Development of a High Resolution Spectrometer for Measuring the Near-Earth RFI Environment: The First Auto-Correlator in Space

by Namir E. Kassim, Naval Research Lab, Washington, United States,
Kurt W. Weiler, Naval Research Lab, Washington, United States,
Andrew W. Clegg, Naval Research Lab, Washington, United States,

Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV


A detailed description of the near-Earth RFI (radio frequency interference environment in the 0.5 - 16.5 MHz range is required before low frequency arrays can be designed and implemented for earth orbit and the moon to open this last window of the electromagnetic spectrum to astrophysics. Here we describe the current plan for the design and prototype construction of the critical correlator subsystems; the high resolution 4096 channel autocorrelator, the control subsystem, and the analogue RF subsystem. OHFRIM will demonstrate new technology and capability for space-based radio frequency spectrometers at all frequencies and perform the RFI survey necessary before proceeding with the development of space and lunar based synthesis arrays at low radio astronomy frequencies.

Subject Headings: Space exploration | Measuring instruments | Astronomy | Space colonies | Moon | Hydraulic design | Channels (waterway)

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