초록 ▼

A system and method for adapting weather radar gain is disclosed. The system and method includes estimating a freezing altitude. The system and method also includes determining, based on the freezing-altitude estimate, the altitude of more than one atmospheric layer. The system and method further in

A system and method for adapting weather radar gain is disclosed. The system and method includes estimating a freezing altitude. The system and method also includes determining, based on the freezing-altitude estimate, the altitude of more than one atmospheric layer. The system and method further includes determining the proportion of a radar beam sample in each atmospheric layer and adjusting the radar gain, based on the proportion.

대표청구항 ▼

1. A method for adapting weather radar gain, comprising: estimating a freezing altitude; determining, based on the freezing altitude estimate, an altitude of more than one atmospheric layer; determining a proportion of a radar beam sample in each atmospheric layer; and adjusting the radar

1. A method for adapting weather radar gain, comprising: estimating a freezing altitude; determining, based on the freezing altitude estimate, an altitude of more than one atmospheric layer; determining a proportion of a radar beam sample in each atmospheric layer; and adjusting the radar gain, based on the proportion. 2. The method of claim 1, further comprising: measuring a radar's geographic location; and adjusting the radar gain based on the geographic locations. 3. The method of claim 1, further comprising: determining a time of year; and adjusting the radar gain based on the time of year. 4. The method of claim 1, further comprising: determining a time of day; and adjusting the radar gain based on the time of day. 5. The method of claim 1, further comprising: determining a portion of a radar beam sample above the freezing altitude. 6. An airborne weather radar system, comprising: a radar antenna on board an aircraft; an adjustable gain circuit for an electromagnetic signal sent via the radar antenna, the adjustable gain circuit coupled to the radar antenna; and a computational circuit configured to estimates a freezing altitude, the computational circuit coupled to the radar antenna and the adjustable gain circuit; wherein the adjustable gain is adjusted based on weather sample altitude and temperature. 7. The airborne weather system of claim 6, wherein the adjustable gain Is adjusted based on geographical location of the aircraft.8. The airbome radar system of claim 6, wherein the adjustable gain is adjusted based on time of year.9. The airborne radar system of claim 6, wherein the adjustable gain is adjusted based on a time of day.10. The airborne radar system of claim 6, wherein the computational circuit is configured to determine an altitude range of three different atmospheric layers.11. The airborne radar system of claim 10, wherein the computational circuit is configured to compute portions of a radar sample that are in the atmospheric layers.12. The airborne radar system of claim 6, wherein the freezing altitude is calculated from a model selected from adlabatic lapse rate and a saturated lapse rate.13. A method of adapting radar gains for a weather radar, comprising: measuring a temperature; determining a freezing altitude; measuring an altitude; and computing a radar gain based on the temperature and altitude. 14. The method of claim 13, further comprising: measuring an aircraft's geographic location; and computing the radar gain based on the geographic location. 15. The method of claim 13, further comprising: determine a time of year; and computing the radar gain based on the time of year. 16. The method of claim 13, further comprising: determine a time of day; and computing the radar gain based on the time of day. 17. The method of claim 13, further comprising: determining a portion of a radar beam sample above the freezing altitude. 18. The method of claim 13, further comprising: whether the radar is in a lookup mode or a look down mode.