Welcome to ECHO’s documentation!

ECHO is a drone-based system for calibrating wide-field radio arrays seeking to probe the Epoch of Reionization (EoR). The goal is to make accurate in-situ beam maps and incorporate this data into 21cm power spectrum analysis pipelines. For more details you can read the first demonstration of ECHO paper by Jacobs et al. 2017 here

This repository contains software used to generate flight plans, collect and reduce resulting data from a calibration run.

Workflow

Analysis of data from a calibration run involves three main steps:

• Reading in transmitter position data and receiver spectrum

• Interpolating receiver spectrum to drone flight times

• Gridding data onto a healpix map

ECHO setup

Flight Path

ECHO follows a spherical shell flight pattern centered around the antenna under test as shown in the figure.

Contents:

• Installation
  • Dependencies
• Tutorial
  • Reading in transmitter position data
  • Reading in receiver spectrum
  • Matching up receiver spectrum with drone flight times
  • Matching up telescope data to drone positions
  • Gridding data
  • Analysis
• API Reference

Indices and tables

• Index

• Module Index

• Search Page