HIGH INTEGRITY RADIO ALTIMETER
First Claim
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1. A radio altimeter having a high level of integrity, comprising:
- a processing path configured to process a return signal received from a receive antenna using a first modulation technique; and
a monitoring path configured to process the return signal received from the receive antenna using a second modulation technique.
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Abstract
A radio altimeter having a high level of integrity is presented. The radio altimeter includes a processing path configured to process a return signal received from a receive antenna using a first modulation technique and a monitoring path configured to process the return signal received from the receive antenna using a second modulation technique.
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Citations
17 Claims
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1. A radio altimeter having a high level of integrity, comprising:
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a processing path configured to process a return signal received from a receive antenna using a first modulation technique; and a monitoring path configured to process the return signal received from the receive antenna using a second modulation technique. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of providing a high level of integrity to an altitude determination, the method comprising:
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modulating a signal sent over a first portion of a processing path in a radio altimeter according to a first modulation technique and a second modulation technique; transmitting the modulated signal from a transmit antenna; modulating a local oscillator signal sent to the processing path in the radio altimeter to extract the first modulation signal; modulating a local oscillator signal sent to the monitoring path in the radio altimeter to extract the second modulation signal. - View Dependent Claims (12, 13, 14)
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15. A radio altimeter system comprising
a first radio altimeter positioned in an aircraft; - and
a second radio altimeter positioned in the aircraft, each radio altimeter including; a processing path configured to process a return signal received from a receive antenna using a first modulation technique to generate a first altitude; and a monitoring path configured to process the return signal using a second modulation technique to generate a second altitude. - View Dependent Claims (16, 17)
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Specification