Complex sentence: Westinghouse's engineering team won this competition by having a programmable 18-bit computer whose software could be modified before each mission, and for multiplexing a Beyond The Horizon (BTH) mode that could complement the pulse-Doppler radar mode.
Split into simpler sentences: Westinghouse's engineering team won this competition by using a programmable 18-bit computer whose software could be modified before each mission. This radar also multiplexed a Beyond The Horizon (BTH) pulse mode that could complement the pulse-Doppler radar mode.