METHOD AND DEVICE FOR DETERMINING SPEED MODULE OF BALLISTIC OBJECT WITH USE OF SELECTION OF RANGE SQUARES Russian patent published in 2018 - IPC G01S13/58 

FIELD: radar ranging.

SUBSTANCE: invention relates to radar and can be used primarily in terrestrial radar stations for circular and sector surveys. This technical result is achieved by the fact that at equal intervals of time T₀ terrestrial radar stations measure the range and height of the ballistic object, estimated height of the ballistic object is determined in the middle of the observation interval using α, β filter and estimate of the second increment of the square of the range at the end of the observation interval using α, β, γ filter, geocentric angle between the radar and the ballistic object and acceleration of gravity in the middle of the observation interval are calculated, after which the value of the velocity modulus of the ballistic object is determined in the middle of the observation interval on the unperturbed passive part of the trajectory, and the height estimate is determined using α, β filter, wherein the smoothing of height measurements is first performed in a time-directional direction until the end of the observation interval, and then in the opposite direction until the middle of the observation interval, and an estimate of the second increment of the square of the range is determined using α, β, γ filter at the end of the observation interval by sequentially filtering the values of the squares of the range. Device for realizing the method consists of blocks for converting input signals, estimating the second increment of the range square (α, β, γ filter), height estimation (α, β filter), as well as geocentric angle calculators, acceleration of gravity and velocity module, connected in a certain way.

EFFECT: achieved technical result is an increase in the accuracy of determining the velocity modulus of a ballistic object at a terrestrial radar station with coarse measurements of angular coordinates with a reduction in the amount of computing resources used.

2 cl, 4 tbl, 3 dwg