Abstract:
PURPOSE: A method and apparatus for eliminating a channel phase error of a direction finding receiver are provided to reduce time required for eliminating a phase error by making a phase error table and a local oscillator control table. CONSTITUTION: A direction finding receiver obtains a signal arrival angle of a wireless signal source from the phase difference between receiving antennas and obtains a channel phase difference through the signal arrival angle(S110). The direction finding receiver refers to a receiving frequency band of an ES(Electronic Support) system and generates a phase error table and a local oscillator control table(S120). The direction finding receiver stores a previous channel phase difference in the phase error table and checks the flag of the phase error table. The direction finding receiver stores the address of the phase error table in the local oscillator control table(S130). The direction finding receiver controls a local oscillator by using the local oscillator control table and stores a channel phase error in the phase error table(S140). The direction finding receiver eliminates phase difference components included in the channel phase difference of a previous PDW(Pulse Description Word) table and stores the phase difference components in the PDW table(S150).
Abstract:
PURPOSE: A method for recognizing control device to compatibly using single board computer(SBC) is provided to integrate managing object by one SBC even in single or multi embedded system using various control devices. CONSTITUTION: A method for recognizing control device to compatibly using single board computer(SBC) comprises: a step(S42) of setting microswitch in order to operate corresponding embedded software of SBC; a step(S43) of operating OS(operating system) after power is applied to a control device; a step(S44) of identifying information about the control device and information about weapon system from a state value by a processing unit of the SBC; and a step(S45) of loading an embedded software corresponding to the identified ID of the control device by the processing unit.