What inspired bats to invent radar?

Bats are nocturnal, usually in groups, and the number can reach one million. Some species in temperate regions migrate before winter, mainly inhabiting caves, tree holes and forests. They breed once a year, and they are pregnant for about 2-6 months, giving birth to one fetus at a time.

Many bats in tropical and subtropical regions feed on the fruits of plants. They eat a lot.

About 70% bats prey on insects, and they usually send out ultrasonic waves to explore their prey, mostly in the air. Bats are very agile in catching prey. Through high-speed photography, it is found that some bats prey directly with their mouths.

Some use wings to intercept prey into their mouths, and some use tail membranes to scoop worms into their mouths like spoons. There are many ways to hunt. Bats eat a lot of insects and can eat about one third of the dead insects every night.

Extended data:

Radar uses the reflection characteristics of objects to detect aircraft, missiles, ships, vehicles, weapons, bridges, residential areas and other targets. , and determine the location of the target, including distance, altitude and azimuth.

The transmitted radio wave has the same frequency as the echo and is a fixed target; The difference is the activity target.

The echo frequency is higher than the transmission frequency, which means that the target is close to the radar side; Low is the opposite, indicating that the target is moving away from the radar. The faster the target moves, the greater the frequency change. This is the general principle of radar detection.