JPS63305268A - Pulse radar system - Google Patents

Abstract

PURPOSE:To implement a receiver testing apparatus in a simple constitution, by incorporating receiver testing modules at four symmetric positions at the upper and lower parts and the right and left parts on the surface of the antenna of an array antenna part. CONSTITUTION:Many transceiver modules 9 are arranged on an array antenna part 4. Receiver testing modules 13, wherein delay lines, phase shifters and the like are built in, are incorporated at four symmetrical positions at the upper and lower parts and the right and left parts on the surface of the antenna of the array antenna part. The phase shifter in each receiver testing module 13 is set at a specified value. In this way a transmitting signal from an exciter 1 is sent to a receiver 3 as a pseudo signal, and the receiver 3 is tested.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a test circuit for a receiving system of a pulse radar device using a phased array antenna.

[Conventional technology]

FIG. 5 is a diagram showing a pulse radar device incorporating a conventional receiving system test circuit, and is similar to FIG.

(1) is the exciter, (2) is the transmitter/receiver switch, (3) is the receiver, (4) is the array antenna section, (5) to Uυ are the components of the above array antenna section, and (5) is the power supply. circuit, (6) ~
(8) is the input/output terminal of the above power supply circuit (5), (6) is the distance system No. 1g terminal, (force is the turning angle system signal terminal, (8)
is the elevation angle system signal terminal.

(9) is the transmitter/receiver module, ul is the element antenna, αυ
is the pass board, α2 is the module control circuit, c! 4
are pseudo signal generators, (25a), (25b), (2
5c) is a coupler. Moreover, FIG. 4 is a configuration diagram of the above-mentioned transmitting/receiving module +91, (14a), (14b)
are input/output terminals, US is a phase shifter, (16a), (1
6b) is the circuit l'* ul is the receiving system protection switch, ■ is the receiving system amplifier, υ is the drive circuit, @ is the terminal, (
) is the transmission system amplifier.

Next, the operation will be explained.

During transmission, the transmission signal output from the exciter (1) is input to the distance system signal terminal (6) of the feeder circuit (5) in the array antenna section (4) through the transmission/reception switching a (2). The transmission signal input to the power supply circuit (5) is distributed to a large number of terminals, and is manually transmitted to a transmission/reception module (9) connected to each terminal. The transmission signal amplified and phase-set by the transmission/reception module (9) is radiated into space beyond the element antenna UL. During reception, the received signal is input from space through the element antenna 11 to the transmitting/receiving module (9), after being amplified and phase-set.

It is output to the power supply circuit (5). The received signals are synthesized by the power supply circuit (5), and each is connected to a distance system signal terminal (6).
) y υ distance system signal, turning angle system signal terminal (7) y y si turning angle system signal, elevation angle system signal terminal (8) outputs the depression angle system signal, and the distance system signal is output from the above transmission/reception switch ( 2)
Accordingly, the turning angle system signal and the elevation angle system signal directly enter the receiver (3) and are processed.

Next, the operation of the transmitter/receiver module (9) will be explained with reference to FIG.

During transmission, the transmission signal input from the input/output terminal (14a) is sent to the phase shifter u! After being set to a predetermined phase by 9.

The signal is input to the transmission system amplifier (2) by the circulator (16a). The transmission signal amplified by the transmission system amplifier (to) is sent to the input/output terminal (1) by the circulator (16b).
4b). The receiving system protection switch (19 is connected to the terminal side, and the above circulator (16
The transmitted signal leaking into the receiving system via b) is absorbed by the terminal. During reception, the received signal inputted from the input/output terminal (14b) enters the reception protection switch α via the circulator (16b).

The reception protection switch 1 is connected to the reception amplifier (1), and the reception signal input to the reception amplifier (a) is amplified and then passed through the circulator (16a) to the phase shifter. After entering αS and setting 2 phases.

It is output from the input/output terminal (14a). The components of the transmitting/receiving module (9) are controlled by the module control circuit α
Drive circuit CI! Do it with υ.

Next, the operation during receiver testing will be described.

The pseudo signal outputted by the pseudo signal generator @ is sent to the coupler (2) installed between the feeder circuit (5) and the receiver (3).
5a), (25b), and (25c), and the distance system (hereinafter referred to as the R system) is connected to the rotation angle system (hereinafter referred to as the B system) by the transmission/reception switch (2). ).

The elevation angle system (hereinafter referred to as the E system) is directly connected to the receiver (3).
is input. Inside the above pseudo signal generator @.

An attenuator and a phase shifter are incorporated to adjust the level and set the phase of the pseudo signal.

[Problem that the invention seeks to solve]

Since conventional pulse radar equipment is configured as described above, it is necessary to install special equipment such as a pseudo signal generator and coupler for receiver testing, and it has been desired to simplify the testing equipment. .

This invention is intended to fulfill the above-mentioned demands.

This is a pulse radar device that enables receiver testing by incorporating receiving system test modules each incorporating a delay line, etc., in four symmetrical locations in the array antenna section where the above-mentioned transmitting and receiving modules are arranged.

[Failure to solve the problem]

The pulse radar device according to the present invention includes a receiving system test module that incorporates a delay line, a phase shifter, etc. at four symmetrical positions on the antenna surface in an array antenna section in which a large number of the above-mentioned transmitting/receiving modules are arranged. The transmission signal from the exciter is used as a pseudo signal by incorporating the phase shifter in the receiving system test module and setting each of the phase shifters in the receiving system test module to a predetermined value.

This is what is sent to the receiver.

[Effect]

The pulse radar device according to the present invention eliminates the need for a pseudo signal generator incorporating an oscillator, a phase shifter, etc. in order to convert the transmitted signal from the exciter into a pseudo signal by using the receiving system test module, thereby simplifying the receiver test equipment. The transformation is measured.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, (1) to α are the same as in Figure 5, and Q
3 is a receiving system test module. FIG. 2 is a diagram showing the configuration of the module connection terminal surface of the power supply circuit (5).

(24a), (24b), (24c), (
24a) is the module connection terminal surface of each of the four blocks. Figure 3 shows the above receiving system test module 0.
In the configuration diagram.

(14a), (14b), α! 19. (16a)
, α9. Juυ and @ are the same as in FIG. 4, αη is a delay circuit, and al is a transmission/reception changeover switch.

Next, the operation during receiver testing will be explained.

During transmission, the transmission signal output from the exciter (1) is input to the R thread signal terminal (6) of the array antenna section (4) via the transmission/reception switch (2). When receiving, use the above transmitter/receiver switch (2)
is connected to the receiver (3) above, and the array antenna section (4)
The R thread signal, B thread signal, and E thread signal from the above all enter the receiver (3). Here, the R thread signal is applied to all module connection terminal surfaces, namely A section (24a) and B section (24b).
.

It is the sum component of the outputs of all reception system test modules α different in part 0 (24c) and part D (24d), and the B system signal is part A (24a) and part 0 (24c) of the module connection terminal surface.
The E thread signal is the difference component between the outputs of the receiving system test module 0 of the B part (24b) and D part (24a), and the E thread signal is the difference component of the output of the receiving system test module 0 of the module connection terminal surface A part (24a), B part (+4b) and 0 part ( 24c).

D section (24 (1)) This is the difference component of the output of the receiving system test module 03. During the receiver test, the transmitter/receiver module (9)
In all cases, the transmitting system amplifier (to) and the receiving system amplifier 4 are inactive, and there is no transmitting or receiving operation.

The operation of the receiving system test module (11) is shown below.

During transmission, the transmission signal input from the input/output terminal (14a) enters the phase shifter α9, and after being set to a predetermined phase, is input to the delay circuit αD. The delay time of the delay circuit αη is longer than the pulse width of the transmission signal, and the transmission signal is
When the signal is output from η, the pulse radar device is in the receiving state. During reception, the transmission/reception changeover switch α9 is connected to the reception system protection switch α value, and the reception system protection switch α9 is connected to the reception system amplifier (to). Therefore, the signal output from the delay circuit αD passes through the transmission/reception changeover switch αe and the reception system protection switch Ql, enters the reception system amplifier ■, is amplified, and is amplified by the circulator (16a).
) through.

Input to the above phase shifter α. After receiving a predetermined phase setting from the phase shifter α9, the input/output terminal (14a
) is output. The pseudo signals are combined in the power supply circuit (5) and output as an R thread signal, a B thread signal, and an E thread signal, and the signal level is adjusted by the phase setting of the receiving system test module α3. In other words, when the phase settings of all reception system test modules 0 are the same, the R thread signal is
Since the outputs of each reception system test module α1 are added in the same phase, the signal level is maximized, and the B thread signal is output from the reception system test module α in section A (24a) and section 0 (24c) on the module connection terminal surface. Output and part B (2ab),
Receiving system test module (13 outputs in section D (24a) are added in reverse phase, so it is the minimum. Receiving system test in section A (24a) and (3rd section (24c) on the module connection terminal surface) Module 0 and B section (24b), D section (
If the phase setting of the receiving system test module αj in 24d) is changed, the level of the R thread signal decreases because the sum component decreases, and the level of the B thread signal increases because the sum component increases. Similarly, for the E string signal, the above reception system test module 0
The level can be adjusted by setting the 0 phase.

The components of the receiving system test module 03 are controlled.

According to the control signal input to the receiving system test module a3 through the module control circuit α2 and the Sibus board αυ,
This is done by the drive circuit Q2.

〔Effect of the invention〕

As described above, according to the present invention, the receiver testing device for a pulse radar device is placed in four symmetrical positions on the antenna surface in the array antenna section.

9 oscillators to achieve this by incorporating a receiving system test module that incorporates a delay line, phase shifter, etc.

This eliminates the need for a pseudo signal generator incorporating a phase shifter, etc., and has the effect of simplifying the process by eliminating nine parts and space.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing a pulse radar device according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of the module connection terminal surface of the power supply circuit in FIG. 1, and FIG. A configuration diagram of a receiving system test module. FIG. 4 is a block diagram of a transmitting/receiving module, and FIG. 5 is a block diagram showing a conventional pulse radar device. +11 is the exciter, (2) is the transmission/reception switch, (3) is the receiver, (4) is the array antenna section, (5) is the feeder circuit, (6
) is the distance system signal terminal, (7) is the turning angle system signal terminal, (
8) is the elevation angle system signal terminal, (9) is the transmitting/receiving module, OI is the element antenna, αυ is the bus board, α is the module control circuit, C3 is the receiving system test module, (1
4a), (14b) are input/output terminals, C1 is a phase shifter,
(16a) and (16b) are circulators, the frame is a delay circuit, and the α barrel is a transmission/reception switch. C9 is the receiving system protection switch, ■ is the receiving system amplifier. C21) is the drive circuit, @ is the terminal, and (to) is the transmission system amplifier. (24a), (24b), (24c), and (24a) are module connection terminal surfaces. In addition, in FIG. 9, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A large number of element antennas arranged on the same plane, through which transmission signals are radiated into space and reception signals are input, and a transmission/reception module that is connected to each of the element antennas and alternately inputs and outputs transmission signals and reception signals. A large number of connection terminals each connected to the transmitter/receiver module are arranged on a plane, divided into four blocks vertically and horizontally, and the received signals from the connection terminals are connected to each part of the four blocks on the opposite side by multi-stage connection. Distance system signal terminal that outputs as the sum component of the combined output of the two upper and lower blocks, Elevation angle system signal terminal that outputs as the difference component of the combined output of the two blocks on the left and right, Turning angle that outputs as the difference component of the combined output of the two left and right blocks A power supply circuit that waits for the three system signal terminals, a receiver that receives and processes received signals from the distance system signal terminal, elevation angle system signal terminal, and turning angle system signal terminal of the power supply circuit, and the distance of the above power supply circuit. an exciter that generates a transmission signal to be input to the system signal terminal; a transmission/reception switch that is connected to the exciter and the receiver and switches the connection to the distance system signal terminal of the power supply circuit; and a signal that controls the transmission/reception module. In a pulse radar device comprising a module control circuit that generates a signal, and a bus board that distributes signals from the module control circuit to the ambiguous transmitting and receiving modules, a valley formed into four blocks is formed on a power supply circuit in which the transmitting and receiving modules are arranged. a phase shifter through which transmitted and received signals pass vertically and horizontally symmetrically on the antenna surface; a circulator connected to the phase shifter to separate the direction of the signal; and a delay circuit connected to the circulator to delay the transmitted signal; A transmitting/receiving switch connected to the delay circuit and separating the transmitting/receiving signal; a receiving system protection switch connected to the transmitting/receiving selector switch; and an amplifier connected to the receiving system protection switch and the circulator to amplify the received signal. , and a drive circuit that controls the components using control signals, the receiving system test module is arranged such that the transmitting/receiving switch side is connected to the element antenna, and the phase shifter side is connected to the feeding circuit. A pulse radar device featuring: