Which component computes the HEIGHT DATA for each target return in the AN/TPS-75 Aircraft Control and Warning System?

The component responsible for computing the HEIGHT DATA for each target return in the AN/TPS-75 Aircraft Control and Warning System is the post processor. This component plays a crucial role in processing the raw data received from the radar and transforming it into useful information. The post processor analyzes the returned signals, distinguishes between different targets, and calculates the height of those targets above sea level.

The post processing stage is essential because it integrates various types of data, enhances the signal quality, and applies algorithms that help in accurately determining the height, speed, and trajectory of potential aerial threats. It ensures that the data presented to operators is reliable and can be used effectively for air defense operations.

Other components like the intermediate frequency receivers, digital height readout panel, and external modems have specific functions that support the overall operation of the system, but they do not perform the actual computation of height data. For instance, intermediate frequency receivers handle the reception of signals, while the digital height readout panel provides a user interface for displaying height data rather than computing it. External modems facilitate communication but are not involved in the height calculation process. Thus, the post processor is the key component for this particular function.