SU1575119A1 - Apparatus for determining angular position of aerial - Google Patents

Abstract

The invention relates to radio engineering and can be used in radar and radio navigation. The purpose of the invention is to improve accuracy. The device comprises a synchronizer 1, an angle-code converter 2, a calculator 3 of the antenna angular position and a meter 4 of the time interval. Synchronizer 1 generates pulse signals with repetition frequencies F ₁ , F ₂ and F ₃ (F ₁ * 98F ₂ * 98F ₃ ), while signals of a single time system or signals of a highly stable generator can be used as signals of frequency F ₃ . The true angular position of the antenna is determined in the calculator 3 by the formula ϕ _east = ϕ _tech + Δϕ ^. L (1), where Δϕ = T ₃ (ϕ _{tech I} -ϕ _{tech I + 1} ) ^. M, T ₃ - the delay of the signal at the output of the meter 4 time interval, L = + 1 at ϕ _{tech I} * 98f _{tech I + 1} , L = -1 with ϕ _{tech I} * 98f _{tech I + 1} , M = 1 at F ₃ = 1 Hz 1 / F ₃ - with F ₃ * 981 Hz and F ₃ with F ₃ * 981 Hz, ϕ _{tech I} is the signal code at the output of converter 2. When calculating the angular position using formula (1), the sign correction and the module of the rotation speed of the antenna shaft are taken into account transition zone 0-360 °. 2 Il.

Description

V h w

Fig, 1

31575119

The invention relates to radio engineering and can be used in radar, radio navigation and other areas of technology.

The aim of the invention is to improve the accuracy.

Figure 1 shows the structural electrical circuit of the device; Figure 2 shows timing charts that reduce his work.

The device for determining the angular position of the antenna contains a synchronizer 1, the angle converter 2 is a code, the calculator 3 is the angular position of the antenna, and the meter 4 is a time interval.

The device works as follows.

Synchronizer 1 generates pulsed signals with frequencies of frequency F ,,, Tr and RdSR Ft 7 F3), while signals of a single time system or signals of 25 highly stable oscillators can be used as signals of frequency F3.

The operation of the device is explained using the diagrams shown in FIG.

Transducer 2 starts converting the angular position of the rotating antenna shaft at each pulse of the repetition frequency of the PZ (Fig. 2b) after the following repetition pulse of the P frequency (Fig. 2a). The conversion by the pulse of the end of the conversion Fn is finished (Fig. 2c). The code (if), reflecting the value of the signal at the output of the converter 2, is shown in Fig. 2d, and the symbols d of the code follow with a repetition frequency

 For each measurement of the angular position of the antenna shaft, the meter 4 measures the magnitude of the delay T 3 between the im, the pulse signals with the repetition rate FJ and the termination signals of 35

50

education F "" (figv).

The signals from the output of the converter 2, the meter 4 and the synchronizer 1 are fed to the transmitter 3, which calculates the antenna angular position taking into account the error compensation due to the D () conversion. The true angular position of the antenna is determined in the calculator by the formula

about

H

isg

  L

where dy teki.) P

T - the value of the delay signal

output meter 4 time interval; + With a check; V

tech j ",

Q d

,,

five

0

-)

-1 at. if tech.

1 at F3 1 Hz; M 1 / P3 with F3 1 Hz; F C 1 Hz.

Claims (1)

When calculating the angular position by the formula (1), the correction of the sign and the module of the speed of rotation of the antenna shaft in the transition zone 0-360 ° is taken into account. Invention Formula An apparatus for determining the angular position of the antenna, comprising a synchronizer, the outputs of pulse signals of which with the repetition frequencies F 7, F 2 and F3 (F1 e F 2 7 F) are connected to the corresponding inputs of the angle converter - code, calculator of the angular position of the antenna, the first input of which is connected With the information output of the angle converter - a code, characterized in that, in order to improve accuracy, a time interval meter is introduced, the start and stop inputs of which are connected respectively to the output of pulse signals with That repetition F3 and the output of the pulse signal of the end of the converter's conversion are the angle — code, and the output — with the second input of the angular position calculator, the third and fourth inputs of which are connected respectively to the outputs of the pulse signals, with the repetition frequencies F and F3, and the fifth input - with the output of the pulse signal of the conversion end of the converter, the angle is a code, while the calculator of the antenna angular position is made in the form that implements calculations using the formula  Rist Thu-et + DM1- L. where if is the value at the output of the computer; u - the value of the signal at the information output of the converter the stop code; L T s (MVexT tech-i) Ta is the signal delay value at the output of the time interval meter L And with tech; YTeKU | i 15751 -1 at. , 41. , ( / 7 ai I I I I I I I I I I I I I t 6 1 at F. 1 Hz; M 1 / P3 at F3 Hz; F3 at F3 1 Hz. th / yy