Engineering topics
Publications and source records attributed to Easterling, M..
RF carrier uses two receiver systems to increase signal-to-noise ratio and sensitivity. Signals separately processed are coherently combined at summing junction for improved reception of marginal high-rate signals frequently lost to system, atmosphere, and galactic noises. Two receivers improve ratio by 2.7 dB; improvement is made by arraying more receiver systems.
The structure of spacecraft tracking radar, and range and Doppler measurements, are discussed. Ranging can be used in conjunction with Doppler to determine the total number of charged particles on the radio path. Ranging can also be employed as the primary data type in determining certain kinds of orbits. The basic configuration of the ranging and Doppler system is considered. Inherent limitations on its accuracy with respect to the oscillator, transponder, ground equipment, signal to noise ratio, and general operation are noted.
Ground stations in NASA/JPL Deep Space Network for tracking and data acquisition support of unmanned lunar and planetary spacecraft missions
Interplanetary space effects on S band telecommunications
Interplanetary medium influence on S band telecommunication studied by radar astronomy
Interplanetary medium and S-band telecommunications obtained from tracking data from Mariner II and Mariner IV spacecraft
Methods for obtaining velocity and range information from continuous wave radars
Continous wave radar application for obtaining velocity and range information on single targets at large distances
Effect of interplanetary medium on S-band telecommunications
Skin tracking radar experiment involving the courier satellite