Gemini Range and Range Rate Measuring System

To complete the terminal phase of a space rendezvous mission, it is essential that accurate indications of target vehicle range and relative range rate be presented to the astronauts commanding the chaser vehicle. The indicator characteristics and the method of data presentation assume prime importance in compliance with the above. Therefore, a discussion is given of the logical development and function of the indicator. Having established the indicator format the discussion proceeds with a description of the mechanization of the range and range rate circuitry incorporated in the GEMINI Rendezvous Radar. In this section, details are given which describe the methods by which data, extracted from the received signals, are processed in analog form suitable for application to the indicator.