These secondary particles can be picked up by the radio antennas, which lets researchers calculate the trajectory of the initial neutrinos and trace them back to their source.

[3] The giant radio detector array would comprise 200,000 low-cost antennas in groups of 10,000 spread out over nearly 200,000 square kilometres (77,000 sq mi) at different locations around the world.

Construction, installation and networking the 200,000 antennae, would cost approximately US$226 million,[1] excluding the price for renting the land and manpower.

[3] The short-lived tau decays in the atmosphere generates an EAS that emits measurable electromagnetic emissions up to frequencies of hundreds of MHz.

[3] Each individual antenna is a simple Bow-tie design, featuring 3 perpendicular bows with an additional vertical arm to sample all three polarization directions.

Because GRANDProto300 will not be large enough to detect cosmogenic neutrinos, the viability will be tested using instead extensive air showers initiated by very inclined cosmic rays, thus providing an opportunity to do cosmic-ray science.