An apparatus, comprising: a transceiver configured to transmit and receive avionics signals at a host vehicle; and an interface configured to communicate with an array of a plurality of avionics receivers (110, 120, 130), wherein the avionics receivers (110, 120, 130) are configured to receive the avionics signals at the host vehicle, wherein the avionics receivers (110, 120, 130) each further comprise a respective antenna housed with the corresponding avionics receiver (110, 120, 130), wherein the apparatus further comprises: a processor configured to determine a relative bearing of a target vehicle to the host vehicle based on at least one signal characteristic of the received avionics signal as received at the transceiver and at least one signal characteristic of each of the received avionics signals as received at the plurality of avionics receivers (110, 120, 130), and wherein the apparatus is characterized by further comprising: memory configured with relative geometry of the transceiver and the array of receivers (110, 120, 130), wherein the processor is configured to determine the relative bearing based on the relative geometry, and wherein the apparatus further comprises a clock configured to be in synchronization with clocks of the array of receivers (110, 120, 130), wherein the determined relative bearing is based on synchronization between the clock and the clocks. a transceiver configured to transmit and receive avionics signals at a host vehicle; and an interface configured to communicate with an array of a plurality of avionics receivers (110, 120, 130), wherein the avionics receivers (110, 120, 130) are configured to receive the avionics signals at the host vehicle, wherein the avionics receivers (110, 120, 130) each further comprise a respective antenna housed with the corresponding avionics receiver (110, 120, 130), wherein the apparatus further comprises: a processor configured to determine a relative bearing of a target vehicle to the host vehicle based on at least one signal characteristic of the received avionics signal as received at the transceiver and at least one signal characteristic of each of the received avionics signals as received at the plurality of avionics receivers (110, 120, 130), and wherein the apparatus is characterized by further comprising: memory configured with relative geometry of the transceiver and the array of receivers (110, 120, 130), wherein the processor is configured to determine the relative bearing based on the relative geometry, and wherein the apparatus further comprises a clock configured to be in synchronization with clocks of the array of receivers (110, 120, 130), wherein the determined relative bearing is based on synchronization between the clock and the clocks. the avionics receivers (110, 120, 130) each further comprise a respective antenna housed with the corresponding avionics receiver (110, 120, 130), wherein the apparatus further comprises: a processor configured to determine a relative bearing of a target vehicle to the host vehicle based on at least one signal characteristic of the received avionics signal as received at the transceiver and at least one signal characteristic of each of the received avionics signals as received at the plurality of avionics receivers (110, 120, 130), and wherein the apparatus is characterized by further comprising: memory configured with relative geometry of the transceiver and the array of receivers (110, 120, 130), wherein the processor is configured to determine the relative bearing based on the relative geometry, and wherein the apparatus further comprises a clock configured to be in synchronization with clocks of the array of receivers (110, 120, 130), wherein the determined relative bearing is based on synchronization between the clock and the clocks.