In February, Planet's 88 Dove satellites travelled on the PSLV-C37 as part of ISRO's record-breaking launch of 104 satellites.
The four Dove satellites on the upcoming launch are tech demos responsible for testing improvements to several of the satellite subsystems, including camera technology, thermal control, and altitude determination & control system, Planet Labs Inc said in a statement.
The company, founded in 2010, said it launches tech demo satellites several times a year to ensure they are using the latest and most advanced technology. These advancements are then incorporated into future operational fleet.
The company operates a fleet of earth-imaging satellites, collecting a massive amount of information about the planet.
"We have a rich history with Planet and we are proud to be a reliable launch partner that they can count on for consistent and timely launches," Rakesh S, chairman and managing director, Antrix, was quoted as saying in the statement.
"The Planet's appetite for launch capacity is impressive and we're excited that the PSLV continues to meet their needs," he said.