Distance measuring apparatus integrated in an aircraft landing system of the ILS type专利检索-滑翔飞行空气动力学专利检索查询-专利查询网

Distance measuring apparatus integrated in an aircraft landing system of the ILS type

阅读：774发布：2021-03-09

专利汇可以提供Distance measuring apparatus integrated in an aircraft landing system of the ILS type专利检索，专利查询，专利分析的服务。并且Distance measuring apparatus integrated in an aircraft landing system of the ILS type which utilizes the differential measuring technique wherein a deviation signal is alternately applied and suppressed to a network of lateral aerials of a glide station. The distance measuring apparatus measures the bearing angle of the approaching aircraft with respect to the glide station, and includes at the glide station a pair of lateral aerials associated with the low aerial of the glide station arranged for intermittently emitting side bands corresponding to the modulation of the glide signal at a low frequency which is sufficiently high with respect to the conventional ILS frequencies of 90 and 150 Hz, for example, 960 Hz. On board the aircraft, the distance measuring apparatus includes distance indicating devices connected to the low frequency output of a conventional ILS receiver for providing a distance indication in accordance with the variation in the degree of modulation of the 960 Hz signal received by the ILS receiver.，下面是Distance measuring apparatus integrated in an aircraft landing system of the ILS type专利的具体信息内容。

权利要求

1. Distance measuring apparatus integrated in an aircraft landing system of the ILS type utilizing the differential measuring technique wherein a deviation signal is alternately applied and suppressed to a network of lateral aerials of a glide station, the distance measuring apparatus measuring the bearing angle of the approaching aircraft with respect to the glide station when the aircraft is on the glide path and comprising at the glide station a pair of lateral aerial means operatively associated with the low aerial of the glide station and intermittently emitting sidebands corresponding to the modulation of the glide signal at a low frequency which is sufficiently high with respect to the conventional ILS frequencies of 90 and 150 Hz, and distance means connected to the low frequency output of a conventional ILS receiver on board the aircraft for providing a distance indication in accordance with the variation in the degree of modulation of the low frequency signal received by the ILS receiver.

2. Distance measuring apparatus according to claim 1, wherein the low frequency is 960 Hz.

3. Distance measuring apparatus according to claim 2, wherin the pair of lateral aerial means include two lateral aerials spaced apart by approximately 1 lambda on respective sides of the low aerial and being more directive than the low aerial.

4. Distance measuring apparatus according to claim 2, wherein the glide station includes emitter means for providing the carrier energy and first generator means for generating 90 and 150 Hz side bands, the pair of lateral aerial means including two lateral aerials, power divider means connected to the emitter means for removing a small portion of the carrier energy furnished thereby, second generator means for generating the lateral 960 Hz bands connected to the power divider means, and static switching means responsive to the first generator means for controlling the supply of the output of the second generator means to the two lateral aerials.

5. Distance measuring apparatus according to claim 4, further including means for monitoring the operation of the two lateral aerials.

6. Distance measuring apparatus according to claim 2, wherein the distance means on board the aircraft includes a 960 Hz filter means connected to the low frequency output of the ILS receiver, detector means connected to the output of the filter means for detecting at least one of a 60 Hz signal and a multiple of a 60 Hz signal and providing an output indicative thereof, measuring means for measuring the amplitude of the detected signal, and indicator means for providing a distance display of the output of the measuring means.

7. Distance measuring apparatus according to claim 6, further including validating means connected to the oUtput of the measuring means and an output of the ILS receiver for validating the output of the measuring means in accordance with the deviation current of the localizer signal of the ILS receiver, the validating means providing a validated measuring means output signal to the indicator means.

8. Distance measuring apparatus according to claim 4, wherein the distance means on board the aircraft includes a 960 Hz filter means connected to the low frequency output of the ILS receiver, detector means connected to the output of the filter means for detecting at least one of a 60 Hz signal and a multiple of a 60 Hz signal and providing an output indicative thereof, measuring means for measuring the amplitude of the detected signal, and indicator means for providing a distance display of the output of the measuring means.

9. Distance measuring apparatus according to claim 8, further including validating means connected to the output of the measuring means and an output of the ILS receiver for validating the output of the measuring means in accordance with the deviation current of the localizer signal of the ILS receiver, the validating means providing a validated measuring means output signal to the indicator means.

10. Distance measuring apparatus according to claim 9, wherein the two lateral aerials are spaced apart by approximately 1 lambda on respective sides of the low aerial and are more directive than the low aerial.

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Distance measuring apparatus integrated in an aircraft landing system of the ILS type

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