Abstract: The present invention relates to a method and apparatus used to calculate at least one velocity component for a target within the region. The invention employs an energy source which is activated using an activation system in a cyclic pattern with a selected source frequency. A receiver is also employed in conjunction with a shielding system where this shielding system is configured to block the sensing of reflected energy from the target in a cyclic pattern with a selected receiver frequency. The invention operates through measuring a frequency change in the source frequency of the energy source signal when received by the receiver and determines a velocity component for a target based on a measured frequency change for a known direction of travel. The invention may also be extended to provide a two or three dimensional velocity vector through the addition of further energy sources.

Abstract: The present invention relates to a method and apparatus used to calculate at least one velocity component for a target within the region. The invention employs an energy source which is activated using an activation system in a cyclic pattern with a selected source frequency. A receiver is also employed in conjunction with a shielding system where this shielding system is configured to block the sensing of reflected energy from the target in a cyclic pattern with a selected receiver frequency. The invention operates through measuring a frequency change in the source frequency of the energy source signal when received by the receiver and determines a velocity component for a target based on a measured frequency change for a known direction of travel. The invention may also be extended to provide a two or three dimensional velocity vector through the addition of further energy sources.

Abstract: A method of herd management which includes providing each member of the herd with a device (eg; an intra vaginal device) capable of identifying the member, of sensing at least one physiological condition of the member of the herd and communicating with other such devices and/or a base station. With such communication the proximity of devices each other allows groupings to be determined such as a grouping indicative of behavioural oestrus. With such devices it is possible by monitoring groupings of the animal to determine those in oestrus and to have the device administer appropriate active ingredients to some of the animals of the herd.