A man wearing a face mask is seen in front of a radar tower at Hongqiao International Airport in Shanghai, following the coronavirus disease (COVID-19) outbreak, China May 19, 2020. REUTERS/Aly Song

Radar sensors are shown own a Hyundai electric vehicle as self driving company Pony.ai begins to provide autonomous electric vehicles to deliver packages from local e-commerce platform Yamibuy during the outbreak of the coronavirus disease (COVID-19) in Irvine, California, U.S., April 28, 2020. REUTERS/Mike Blake

Father Abbot Abibos turns on the radar in the wheelhouse. A boat intended as a mobile Georgian Orthodox monastery, featuring a chapel decorated with wall frescos, has been at anchor in the Dutch harbour town of Vlissingen for two years while being refurbished. The monastery expects to set sail from Vlissingen in spring, to visit Georgian communities around Europe, Vlissingen, Netherlands December 30, 2019. Picture taken December 30, 2019. REUTERS/Piroschka van de Wouw REFILE - CORRECTING NAME

A radar 75/10 of the Swiss Army is displayed during the presentation of the defence system ahead of the Refugees Forum at the United Nations, near Lake Geneva, Switzerland, December 16, 2019. REUTERS/Denis Balibouse

A radar 75/10 and a cannon 63/12 of the Swiss Army are displayed during the presentation of the defence system ahead of the Refugees Forum at the United Nations, near Lake Geneva, Switzerland, December 16, 2019. REUTERS/Denis Balibouse

A radar 75/10 and a cannon 63/12 of the Swiss Army are displayed during the presentation of the defence system ahead of the Refugees Forum at the United Nations, near Lake Geneva, Switzerland, December 16, 2019. REUTERS/Denis Balibouse

A radar 75/10 and a cannon 63/12 of the Swiss Army are displayed during the presentation of the defence system ahead of the Refugees Forum at the United Nations, near Lake Geneva, Switzerland, December 16, 2019. REUTERS/Denis Balibouse

A damaged traffic speed camera is seen in Nice, France, November 4, 2019. REUTERS/Eric Gaillard

An airplane flies past a newly installed "noise radar", a measuring device that can precisely measure and locate sounds from a moving vehicles as well as register their licence plates at Villeneuve-le-Roi, a town next to Paris airport Orly, France, August 30, 2019. REUTERS/Charles Platiau

A newly installed "noise radar", a measuring device that can precisely measure and locate sounds from a moving vehicles as well as register their licence plates, is seen at Villeneuve-le-Roi, a town next to Paris airport Orly, France, August 30, 2019. REUTERS/Charles Platiau

A newly installed "noise radar", a measuring device that can precisely measure and locate sounds from a moving vehicles as well as register their licence plates, is seen at Villeneuve-le-Roi, a town next to Paris airport Orly, France, August 30, 2019. REUTERS/Charles Platiau

An airplane flies past a newly installed "noise radar", a measuring device that can precisely measure and locate sounds from a moving vehicles as well as register their licence plates at Villeneuve-le-Roi, a town next to Paris airport Orly, France, August 30, 2019. REUTERS/Charles Platiau

An airplane flies past a newly installed "noise radar", a measuring device that can precisely measure and locate sounds from a moving vehicles as well as register their licence plates at Villeneuve-le-Roi, a town next to Paris airport Orly, France, August 30, 2019. REUTERS/Charles Platiau

A radar is seen on the monitoring tower of USS Boxer (LHD-4) in the Arabian Sea off Oman July 16, 2019. Picture taken July 16, 2019. REUTERS/Ahmed Jadallah

Visitors inspect constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine June 2, 2019. Picture taken June 2, 2019. REUTERS/Valentyn Ogirenko

A radar tower is seen on the beach of Sangatte, near Calais, France February 19, 2019. REUTERS/Benoit Tessier

German Chancellor Angela Merkel stands in front of a large screen introducing NEC's satellite-mounted radar system for monitoring urban infrastructure and disaster prevention as she visits NEC Future Creation Hub at the headquarters of NEC in Tokyo, Japan, February 5, 2019. REUTERS/Kim Kyung-hoon

German Chancellor Angela Merkel stands in front of a large screen introducing NEC's satellite-mounted radar system for monitoring urban infrastructure and disaster prevention as she visits NEC Future Creation Hub at the headquarters of NEC in Tokyo, Japan, February 5, 2019. REUTERS/Kim Kyung-hoon

German Chancellor Angela Merkel stands in front of a large screen introducing NEC's satellite-mounted radar system for monitoring urban infrastructure and disaster prevention as she visits NEC Future Creation Hub at the headquarters of NEC in Tokyo, Japan, February 5, 2019. REUTERS/Kim Kyung-hoon

German Chancellor Angela Merkel stands near a large screen introducing NEC's satellite-mounted radar system for monitoring urban infrastructure and disaster prevention as she visits NEC Future Creation Hub at the headquarters of NEC in Tokyo, Japan, February 5, 2019. REUTERS/Kim Kyung-hoon

German Chancellor Angela Merkel stands in front of a large screen introducing NEC's satellite-mounted radar system for monitoring urban infrastructure and disaster prevention as she visits NEC Future Creation Hub at the headquarters of NEC in Tokyo, Japan, February 5, 2019. REUTERS/Kim Kyung-hoon

German Chancellor Angela Merkel stands in front of a large screen introducing NEC's satellite-mounted radar system for monitoring urban infrastructure and disaster prevention as she visits NEC Future Creation Hub at the headquarters of NEC in Tokyo, Japan, February 5, 2019. REUTERS/Kim Kyung-hoon

A traffic speed camera is covered with white painting to block its operation in Nice, France, January 11, 2019. REUTERS/Eric Gaillard

A traffic speed camera is covered by a plastic bag and a tape reading "under technical maintenance" after it was previously vandalised to block its operation in Paris, France, January 11, 2019. REUTERS/Benoit Tessier

A traffic speed camera is covered by a plastic bag and a tape reading "under technical maintenance" after it was previously vandalised to block its operation in Paris, France, January 11, 2019. REUTERS/Benoit Tessier

A traffic speed camera is covered by a plastic bag and a tape reading "under technical maintenance" after it was previously vandalised to block its operation in Paris, France, January 11, 2019. REUTERS/Benoit Tessier

Visitors inspect constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine November 22, 2018. Picture taken November 22, 2018. REUTERS/Gleb Garanich

Visitors feed a dog as they inspect constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine November 22, 2018. Picture taken November 22, 2018. REUTERS/Gleb Garanich

Constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" are seen near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine November 22, 2018. Picture taken November 22, 2018. REUTERS/Gleb Garanich

Visitors inspect constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine November 22, 2018. Picture taken November 22, 2018. REUTERS/Gleb Garanich

Constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" are seen near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine November 22, 2018. Picture taken November 22, 2018. REUTERS/Gleb Garanich

Visitors inspect constructions of a former Soviet Union over-the-horizon (OTH) radar system "Duga" near the Chernobyl Nuclear Power Plant, near Chernobyl, Ukraine November 22, 2018. Picture taken November 22, 2018. REUTERS/Gleb Garanich

An Airbus A330-800 aircraft flies during a flight event presentation in Colomiers near Toulouse, France, November 6, 2018. REUTERS/Regis Duvignau

Aluminium radar capture fishing gear markers are seen on a fishing vessel in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

Aluminium radar capture fishing gear markers are seen on a fishing vessel in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

Aluminium radar capture fishing gear markers are seen on a fishing vessel in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

Chief engineer Savvas Kourepinis looks at the radar as ship's cook Mariona Hidalgo Rodriguez sleeps on the bridge as the NGO Proactiva Open Arms rescue boat Astral sails in the Mediterranean Sea, October 3, 2018. REUTERS/Alkis Konstantinidis

Captain Riccardo Gatti looks at the radar on the bridge of the NGO Proactiva Open Arms rescue boat Astral as it sails in the Mediterranean Sea, October 3, 2018. REUTERS/Alkis Konstantinidis

Safety officer Brian Rougeux carries a fiberglass shell as he works to assemble a protective radar dome at the research camp above the Helheim glacier near Tasiilaq, Greenland, June 23, 2018. REUTERS/Lucas Jackson

Oceanographer David Holland inspects a newly built radar dome at the research camp above the Helheim glacier near Tasiilaq, Greenland, June 22, 2018. REUTERS/Lucas Jackson

Safety officer Brian Rougeux works to assemble a radar dome while working at the research camp above the Helheim glacier near Tasiilaq, Greenland, June 20, 2018. REUTERS/Lucas Jackson

Radar Engineer, David Austerberry, monitors data collection inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 13, 2018. REUTERS/Lucas Jackson

Principal Investigator, Josh Willis (L), watches as radar engineers, Ron Muellerschoen and Tim Miller (R) monitor data collection inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 12, 2018. REUTERS/Lucas Jackson

Radar Engineer, Tim Miller, monitors data collection inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 12, 2018. REUTERS/Lucas Jackson

Radar Engineer, David Austerberry, monitors data collection inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 13, 2018. REUTERS/Lucas Jackson

Radar Engineer David Austerberry monitors flight data from inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 13, 2018. REUTERS/Lucas Jackson

Radar Engineer Tim Miller monitors data from inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 12, 2018. REUTERS/Lucas Jackson

Radar engineer Ron Muellerschoen (R) takes a photograph out a window as Tim Miller monitors data collection inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 12, 2018. REUTERS/Lucas Jackson

Pilot in Command Tom Parent inspects the NASA Jet Propulsion Laboratory's uninhabited aerial vehicle synthetic aperture radar pod hung on a NASA Gulfstream III during a pre-flight inspection of the aircraft before a flight to support the Oceans Melting Greenland (OMG) research mission at Keflavik International Airport, Iceland, March 13, 2018. REUTERS/Lucas Jackson

Airplane Mechanic, David Fuller, walks towards a NASA Gulfstream III equipped with a NASA Jet Propulsion Laboratory's uninhabited aerial vehicle synthetic aperture radar pod for a pre-flight inspection before a flight to support the Oceans Melting Greenland (OMG) research mission at Keflavik International Airport, Iceland, March 12, 2018. REUTERS/Lucas Jackson

Radar Engineer, Ron Muellerschoen, monitors data collection inside of a NASA Gulfstream III, while measuring loss of the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, above Greenland, March 12, 2018. REUTERS/Lucas Jackson

Radar Engineer, Ron Muellerschoen, monitors data collection inside a NASA Gulfstream III flying above Greenland to measure loss to the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, March 12, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Radar Engineer Ron Muellerschoen (L), Radar Engineer Tim Miller (C) and Pilot in Command Tom Parent discuss issues with an autopilot system while flying inside a NASA Gulfstream III above Greenland to measure loss to the country's ice sheet as part of the Oceans Melting Greenland (OMG) research mission, March 13, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Safety officer Brian Rougeux carries a piece of a radar dome while working in a science camp on the side of the Helheim glacier near Tasiilaq, Greenland, June 20, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Safety officer Brian Rougeux works with student Febin Magar to assemble a radar dome while working in a science camp on the side of the Helheim glacier near Tasiilaq, Greenland, June 20, 2018. REUTERS/Lucas Jackson SEARCH "JACKSON GREENLAND" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A Fench gendarme uses a speed radar gun to check cars and motorcycles speed during a road safety operation on the roads of the Cote d'Azur in Nice, France August 24, 2018. REUTERS/Eric Gaillard

A Fench gendarme uses a speed radar gun to check cars and motorcycles speed during a road safety operation on the roads of the Cote d'Azur in Nice, France August 24, 2018. REUTERS/Eric Gaillard

A Fench gendarme uses a speed radar gun to check cars and motorcycles speed during a road safety operation on the roads of the Cote d'Azur in Nice, France August 24, 2018. REUTERS/Eric Gaillard

A Fench gendarme uses a speed radar gun to check cars and motorcycles speed during a road safety operation on the roads of the Cote d'Azur in Nice, France August 24, 2018. REUTERS/Eric Gaillard

A Fench gendarme uses a speed radar gun to check cars and motorcycles speed during a road safety operation on the roads of the Cote d'Azur in Nice, France August 24, 2018. REUTERS/Eric Gaillard