Method for interferometric radar measurement
First Claim
1. An arrangement for interferometric radar measurement comprising:
- a transmitter disposed on a turnstile of a ROSAR system of a helicopter radar;
at least two assigned coherent receiving antennas having receiving channels disposed on said turnstile of said ROSAR system of a helicopter radar; and
an additional transmitting/receiving antenna disposed on said turnstile wherein said additional transmitting/receiving antenna has a narrow beam and is focused downward in elevation covering a lower range of a sight angle.
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Accused Products
Abstract
It is proposed in connection with a method for the interferometric radar measurement in conjunction with a helicopter operating in accordance with the ROSAR principle (Heli-Radar) that two coherent receiving antennas with receiving channels are associated with a transmitter of the ROSAR-system mounted on the revolving rotary cross; and that the difference (ΔR) between the two distances (R+ΔR, R) from the measured impact point P are calculated, in the manner known per se, based on the wavelength λ of the emitted radar signal and the measured phase difference of the receiving echo of the two coherent receive channels.
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Citations
6 Claims
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1. An arrangement for interferometric radar measurement comprising:
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a transmitter disposed on a turnstile of a ROSAR system of a helicopter radar;
at least two assigned coherent receiving antennas having receiving channels disposed on said turnstile of said ROSAR system of a helicopter radar; and
an additional transmitting/receiving antenna disposed on said turnstile wherein said additional transmitting/receiving antenna has a narrow beam and is focused downward in elevation covering a lower range of a sight angle. - View Dependent Claims (2, 3)
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4. A process for interferometric radar measurement comprising the steps of:
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assigning two coherent receiving antennas having receiving channels to a transmitter;
calculating a path length difference of two distances to a measured receiving point from a wave length of a transmitted radar signal and of a measured phase difference of a reception echo of both coherent receiving channels;
assigning said two coherent receiving antennas to a transmitter of a ROSAR system;
arranging said two coherent receiving antennas and said transmitter on a rotating turnstile of a radar; and
evaluating signals of an additional transmitting/receiving antenna that has a narrow beam and is for determination of said phase difference of said reception echo of both coherent receiving channels;
wherein a helicopter operating according to the ROSAR principle is used for the interferometric radar measurement. - View Dependent Claims (5, 6)
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Specification