KR101892690B1 - IFF and method for detecting peak power of transmitting/receiving signal - Google Patents

Abstract

An identification friend or foe (IFF) for transmitting/receiving peak power and a method for measuring the transmitting/receiving peak power are provided. An identification friend or foe (IFF) for the transmitting/receiving peak power of at least one of an active phased array radar and a passive phased array radar provides question signals for each of N channels, receives the provided question signals and the reception signals reflected from a target through a feedback path and performs down conversion on them, and detects peak power for the down-converted question signals and the reception signals using the delay time of the down-converted question signals and of the reception signals. The IFF includes a plurality of question providing and peak power detectors; a plurality of band convertors; and a plurality of transceivers.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a peer identification interrogator for measuring transmission power and peak power,

The present invention relates to a peer identification interrogator for measuring transmission power and peak power and a peak power measurement method thereof. More particularly, the present invention relates to a query signal provided for N channels in a single transmission / The present invention relates to a peer identification interrogator for measuring transmit / receive peak power and a method of measuring peak power thereof.

In the Defense Defense System, the identification function of the radar system identifies whether the aircraft is allied to the moving aircraft, receives the RF signal including the code information suitable for the question signal, and identifies the alliance.

The radar, which plans to power up recently, is based on an Active Electronically Scanned Array Radar (AESA) structure including a number of transmit and receive modules. The active phased array radar can adjust the phase and size of the RF signal radiated through a single antenna radiation element, unlike a passive electronically scanned array (PESA) structure.

In addition, it is easy to replace and check the transmission / reception path for each channel, and the antenna system of the ground, maritime, and aerial radars is designed around an active phased array structure all over the world.

The advantages of designing the peer identification function in the active phased array structure are also mentioned.

In general, the system for the peer identification function comprises: an interrogator (or IFF: Identification Friend or Foe) that controls the transmitted pulse information and processes the reflected signal information; And a peer identification antenna receiving the reflected and reflected signals.

The interrogator includes a DSP (Digital Signal Processor) for signal processing and a transmission / reception module, and a plurality of transmission / reception modules can be used to control the phase and size of each of the plurality of radiation elements.

In the past, the power of the RF signal including the question signal information is amplified and outputted to the antenna, and the transmitted question signal is received again and used for peak power detection. That is, the PI interrogator transforms the digitized interrogation signal into an analog signal, up-regulates the frequency, and delivers it to the power amplifier. The signal amplified by the power amplifier is coupled, the down-converted signal is received, and the signal is transferred to the low frequency band. The down-converted analog transmission signal is digitized to calculate the power range, and the corresponding data is received from a module requiring a peak power value.

However, the method and / or structure for measuring the peak power using a conventional interrogator is suitable for a passive phased array (PESA) structure, not an active phased array structure. In particular, existing techniques only deal with peak power measurements corresponding to the power amplifier and transmission path of a single transmit module. Since most current radar systems employ active phased array architecture, the detection of the peak power of the transmit power for each channel must be considered.

In addition, the conventional method and / or structure for measuring the peak power considers only the peak power of the transmission path (i.e., the transmitted signal) but does not consider the peak power of the received path (i.e., the received signal). In a passive phased array radar or active phased array radar, the transmit / receive path is controlled by a single module. Therefore, it is also necessary to measure the output of the receive path as well as the output of the transmit path, and verify the receive path for the reflected signal from the target.

Domestic registered patent No. 10-1838210 (registered on July, 2018)

SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a radar system, This paper proposes a peer identification interrogator and its peak power measurement method for the transmission power peak power measurement that can detect the peak power for each transmission power.

Another aspect of the present invention is to provide a method and apparatus for measuring the power of a signal received from a target by applying power measurement and peak power detection to a receive path as well as a transmit path in a passive phased array radar or active phased array radar This paper proposes a peer identification interrogator and its peak power measurement method for the transmission power peak power measurement.

Another object of the present invention is to provide a method and apparatus for providing a plurality of data on a fixed delay time stored in a register in order to more accurately measure an expected delay time of a transmission signal or a reception signal when an RF signal is shaken due to a disturbance This paper proposes a peer identification interrogator and its peak power measurement method for the measurement of transmit power and peak power.

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a peer identification interrogator for measuring transmit and receive peak power of at least one of an active phased array radar and a passive phased array radar, Providing a plurality of questions and peak power detectors; A plurality of band converters for up-converting a frequency band of the question signals provided from the plurality of question providing and peak power detecting units; And a plurality of transceivers for amplifying the power of the up-converted interrogated signals and transmitting the amplified interrogated signals to an antenna, and for providing the received signals reflected from the target to the plurality of band transformers through a feedback path, Wherein the plurality of band converters downconvert the frequency bands of the received interrogating signals and the received signals and the plurality of interrogating and peak power detectors are operable to receive the down- And detects the peak power of the down-converted question signals and the down-converted received signals using the detected delay times, respectively.

Each of the plurality of transceivers comprising: a power amplifier for amplifying power of the up-converted Q signal; And a low noise amplifier amplifying the low noise power of the received signal reflected from the target after the amplified interrogation signal is sent to the antenna.

Wherein the plurality of band converters comprises: an up-converting unit for up-converting a frequency band of a question signal provided by the question providing and peak power detecting unit; A down converter for downconverting a frequency band by receiving a question signal amplified by the power amplifier and sent to an antenna through the feedback path; And a receiving downconverting unit for downconverting the frequency band of the received signal amplified by the low noise amplifier.

Wherein each of the plurality of question providing and peak power detecting units includes a DAC (Digital Analog Converter) for converting the question signal into an analog signal and outputting the analog signal to the up conversion unit; The transmission down-converter detects a delay time of the question signal (hereinafter, referred to as 'question delay time') by comparing a pulse of the down-converted question signal with a predetermined reference dispatch pulse, A transmitted peak power detector for detecting a peak power of the down-converted question signal; And a receiving unit configured to detect a delay time of the received signal by comparing a pulse of the down-converted received signal in the receiving down-conversion unit with a preset reference receiving pulse (hereinafter, referred to as a receiving delay time) And a receiving peak power detector for detecting the peak power of the down-converted received signal using the received peak power detector.

Wherein the transmission peak power detection unit comprises: a detector for converting the power of the down-converted Q signal into a voltage and outputting the converted voltage; An actual pulse generator for generating an actual question pulse based on a voltage output from the detector; A reference pulse generator for generating the predetermined reference transmission pulse; A delay detector for comparing the actual question pulse with the reference dispatch pulse to count a dispatch delay time corresponding to the delay interval when a delay interval occurs; An ADC (Analog Digital Converter) for converting the voltage of the question signal output from the detector into a digital signal; And a peak power value for a signal that has elapsed by the counted transmission delay time at a time point corresponding to an intermediate time value of an interval during which the reference transmission pulse is high, among the digital signals sequentially converted by the ADC, And a peak detector outputting the output signal.

Wherein the receiving peak power detecting unit comprises: a detector for converting the power of the down-converted received signal into a voltage and outputting the voltage; An actual pulse generator for generating an actual reception pulse based on a voltage output from the detector; A reference pulse generator for generating the predetermined reference reception pulse; A delay detector for comparing the actual reception pulse with the reference reception pulse to count a reception delay time corresponding to the delay interval when a delay interval occurs; An ADC (Analog Digital Converter) for converting the voltage of the received signal output from the detector into a digital signal; And a peak power value for a signal that has passed the counted reception delay time at a time point corresponding to an intermediate time value of a period during which the reference reception pulse is high, And a peak detector outputting the output signal.

According to another embodiment of the present invention, there is provided a method for transmitting / receiving peak power measurement of a peer identification interrogator, comprising the steps of: (A) providing the question signals for each of N channels; (B) up-converting the frequency band of the question signals provided in the step (A) by the peer identification interrogator; (C) amplifying the power of the up-converted interrogation signals and transmitting the amplified power to the antenna; (D) receiving, by the peer identification interrogator, the sent question signals through a return path and detecting a peak power for a transmission output for each of the N channels; And (E) the peer identification interrogator receiving the received signals reflected from the target through the feedback path and detecting the peak power for the received output for each of the N channels.

Wherein the step (D) includes the steps of: (D1) receiving the interrogation signal sent by the antenna through the feedback path and downconverting the frequency band; And (D2) the peer identification interrogator detects a delay time of the interrogation signal (hereinafter referred to as 'question delay time') by comparing a pulse of the down-converted interrogation signal with a predetermined reference transmission pulse, And a step of detecting the peak power of the down-converted Q signal using the Q delay time.

Wherein the step (D2) comprises the steps of: (D21) converting the power of the down-converted question signal into a voltage and outputting the converted voltage; (D22) the PI questioner generates an actual question pulse based on the voltage output from the step (D21); (D23) the peer identification interrogator generating the predetermined reference emission pulse; (D24) comparing the actual question pulse with the reference dispatch pulse, and counting a question delay time corresponding to the delay interval when the delay interval occurs; (D25) converting the voltage of the question signal output from the detector into a digital signal; And (D26) the peer identification interrogator calculates the counted number at a time point corresponding to an intermediate time value of a period during which the reference transmission pulse is high, among the digital signals sequentially converted and input in the step (D25) And outputting a peak power value for a signal that has elapsed by the Q delay time.

Wherein the step (E) comprises: (E1) amplifying the power of the received signals reflected from the target by the peer identification interrogator; (E2) receiving the amplified reception signals through the feedback path, and downconverting the frequency band; And (E3) the peer identification interrogator detects a delay time of the received signal by comparing a pulse of the down-converted received signal with a preset reference reception pulse, And detecting the peak power of the down-converted received signal using the received delay time.

The step (E3) comprises the steps of: (E31) converting the power of the down-converted received signal into a voltage and outputting the converted signal; (E32) the step of generating the actual reception pulse based on the voltage output from the step (D21); (E33) the peer identification interrogator generating the predetermined reference reception pulse; (E34) comparing the actual reception pulse with the reference reception pulse, and counting a reception delay time corresponding to the delay interval when a delay interval occurs; (E35) the step of converting the voltage of the received signal output from the detector into a digital signal; And (E36) the peer identification interrogator determines the number of times the reference reception pulse is counted at a time point corresponding to an intermediate time value of a period during which the reference reception pulse is high, among the digital signals sequentially converted and input in the step (E35) And outputting a peak power value for a signal that has elapsed by a reception delay time.

According to the present invention, in a radar system adopting an active phased array structure or a passive phased array structure, peak power for transmission outputs of signals transmitted by a plurality of transmission / reception modules, that is, a plurality of channels, can be detected.

Further, according to the present invention, it is possible to detect the output measurement and the peak power for the receive path as well as the transmit path in the passive phased array radar or the active phased array radar, and to verify the receive path for the reflected signal from the target And the operation analysis computer of the pier identification interrogator storing the corresponding value can confirm the output abnormality easily when there is a problem in transmission or reception.

In addition, according to the present invention, even if an RF signal (i.e., a transmission signal or a reception signal) is shaken due to a disturbance by storing and using a plurality of fixed delay times in a register, Can be measured more accurately.

Also, according to the present invention, it is possible to detect a delay timing of a transmission signal and a reception signal by adding simple logic. If FPGA (Field Programmable Gate Array) is used, the memory capacity can be saved, so even if an inexpensive FPGA with low capacity memory is selected, the fixed delay time for each operation mode can be stored and the same effect can be obtained for peak power measurement. , It is possible to reduce the unit cost of the transmission / reception module which requires mass production. In addition, by not using unnecessary additional memory chips, it is possible to reduce the cost per module and increase the space utilization of the printed circuit board (PCB).

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

FIG. 1 illustrates a peer identification interrogator for transmitting / receiving peak power measurement according to an embodiment of the present invention.
FIG. 2 is a view for explaining a reference transmission pulse and a reference reception pulse used in an embodiment of the present invention; FIG.
3 is a diagram showing a reference transmission pulse and a reference reception pulse for each operating mode of the peer identification radar,
FIG. 4 is a block diagram showing a first question providing unit and a peak power detecting unit, a first band converting unit, and a first transceiver,
5 is a block diagram illustrating a first transmission peak power detector according to an embodiment of the present invention.
6 is a diagram showing an example of the reference dispatch pulse A, the actual question pulse A_Delay and the actual delay pulse Delay,
FIG. 7 is a simplified circuit diagram of the delay detector shown in FIG. 5,
FIG. 8 is a diagram illustrating a peer identification interrogator for transmitting / receiving peak power measurement according to another embodiment of the present invention, and FIG.
9 to 11 are flowcharts illustrating a method for transmitting / receiving peak power measurement of a peer identification interrogator according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween.

Where the terms first, second, etc. are used herein to describe components, these components should not be limited by such terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

Also, when it is mentioned that the first element (or component) is operated or executed on the second element (or component) ON, the first element (or component) It should be understood that it is operated or executed in an operating or running environment or is operated or executed through direct or indirect interaction with a second element (or component).

It is to be understood that when an element, component, apparatus, or system is referred to as comprising a program or a component made up of software, it is not explicitly stated that the element, component, (E.g., memory, CPU, etc.) or other programs or software (e.g., drivers necessary to run an operating system or hardware, etc.)

It is also to be understood that the elements (or elements) may be implemented in software, hardware, or any form of software and hardware, unless the context requires otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details.

In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons for explaining the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The configuration of each of the peer identification interrogators 100, 800 for the transmission and reception peak power measurement shown in Figs. 1, 4, 5 and 8 is shown to be functionally and / or logically separable, May be easily deduced by an average expert in the field of the present invention that does not mean that the configuration of the device is divided into separate physical devices or written in a separate code.

The peer identification interrogator 100 for measuring the transmission / reception peak power may be installed in a predetermined data processing apparatus to implement the technical idea of the present invention.

The peer identification interrogators 100 and 800 for measuring the transmission power and the peak power according to the embodiment of the present invention may be implemented as a personal computer (PC), a server, a laptop PC, a netbook Computer) and the like can be operated by one of all the electronic devices capable of installing and executing the program.

FIG. 1 is a diagram illustrating a peer identification interrogator 100 for transmitting / receiving peak power measurement according to an embodiment of the present invention.

The peer identification interrogator 100 for measuring transmission power and peak power according to an embodiment of the present invention shown in FIG. 1 provides a question signal for N (N is an integer of 1 or more) channels in a single transmission / Amplification can be processed. In addition, the peer identification interrogator 100 may provide a reception path for coupling the low-noise amplified reception signal as well as the transmission path of the interrogation signal to down-convert the received signal to measure the peak power.

The peer identification interrogator 15 (100) is applicable to an active electronically scanned array (AESA) structure including at least one transmission / reception module or a passive electronically scanned array (PESA) structure.

Referring to FIG. 1, a peer identification interrogator 100 for measuring transmission and reception peak power according to an embodiment of the present invention includes first to third question provision and peak power detectors 110, 120 and 130, And third to fourth transceivers 170, 180, and 190. The first to third transceivers 140, In FIG. 1, three transmission / reception signals are processed for convenience of explanation. In practice, less than three or three or more transmission / reception signals can be processed.

The first to third query provisioning and peak power detectors 110, 120, and 130 may be configured to simultaneously or interrogate query signals for N (three in FIG. 1) channels in a single transmit / receive module or multiple transmit / At a different time.

The first to third band converters 140, 150 and 160 may up-convert the frequency bands of the question signals provided by the first to third question providing and peak power detectors 110, 120 and 130. For example, since the interrogation signal is an intermediate frequency (IF) band signal, the first through third band-shifting units 140, 150, and 160 can up-convert the signals into RF band signals.

The first to third transceivers 170, 180 and 190 amplify the power of the up-converted interrogation signals and transmit them to the first to third antennas 11, 12 and 13, To the first to third band converters 140, 150, and 160 through the first and second frequency bands.

The question signals sent out by the first to third antennas 11, 12 and 13 are reflected on the target and are received by the first to third antennas 11, 12 and 13, The third transceivers 170, 180, and 190 may provide the received signals reflected from the target to the first through third band transformers 140, 150, and 160 through a feedback path.

The first to third band converters 140, 150, and 160 may downconvert the frequency bands of the received interrogation signals and the received signals to an intermediate frequency band.

The first to third query provisioning and peak power detectors 110, 120 and 130 detect the question signals sent to the first to third antennas 11, 12 and 13 and the corresponding one of the received signals The peak power for the transmission output and the reception power for each of the N channels can be detected.

The first to third query provisioning and peak power detectors 110, 120, and 130 detect the delay times of the down-converted question signals and the received signals, respectively, and output the down- And the peak power for the down-converted received signals, respectively. Thus, in the embodiment of the present invention, it is possible to detect the peak power of the transmission output for each channel. It is also possible to detect the peak power of the received output with respect to the received signal reflected from the target.

FIG. 2 is a diagram for explaining a reference transmission pulse and a reference reception pulse used in the embodiment of the present invention. FIG.

Referring to FIG. 2, a period in which a first digital pulse is low in a reference trigger signal is an expected transmission period designed to transmit an RF interrogation signal, and a period in which a high digital pulse is low is an RF interrogation signal It is the expected reception interval designed to receive.

Therefore, the RF question signal (Transmitter Signal) is sent when the digital pulse is low and the Receiver Signal is received when the digital pulse is high. The emission is to radiate an RF interrogation signal at the antenna, and the reception is to receive a reflected RF interrogation signal at the antenna that is matched to the target.

The device controlling the peer identification interrogator 100 or the peer identification interrogator 100 operates the internal circuitry to send the RF interrogation signal during the low period and the internal circuitry to receive during the high period.

(N = 1, 2, 3,?) According to an exemplary embodiment of the present invention includes a digital pulse having a high state during a predicted transmission interval for transmitting an RF interrogation signal, that is, a reference transmission pulse . Further, the Nth receiving peak power detecting section generates a reference receiving pulse that is in the high state during the expected receiving period in which the reflected receiving signal is received.

The reference transmission pulse and the reference reception pulse may be used as reference pulses in the first transmission peak power detection unit 114 and the first reception peak power detection unit 116, respectively, which will be described later.

In addition, the trigger signal may be different depending on the operation mode of the peer identification radar, so that the reference transmission pulse and the reference reception pulse may also be different depending on the operation mode of the peer identification radar.

The operation mode of the peer identification radar is an operation mode of an active phased array peer identification radar or a passive phased array peer identification radar to which the peer identification interrogator 100 is applied. For example, MODE 1, MODE 2, MODE 3 / A, MODE C, and MODE 4. The operation mode of the peer identification radar can be refer to the description of http://www.f-15e.info/joomla/technology/avionics/66-iff-system, and the reference emission pulse for each operation mode of each peer identification radar The reference reception pulse may have a form as shown in FIG. 3, for example.

Hereinafter, the operation of detecting the peak power using the first quiz providing and the peak power detecting unit 110, the first band converting unit 140, and the first transceiver 170 will be described.

4 is a block diagram showing a first question providing unit and a peak power detecting unit 110, a first band converting unit 140, and a first transceiver 170 of a peer identification interrogator 100 according to an embodiment of the present invention. to be.

4, the first query providing and peak power detecting unit 110 includes a first digital analog converter (DAC) 112, a first transmitting peak power detecting unit 114, and a first receiving peak power detecting unit 116 . In addition, the first band converter 140 includes a first up-converter 142, a first down-conversion unit 144, and a first down-conversion unit 146. In addition, the first transceiver 170 includes a first power amplifier 172 and a first low noise amplifier 174.

The first DAC 112 converts the question signal to be transmitted into an analog signal and outputs the analog signal to the first up-converter 142.

The first up-converter 142 up-converts the frequency band of the interrogation signal provided by the first DAC 112 to the RF band.

The first power amplifier 172 amplifies the power of the up-converted interrogation signal to a predetermined value and outputs the amplified interrogation signal to the first power amplifier 172.

The first antenna 11 transmits the amplified question signal toward the target.

The interrogation signal sent from the first power amplifier 172 to the first antenna 11 is coupled to the first transmission down-converter 144 through a feedback path.

The first transmission down-converter 144 receives the inquiry signal amplified and transmitted from the first power amplifier 172 through a feedback path, and downconverts the frequency band to the IF band.

The first transmission peak power detection unit 114 compares the pulse of the down-converted question signal with the predetermined reference transmission pulse in the first transmission down-converter unit 144, and outputs the delayed time when the question signal is transmitted, (Hereinafter, referred to as 'question delay time') and detect the peak power of the down-converted question signal using the detected question delay time.

5 is a block diagram illustrating a first transmission peak power detector 114 according to an embodiment of the present invention.

5, a first transmission peak power detector 114 according to an embodiment of the present invention includes a detector 510, an actual pulse generator 520, a reference pulse generator 530, a delay detector 540, an ADC Analog Digital Converter, 550) and a peak detector 560.

The detector 510 converts the power (unit: dBm) of the down-converted question signal in the first transmission down-conversion unit 144 into a voltage (unit: Volt) and outputs it to the actual pulse generator 520 and the ADC 550 can do.

The actual pulse generator 520 may generate the actual question pulse based on the voltage of the question signal output from the detector 510. [ That is, the actual pulse generator 520 may receive the converted output from the detector 510 as a trigger to generate the actual question pulse.

More specifically, the counter (not shown) of the actual pulse generator 520 can operate when the output value of the detector 510 exceeds a predetermined reference output value. For example, if the output of the detector 510 exceeds 1v (the reference output value, which may vary depending on the designer), the actual pulse generator 520 determines that the transmission of the interrogation signal is to begin, .

When the counting of the counter (not shown) of the actual pulse generator 520 reaches the time to switch from the Low (0) voltage to the High (1) voltage, that is, As time elapses, the actual pulse generator 520 may generate the actual question pulse. Thus, the generated actual question pulse has the same form as the reference dispatch pulse, but only the start point may be different. If there is no delay in sending the interrogation signal, the starting point of the actual interrogation pulse and the reference dispatching pulse will be the same.

The generated actual interrogation pulse is input to the delay detector 540. Thus, the delay detector 540 can receive the actual question pulse generated from the actual transmitted RF question signal from the actual pulse generator 520.

Also, the reference pulse generator 530 may generate a predetermined reference transmission pulse. For example, the reference pulse generator 530 initially maintains the low voltage, and the reference pulse generator 530 outputs a predetermined trigger signal (i.e., a fixed delay time) from the reference trigger signal by a counter (not shown) of the reference pulse generator 530 A reference emission pulse including an interval in which the emission pulse interval is opened, that is, a period in which the high voltage is maintained for a predetermined time, can be generated as shown in FIG. As described with reference to FIG. 2, the reference transmission pulse, which is the reference pulse for sending the interrogation signal, is opened only during the transmission period, and can maintain the high voltage.

At this time, the reference pulse generator 530 can generate different reference transmission pulses according to the operation modes of the peer identification radar described with reference to FIG. That is, the fixed delay time may be different for each operation mode, and may be stored in a register of the CPU that controls the peer identification radar, or a register of the FPGA.

The delay detector 540 compares the actual question pulse with the reference dispatch pulse and generates a delay interval D using a counter (not shown) of the delay detector 540 when a delay interval D occurs in the reference dispatch pulse interval The corresponding question delay time (t2-t1) can be counted. That is, the delay detector 540 detects the difference between the actual question pulse and the reference dispatch pulse, and counts the difference value to detect it as the question delay time.

Fig. 6 is a diagram showing an example of the reference dispatch pulse A, the actual question pulse A_Delay, and the actual delay pulse Delay.

6, when a delay section D occurs due to a difference between a reference dispatch pulse A and an actual question pulse A_Delay, the delay detector 540 outputs a delay section D of the delay pulse Del, (T2-t1) from the rising edge of the delay detector 540 until the counter (not shown) of the delay detector 540 starts counting and the delay section D ends. The delay detector 540 may detect the calculated time as the question delay time and deliver it to the peak detector 560. [

FIG. 7 is a simplified circuit diagram of the delay detector 540 shown in FIG.

Referring to FIG. 7, the delay detector 540 may use a PFD (Phase Frequency Detector) circuit, which is used in a PLL (Phase Locked Loop) design, as logic for detecting a delay. The delay detector 540, which is a PFD circuit, may include two D flip-flops and one NAND gate.

The operation of the delay detector 540 will be briefly described on the assumption that a delay has already occurred. First, in the delay period (D in Fig. 6), A is a high voltage (1) and B is a low voltage (0).

The top D flip-flop outputs 1 at the rising edge of the clock. The bottom D flip-flop outputs 0 at the rising edge of the clock. The NAND gate receiving the two signals receives the (1,0) input and outputs 1. While receiving 1 as a reset signal, the D flip-flop at the top keeps the A_delay output in the previous state. A small circle means a negative reset, that is, reset when it is zero.

At the end of the delay interval (i.e., the interval after D in FIG. 6), A is 1 and B is 1. The upper D flip-flop outputs 1 at the rising edge clock, and the lower D flip-flop outputs 1 at the rising edge clock. The NAND gate receiving the two signals receives the input (1,1) and outputs 0. 0 is received as a reset signal, and the A_delay output of the upper D flip-flop becomes 0. The A_delay signal is held at 1 as long as it is delayed.

Referring again to FIG. 5, the ADC 550 may convert a voltage output from the detector 510 into a digital signal and output the digital signal.

The peak detector 560 detects a delay time t2-t1 counted at a time point corresponding to an intermediate time value of a period during which the reference transmission pulse is high among the digital signals sequentially converted and input by the ADC 550, Can output the peak power value for the digital signal that has passed the predetermined time.

If delay is not generated when the question signal is transmitted, the peak detector 560 can output the peak power value for the digital signal at the time point corresponding to the intermediate time value of the reference transmission pulse since the delay time is zero.

On the other hand, the question signal amplified by the first power amplifier 172 and transmitted to the target by the first antenna 11 is reflected by the target and is received by the first antenna 11. Hereinafter, a signal received by the first antenna 11 as a target will be referred to as a " received signal ".

The first low-noise amplifier 174 low-noise amplifies the received signal received from the target.

The first reception down-converter 146 downconverts the frequency band of the amplified reception signal to the IF band.

The first reception peak power detection unit 116 compares the pulse of the down-converted reception signal from the first reception down-conversion unit 146 with a predetermined reference reception pulse and outputs a delay time of the reception signal (hereinafter referred to as a reception delay time And detects the peak power of the down-converted received signal using the detected received delay time.

The first reception peak power detection unit 116 may have the same structure as the first transmission peak power detection unit 114 as shown in FIG. Therefore, the first reception peak power detection unit 116 is also briefly described with reference to Fig.

5, the first reception peak power detector 116 includes a detector 510, an actual pulse generator 520, a reference pulse generator 530, a delay detector 540, an ADC 550 and a peak detector 560 ).

The detector 510 may convert the power of the down-converted question signal in the first receiving down-conversion unit 146 to a voltage.

The actual pulse generator 520 can generate an actual reception pulse based on the voltage of the reception signal output from the detector 510. [ For example, when the output value converted by the detector 510 exceeds a predetermined reference output value (for example, 1v), the actual pulse generator 520 determines that the reception of the reception signal is started, Can be operated to generate an actual reception pulse.

The reference pulse generator 530 may generate a predetermined reference reception pulse. For example, the reference pulse generator 530 maintains a low voltage initially, and when the reference pulse generator 530 reaches a time corresponding to the reception interval from the reference trigger signal by a counter (not shown), the reception pulse interval A reference reception pulse which is opened, that is, a high voltage is maintained for a predetermined time, can be generated as shown in FIG. At this time, the reference pulse generator 530 may generate different reference reception pulses according to the operation modes of the peer identification radar described with reference to FIG.

The delay detector 540 compares the actual reception pulse with the reference reception pulse, and when the delay interval (D ', D' = D or D '≠ D) occurs in the reference reception pulse interval, The receive delay time can be counted.

The ADC 550 may convert the voltage of the received signal output from the detector 510 into a digital signal and output the digital signal.

The peak detector 560 detects a peak value of a digital signal that is converted and input sequentially by the ADC 550 and which is delayed by a reception delay time counted at a time point corresponding to an intermediate time value of a period in which the reference reception pulse becomes high The peak power value can be output.

FIG. 8 is a diagram illustrating a peer identification interrogator 800 for transmitting / receiving peak power measurement according to another embodiment of the present invention.

The peer identification interrogator 800 for measuring transmission power and peak power according to another embodiment of the present invention shown in FIG. 8 includes a query providing and peak power detecting unit 810, a band transforming unit 820, (830, 840, 850).

The query providing and peak power detecting unit 810 includes a DAC 812, a transmitting peak power detecting unit 814, and a receiving peak power detecting unit 816.

The band transforming unit 820 includes an up-converting unit 822, a down-converting unit 824, and a down-converting unit 826.

The first to Nth transceivers 830, 840 and 850 include a power amplifier and a low noise amplifier.

8 is substantially the same as the operation of the peer-identification interrogator 100 described with reference to FIG. 1, and thus a detailed description thereof will be omitted.

The PI inquiry interrogator 100 shown in FIG. 1 includes a power amplifier of a transmission path and a low-noise amplifier of a reception path according to an active phased array structure, a band conversion unit, a question provision unit, and a peak power detection unit, While the peer identification interrogator 800 shown in FIG. 8 is provided with a band conversion unit, a question provision unit, and a peak power detection unit for common use by the radiation elements.

9 is a flowchart illustrating a method for transmitting / receiving peak power measurement of the peer identification interrogator 100 according to an embodiment of the present invention.

The method for transmitting / receiving peak power measurement shown in FIG. 9 can be operated by the peer identification interrogator 100 described with reference to FIG. 1 to FIG. Therefore, a detailed description of the method for transmitting / receiving peak power measurement with reference to FIG. 9 is omitted.

Referring to FIG. 9, the peer identification interrogator 100 may provide question signals for each of N channels in a single transmission / reception module or a plurality of transmission / reception modules (S910).

The peer identification interrogator 100 upconverts the frequency band of the interrogation signals provided in operation S910 (S920), amplifies the power of the upconverted interrogation signals, and transmits the amplified power to the antenna (S930).

In step S940, the peer identification interrogator 100 receives the transmitted question signals through the feedback path and detects the peak power of the transmission output for each of the N channels.

In addition, the peer identification interrogator 100 may receive the received signals reflected from the target through the feedback path to detect the peak power of the received output for each of the N channels (S950).

FIG. 10 is a flowchart for explaining step S940 of FIG. 9 in detail.

Referring to FIG. 10, in step S941, the peer identification interrogator 100 receives a question signal transmitted through an antenna through a feedback path, and downconverts the frequency band.

The peer identification interrogator 100 detects a delay time by comparing a pulse of the down-converted query signal with a preset reference transmission pulse, and detects the peak power of the down-converted query signal using the detected delay time (S942 ~ S947).

In more detail, in step S941, the peer identification interrogator 100 may convert the power of the down-converted question signal into a voltage and output the voltage.

The peer identification interrogator 100 generates an actual question pulse A_delay based on the voltage output from the step S942 (S943), and outputs the reference dispatch pulse A, which keeps the dispatch interval high, based on the reference trigger signal, (S944).

The peer identification interrogator 100 compares the generated actual interrogation pulse with the reference transmission pulse and counts the question delay time corresponding to the delay interval D when the delay interval D occurs in the reference transmission pulse interval (S945).

While the steps S943 through S945 are being performed, the interrogator 100 may convert the voltage output from the step S942 into a digital signal (S946).

Then, the interrogator 100 interrogates the digital signal, which has been passed through the interrogation delay time at a time point corresponding to the intermediate time value of the period in which the reference transmission pulse is high, The peak power value for the signal can be detected and output (S947).

11 is a flowchart for explaining step S950 of FIG. 9 in detail.

Referring to FIG. 11, the peer identification interrogator 100 may receive the received signal reflected from the target by coupling, amplify low-noise power, and downconvert the frequency band (S951, S952).

The peer identification interrogator 100 detects a delay time by comparing a pulse of the down-converted received signal with a predetermined reference reception pulse, and detects the peak power of the down-converted received signal using the detected delay time (S953 ~ S958).

More specifically, the interrogator 100 interrogates the power of the down-converted received signal in step S952 and outputs the converted signal as a voltage (step S953).

The peer identification interrogator 100 generates an actual reception pulse based on the voltage output from the step S953 (S954), and generates a reference reception pulse for keeping the reception interval high in accordance with the reference trigger signal S955).

The peer identification interrogator 100 compares the generated actual reception pulse with the reference reception pulse and counts the reception delay time corresponding to the delay interval D 'when the delay interval D' occurs in the reference reception pulse interval (S956).

While the steps S954 to S956 are being performed, the interrogator 100 may convert the voltage of the received signal output from the step S953 into a digital signal (S957).

Then, the interrogation ID interrogator (100) receives intermittent digital signals from the digital signals sequentially converted by the digital interrogator (100) The peak power value for the signal can be detected and output (S958).

Meanwhile, the method for transmitting / receiving peak power measurement of the peer identification interrogator according to the present invention may be provided in a recording medium readable by a computer by tangibly embodying a program of instructions for implementing the method, Can be easily understood by a person skilled in the art.

That is, the method for transmitting / receiving peak power measurement of the peer identification interrogator according to the present invention can be implemented in a form of a program that can be performed through various computer means, and can be recorded on a computer-readable recording medium, The medium may include program instructions, data files, data structures, etc., alone or in combination. The computer-readable recording medium may be any of various types of media such as magnetic media such as hard disks, optical media such as CD-ROMs and DVDs, and optical disks such as ROMs, RAMs, flash memories, And hardware devices specifically configured to store and execute program instructions.

Thus, the present invention can also provide a program stored on a computer readable recording medium carried on a computer for controlling said peer identification interrogator to implement a method for transmitting and receiving peak power measurements of a peer identification interrogator.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that numerous modifications and variations can be made to the present invention without departing from the scope of the present invention. Accordingly, all such modifications and variations are intended to be included within the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: Peer Identification Questioner
110, 120, and 130: providing first to third questions, and peak power detectors
140, 150, 160: First to third band converters
170, 180, 190: first to third transceivers
112: first DAC 114: first transmission peak power detector
116: first receiving peak power detecting unit 142: first band converting unit
144: first transmission down-converter 146: first reception down-
172: first power amplifier 174: first low noise amplifier

Claims (11)

A peer identification interrogator for measuring transmit and receive peak power of at least one of an active phased array radar and a passive phased array radar,
A plurality of question providing and peak power detectors for providing question signals for each of N channels;
A plurality of band converters for up-converting a frequency band of the question signals provided from the plurality of question providing and peak power detecting units; And
A plurality of transceivers for amplifying the power of the up-converted Q signals and transmitting the amplified signals to an antenna, and for providing the received signals reflected from the target to the plurality of band converters via a feedback path; / RTI >
Wherein the plurality of band converters downconvert the frequency bands of the received interrogation signals and the received signals,
The plurality of question providing and peak power detecting units detect a delay time of the down-converted question signals and received signals, respectively, and output the down-converted question signals and the down- Detecting peak power for received signals,
Each of the plurality of transceivers comprising:
A power amplifier for amplifying the power of the upconverted question signal; And
And a low noise amplifier for amplifying the low noise power of the received signal reflected from the target after the amplified interrogation signal is sent to the antenna,
The plurality of band transformers are respectively connected to a plurality of band-
An up-converting unit for up-converting a frequency band of the question signal provided by the question providing and peak power detecting unit;
A down converter for downconverting a frequency band by receiving a question signal amplified by the power amplifier and sent to an antenna through the feedback path; And
And a receiving downconverting unit for downconverting the frequency band of the low noise amplified receiving signal in the low noise amplifier,
Wherein the plurality of question provisioning and peak power detecting units are respectively provided with:
A DAC (Digital Analog Converter) for converting the question signal into an analog signal and outputting the analog signal to the up-converter;
The transmission down-converter detects a delay time of the question signal (hereinafter, referred to as 'question delay time') by comparing a pulse of the down-converted question signal with a predetermined reference dispatch pulse, A transmitted peak power detector for detecting a peak power of the down-converted question signal; And
The reception down-converter converts the down-converted reception signal to a predetermined reference reception pulse to detect a delay time of the reception signal (hereinafter, referred to as reception delay time) And a peak power detector for detecting the peak power of the down-converted received signal using the peak power detector. delete delete delete The method according to claim 1,
Wherein the transmission peak power detection unit comprises:
A detector for converting the power of the down-converted Q signal into a voltage and outputting the converted voltage;
An actual pulse generator for generating an actual question pulse based on a voltage output from the detector;
A reference pulse generator for generating the predetermined reference transmission pulse;
A delay detector for comparing the actual question pulse with the reference dispatch pulse to count a dispatch delay time corresponding to the delay interval when a delay interval occurs;
An ADC (Analog Digital Converter) for converting the voltage of the question signal output from the detector into a digital signal; And
A peak power value for a signal that has elapsed by the counted transmission delay time at a time point corresponding to an intermediate time value of an interval during which the reference transmission pulse is high among the digital signals sequentially converted and input by the ADC A peer identification interrogator for measuring transmission and reception peak power. The method according to claim 1,
Wherein the reception peak power detection unit comprises:
A detector for converting the power of the down-converted received signal into a voltage and outputting the converted voltage;
An actual pulse generator for generating an actual reception pulse based on a voltage output from the detector;
A reference pulse generator for generating the predetermined reference reception pulse;
A delay detector for comparing the actual reception pulse with the reference reception pulse to count a reception delay time corresponding to the delay interval when a delay interval occurs;
An ADC (Analog Digital Converter) for converting the voltage of the received signal output from the detector into a digital signal; And
A peak power value for a signal that has elapsed by the counted reception delay time at a time point corresponding to an intermediate time value of an interval during which the reference reception pulse is high among the digital signals sequentially converted and input by the ADC A peer identification interrogator for measuring transmit / receive peak power. delete delete delete delete delete

Images