METHOD FOR DETERMINING SPEED MODULE OF BALLISTIC OBJECT USING PRODUCTION SAMPLE OF RANGE BY RADIAL VELOCITY AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC G01S13/58 

Abstract RU 2634479 C2

FIELD: radio engineering, communication.

SUBSTANCE: at time intervals equal to the review period T0, the range, the elevation angle, the radial velocity are measured in the radar stations (RS), and a sample of the ballistic object (BO) height and the product of the range by the radial velocity is formed. The estimate of the BO height is determined in the middle of the observation interval and estimate of the first product increment of the range by the radial velocity at the end of the observation interval with α, β filters. The geocentric angle is calculated between the radar and the BO in the middle of the observation interval according to the formula , where raver - the range to the BO in the middle of the observation interval, Re - the radius of the Earth, and the acceleration of gravity in the middle of the observation interval by the formula , where g0 - the gravity acceleration on the surface of the Earth. Further, the smoothed value of the BO velocity module is calculated in the middle of the observation interval in the unperturbed passive part of the trajectory according to the formula , where N is the number of measurements in the observation interval. The device for implementing the method consists of two α, β filters and geocentric angle calculators, gravity acceleration and a velocity module.

EFFECT: increasing the accuracy of determining the velocity module of a ballistic object in the ground-based radar stations with coarse measurements of elevation angle, azimuth and range, and reducing the volume of the stored previous measurements.

2 cl, 3 dwg, 4 tbl

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RU 2 634 479 C2

Authors

Belonogov Petr Zoteevich

Stuchilin Aleksandr Ivanovich

Shustov Efir Ivanovich

Shcherbinko Aleksandr Vasilevich

Dates

2017-10-31Published

2015-07-14Filed