in a positioning system, comprising: (a) receiving (S100), at a receiver, signal data from one or more remote sources; (b) measuring or assuming (S102) a movement of the receiver, wherein assuming a movement of the receiver is based on patterns of receiver movement in previous epochs; (c) determining (S104) a first direction, wherein signals received at the receiver along the first direction are desired to be enhanced; (d) determining (S104) a second direction, wherein signals received at the receiver along the second direction are desired to be suppressed; (e) obtaining (S106) first and second phasor sequences indicative of the measured or assumed movement of the receiver in the first and second directions respectively, the first and second phasor sequences each comprising one or more phasors which include an amplitude and an angle; (f) generating (S107) a third phasor sequence based on a weighted combination of the first and second phasor sequences in accordance with the determined first and second directions, wherein the third phasor sequence is generated using an estimation process based on a desired gain of signals received along the first direction and a desired gain of signals received along the second direction; (g) providing a local signal; and (h) providing (S108) a correlation signal using the third phasor sequence, wherein providing the correlation signal comprises correlating the local signal with the received signal data, and combining the third phasor sequence with at least one of the local signal, received signal data, and the result of the correlation, such that a signal received along the second direction is suppressed relative to a signal received along the first direction. (a) receiving (S100), at a receiver, signal data from one or more remote sources; (b) measuring or assuming (S102) a movement of the receiver, wherein assuming a movement of the receiver is based on patterns of receiver movement in previous epochs; (c) determining (S104) a first direction, wherein signals received at the receiver along the first direction are desired to be enhanced; (d) determining (S104) a second direction, wherein signals received at the receiver along the second direction are desired to be suppressed; (e) obtaining (S106) first and second phasor sequences indicative of the measured or assumed movement of the receiver in the first and second directions respectively, the first and second phasor sequences each comprising one or more phasors which include an amplitude and an angle; (f) generating (S107) a third phasor sequence based on a weighted combination of the first and second phasor sequences in accordance with the determined first and second directions, wherein the third phasor sequence is generated using an estimation process based on a desired gain of signals received along the first direction and a desired gain of signals received along the second direction; (g) providing a local signal; and (h) providing (S108) a correlation signal using the third phasor sequence, wherein providing the correlation signal comprises correlating the local signal with the received signal data, and combining the third phasor sequence with at least one of the local signal, received signal data, and the result of the correlation, such that a signal received along the second direction is suppressed relative to a signal received along the first direction. <EOS>