Weather radar system and method for detecting a high altitude crystal condition using two or more types of radar signals
First Claim
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1. An aircraft hazard warning system, comprising:
- a processing system associated with an active radar system configured to detect a high altitude ice crystal (HAIC) or high altitude ice crystal cloud (HAIC2) condition using at least two types of radar signals, wherein a first type of radar return and a second type of radar return are processed to;
1. determine a size of particles in a high altitude region for detecting at least one of the HAIC or HAIC2 condition where a larger size indicates the at least one of the HAIC or HAIC2 condition;
or 2. determine a shape of the particles for detecting the at least one of the HAIC or HAIC2 condition where a less spherical shape indicates the at least one of the HAIC or HAIC2 condition, wherein the processing system causes a display to provide at least one of a HAIC or HAIC2 warning in response to detection of the at least one of the HAIC or HAIC2 condition;
a downconverter;
a receiver;
an antenna system comprising an X band antenna having first elements for a first polarization signal in an X band and second elements for a second polarization signal in the X band and a W band antenna for a signal in the W band, the W band antenna being disposed in a face of the X band antenna;
a duplexer, wherein a first path and a second path is disposed between the downconverter and the duplexer, wherein the first path is for the first type of the return from a first type of radar signal of the two types of radar signals and the second path is for the second type of return from a second type radar signal of the two types of radar signals, wherein the first type of radar signal is the first polarization signal in the X band and the second type of radar signal is the second polarization signal in the X band or the first type of radar signal is in the X band and the second type of radar signal is the signal in the W band.
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Abstract
The hazard warning system that included processing system for detecting a high altitude ice crystal (HAIC) condition. The aircraft warning system can use at least two types of radar returns to detect the HAIC condition. Warnings of high altitude ice crystal conditions can allow an aircraft to avoid threats posed by HAIC conditions including damage to aircraft equipment and engines.
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Citations
20 Claims
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1. An aircraft hazard warning system, comprising:
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a processing system associated with an active radar system configured to detect a high altitude ice crystal (HAIC) or high altitude ice crystal cloud (HAIC2) condition using at least two types of radar signals, wherein a first type of radar return and a second type of radar return are processed to;
1. determine a size of particles in a high altitude region for detecting at least one of the HAIC or HAIC2 condition where a larger size indicates the at least one of the HAIC or HAIC2 condition;
or 2. determine a shape of the particles for detecting the at least one of the HAIC or HAIC2 condition where a less spherical shape indicates the at least one of the HAIC or HAIC2 condition, wherein the processing system causes a display to provide at least one of a HAIC or HAIC2 warning in response to detection of the at least one of the HAIC or HAIC2 condition;a downconverter; a receiver; an antenna system comprising an X band antenna having first elements for a first polarization signal in an X band and second elements for a second polarization signal in the X band and a W band antenna for a signal in the W band, the W band antenna being disposed in a face of the X band antenna; a duplexer, wherein a first path and a second path is disposed between the downconverter and the duplexer, wherein the first path is for the first type of the return from a first type of radar signal of the two types of radar signals and the second path is for the second type of return from a second type radar signal of the two types of radar signals, wherein the first type of radar signal is the first polarization signal in the X band and the second type of radar signal is the second polarization signal in the X band or the first type of radar signal is in the X band and the second type of radar signal is the signal in the W band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of detecting a high altitude ice crystal (HAIC) condition or a high altitude ice crystal cloud (HAIC2) condition on an aircraft using an electronic processor associated with an active radar system, the method comprising:
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providing a first type of radar signal to an antenna system, the antenna system comprising an X band antenna having first elements for a first polarization signal in an X band and second elements for a second polarization signal in the X band and a W band antenna for a signal in the W band, the W band antenna being disposed in a face of the X band antenna; providing a second type of radar signal to the antenna system; receiving a first type of radar return from the first type of radar signal on a first receive path and a second type of radar return from the second radar signal on a second receive path; processing the first type of radar return and the second type of radar return to determine at least one of HAIC or HAIC2 condition, wherein the first type of radar return and the second type of radar return are processed to;
1. determine a size of particles in a high altitude region for detecting the HAIC or HAIC2 condition where a larger size indicates at least one the HAIC or HAIC2 condition;
or 2. determine a shape of the particles for detecting at least one of the HAIC or HAIC2 condition where a less spherical shape indicates the at least one of the HAIC or HAIC2 condition; anddisplaying at least one of a HAIC or HAIC2 warning in response to detection of the at least one of the HAIC or HAIC2 condition. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An active aircraft weather radar system, comprising:
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a display; a radar antenna for receiving two types of radar return signals; and means for determining a high altitude ice crystal (HAIC) condition in response to at least the two types of radar return signals, wherein the two types of radar return signals are processed to;
1. determine a size of particles in a high altitude region for detecting at least one of the HAIC condition where a larger size indicates the HAIC condition;
or 2. determine a shape of the particles for detecting the HAIC condition where a less spherical shape indicates the HAIC condition, wherein the processing system causes the display to provide a HAIC warning in response to detection of the HAIC condition;a downconverter; a receiver; an antenna system comprising an X band antenna having first elements for a first polarization signal in an X band and second elements for a second polarization signal in the X band and a W band antenna for a signal in the W band, the W band antenna being disposed in a face of the X band antenna; and a duplexer, wherein a first path and a second path is disposed between the downconverter and the duplexer, wherein the first path is for a first type of return of the two types of radar return signals and the second path is for a second type of return of the two types of radar return signals, wherein the first type of radar signal is the first polarization signal in the X band and the second type of radar signal is the second polarization signal in the X band or the first type of radar signal is in the X band and the second type of radar signal is the signal in the W band. - View Dependent Claims (18, 19, 20)
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Specification