Laser Communication: Bringing more information to Spacecraft

A spacecraft can gather information, but how does research continue if scientists do not receive the results? The process itself can limit the value of a mission since the researchers do not get all of the data. Laser communications are on the rise as a way to push more information to a spacecraft with light.

The Process of Laser Communication

According to NASA, “Optical communications” uses light to transmit the information through space instead of the usual radio-frequency methods. It is possible that the process would not be any faster, but there is an increase in the amount of data that can be sent.

There is a big difference between the movement of the signal and the volume of information sent. The confusion is understandable because the two terms are connected.

Increasing Amounts of Data Sent to Spacecrafts

The process could allow scientists to continue their research after the flight since they would receive more information. It might even give more details if the spacecraft gathered images of the findings.

It is easy to think of an example where “more” could be better when it comes to science. The mission would continue to hold value even if the craft could not send data for a long time.

NASA points out that the increase would be suitable for more “data-intensive” missions. They also mention that “reduced mass, size, and power requirements” would help spacecrafts.

The Need for More Accuracy

There is a limit to how much a laser can do. These beams are very narrow, which puts the accuracy in question. If the spacecraft misses the small beam on the receiving end by a tiny amount, there is no connection. According to NASA, there is an issue with “cloud cover” interfering with the link as well.

It is hard to say if this technology would be useful without a thorough evaluation of the mission. A high amount of data is not helpful if the signal gets lost, but scientists would know to bring the necessary equipment.

Conclusion

Laser communications would be able to send more data to spacecrafts. The process is important for its ability to increase the value of missions. The volume of information can make a big difference if the link is strong enough.

Source

NASA . “ Optical Communications .” NASA , https://www.nasa.gov/technology/space-comms/optical-communications-overview/.