KR20220092143A - Apparatus and method for performing data communication using radar a signal - Google Patents

Abstract

The present disclosure relates to an apparatus and method for performing data communication using a radar signal. According to the present disclosure, in a communication system using a Quadrature Phase Shift Keying (QPSK) method in which an in-phase (I) signal and a quadrature (Q) signal constitute independent channels, a transmitter comprises: a chirp signal generator for generating a chirp signal; a data modulator generating modulated data by converting a phase of data in at least one period based on timing information concerning a plurality of periods of a first signal obtained by synthesizing the chirp signal and a data signal; a signal transceiver for transmitting a radio frequency (RF) signal generated based on the modulated data and receiving a response signal from a target; and a chirp signal recovery performing data demodulation using the response signal.

Description

Apparatus and method for performing data communication using a radar signal

BACKGROUND The present disclosure generally relates to a radar system, and more particularly, to an apparatus and method for performing data communication using a radar signal.

The radar system directs a system for emitting electromagnetic waves to a target and detecting a distance between the radar device and the target or the shape of the target using the reflected wave reflected from the target. The performance of the radar system is to be determined by considering the distance resolution that distinguishes targets located in close proximity in the same direction and the azimuth resolution that distinguishes targets located in close proximity at the same distance in order to identify the shape of the target and the distance to the target. In general, the meaning of increasing the resolution of the radar system indicates the meaning of increasing the distance resolution.

Recent military radar systems require high resolution performance of 1 m or less, and identify the location of a target by transmitting and receiving RF (radio frequency) signals. In order to transmit/receive an RF signal, a general radar system uses a chirp signal whose frequency increases according to a period.

In order to smoothly transmit and receive data in a data communication system, the transmitter converts signal information to be transmitted into an appropriate waveform form such as signal strength, displacement, frequency, and phase to correspond to channel characteristics of a transmission medium. In addition, the receiver may extract the original information signal from the signal converted into an appropriate waveform according to channel characteristics. Here, the procedure for converting the signal information to correspond to the channel characteristics of the transmission medium is called modulation, and the procedure for restoring the modulated and transmitted signal to the original information signal waveform is called demodulation. .

According to a recent modulation method, a phase shift keying method and a quadrature amplitude modulation (QAM) modulation method that modulates the phase and amplitude are widely used due to their excellent spectral efficiency and reception performance. Currently, there are four types of phase modulation schemes: binary phase shift keying (BPSK), which performs phase shift modulation in the form of two other sine waves by changing the phase by 180 degrees depending on the digital signal, and, unlike BPSK, by giving a phase change of 90 degrees QPSK (quadrature phase shift keying) is used to transmit digital symbols of

According to the prior art, since a radar system has been used only for detecting a target and a data communication system has been used for transmitting and receiving data, time and frequency resources cannot be efficiently operated. Accordingly, a technology for efficiently operating a system using both radar and data communication is required.

Based on the above discussion, the present disclosure provides an apparatus and method for performing data communication using a radar signal in a radar system.

According to various embodiments of the present disclosure, in a communication system using a quadrature phase shift keying (QPSK) method in which an in-phase (I) signal and a quadrature (Q) signal configure channels independent of each other, a transmitting apparatus is a chirp signal generator for generating a chirp signal; a data modulator configured to generate modulated data by converting a phase of data in at least one period based on timing information regarding a plurality of periods of a first signal in which the chirp signal and the data signal are synthesized; a signal transceiver for transmitting a radio frequency (RF) signal generated based on the modulated data and receiving a response signal from a target; and a chirp signal recovery for performing data demodulation using the response signal.

According to another embodiment, the data modulator includes: a peak detector for detecting a first timing indicating a peak value of a frequency in the I path of the chirp signal; a zero detector for detecting a second timing indicating a zero value of a frequency in the Q path of the chirp signal; and a modulator that modulates data on the I path based on the first timing and modulates data on the Q path based on the second timing.

According to another embodiment, in the transmitting device, the response signal includes a signal from which the RF signal is reflected based on a corner reflector of the target.

According to another embodiment, the transmitting device It further includes a position determiner for determining the position of the target based on the demodulated data output from the chirp signal recovery.

According to an embodiment of the present disclosure, a radar system includes a chirp signal generator for generating a chirp signal including input data, and timing information regarding a plurality of periods of a first signal in which the chirp signal and the data signal are synthesized. based on a data modulator for generating modulated data by converting the phase of data in at least one period, a signal transceiver for transmitting a radio frequency (RF) signal generated based on the modulated data and receiving a response signal from a target; and a chirp signal recovery for performing data demodulation by using the response signal. and a data demodulator for performing data demodulation on the RF signal from the transmitting device, a detection identifier for identifying that the position of the device has been detected by the transmitting device based on an output signal of the data demodulator, and a response signal corresponding to the RF signal It includes a receiving device including a second signal transceiver for transmitting the.

According to another embodiment, in a communication system using a quadrature phase shift keying (QPSK) method in which an in-phase (I) signal and a quadrature (Q) signal configure channels independent from each other, the operation of the transmitter The method includes generating a chirp signal; generating modulated data by converting a phase of data in at least one period based on timing information regarding a plurality of periods of a first signal in which the chirp signal and the data signal are synthesized; transmitting a radio frequency (RF) signal generated based on the modulated data; receiving a response signal from the target receiving the RF signal; and generating demodulation data using the response signal.

According to another embodiment, the generating of the modulated data may include: detecting a first timing indicating a peak value of a frequency in an I path of the chirp signal; detecting a second timing indicating a zero value of a frequency in the Q path of the chirp signal; and performing data modulation on the I path based on the first timing and data modulation on the Q path based on the second timing.

According to another embodiment, the method of operating the transmitter further includes determining the position of the target based on demodulated data.

Various respective aspects and features of the invention are defined in the appended claims. Combinations of features of the dependent claims may be combined with features of the independent claims as appropriate, not just expressly set forth in the claims.

In addition, one or more features selected in any one embodiment described in this disclosure may be combined with one or more features selected in any other embodiment described in this disclosure, and alternatives to these features a combination of at least partially alleviates one or more technical problems discussed in the present disclosure, or at least partially alleviates technical problems that can be discerned by a person skilled in the art from the present disclosure, and furthermore features of embodiments ( The combination is possible, provided that a specific combination or permutation so formed of the embodiment features is not understood by a person skilled in the art as incompatible.

In any described example implementation, two or more physically separate components may alternatively be integrated into a single component if their integration is possible, and the single component so formed If the same function is performed by , the integration is possible. Conversely, a single component of any embodiment described in the present disclosure may alternatively be implemented with two or more separate components that achieve the same function, where appropriate.

It is an object of certain embodiments of the present invention to solve, mitigate, or eliminate, at least in part, at least one of the problems and/or disadvantages associated with the prior art. Certain embodiments aim to provide at least one of the advantages described below.

The apparatus and method according to various embodiments of the present disclosure enable efficient use of time frequency resources by performing data communication using a radar signal in a radar system.

Effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present disclosure belongs from the description below. will be.

1 illustrates a transmitting apparatus in a radar system according to various embodiments of the present disclosure.
2 illustrates a configuration of a radar system according to various embodiments of the present disclosure.
3 is a block diagram of a transmitting apparatus and a receiving apparatus in a radar system according to various embodiments of the present disclosure.
4A is a diagram illustrating a timing detection graph of a chirp signal in a radar system according to various embodiments of the present disclosure;
4B illustrates a data modulation graph in a radar system according to various embodiments of the present disclosure.
5 illustrates a chirp signal recovery graph in a radar system according to various embodiments of the present disclosure.
6 illustrates a graph indicating an impulse response function in a radar system according to various embodiments of the present disclosure.
7 is a flowchart illustrating a method of operating a transmitter in a radar system according to various embodiments of the present disclosure.

Terms used in the present disclosure are used only to describe specific embodiments, and may not be intended to limit the scope of other embodiments. The singular expression may include the plural expression unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meanings as commonly understood by one of ordinary skill in the art described in the present disclosure. Among the terms used in the present disclosure, terms defined in a general dictionary may be interpreted with the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in the present disclosure, ideal or excessively formal meanings is not interpreted as In some cases, even terms defined in the present disclosure cannot be construed to exclude embodiments of the present disclosure.

In various embodiments of the present disclosure described below, a hardware access method will be described as an example. However, since various embodiments of the present disclosure include technology using both hardware and software, various embodiments of the present disclosure do not exclude a software-based approach.

Hereinafter, the present disclosure relates to an apparatus and method for performing communication in a radar system. Specifically, the present disclosure describes a technique for transmitting or receiving data using a radar signal in a radar system.

Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present disclosure pertains can easily implement it. However, since the technical spirit of the present disclosure may be modified and implemented in various forms, it is not limited to the embodiments described herein. In the description of the embodiments disclosed in the present specification, when it is determined that a detailed description of a related known technology may obscure the gist of the present disclosure, a detailed description of the known technology will be omitted. The same or similar components are given the same reference numerals, and overlapping descriptions thereof will be omitted.

In the present specification, when an element is described as being "connected" with another element, it includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. When an element "includes" another element, it means that another element may be further included without excluding another element in addition to other elements unless otherwise stated.

Some embodiments may be described in terms of functional block configurations and various processing steps. Some or all of these functional blocks may be implemented in various numbers of hardware and/or software configurations that perform specific functions. For example, the functional blocks of the present disclosure may be implemented by one or more microprocessors, or by circuit configurations for a given function. The functional blocks of the present disclosure may be implemented in various programming or scripting languages. The functional blocks of the present disclosure may be implemented as an algorithm running on one or more processors. A function performed by a functional block of the present disclosure may be performed by a plurality of functional blocks, or functions performed by a plurality of functional blocks in the present disclosure may be performed by one functional block. In addition, the present disclosure may employ prior art for electronic configuration, signal processing, and/or data processing, and the like.

In addition, in the present disclosure, in order to determine whether a specific condition is satisfied (satisfied) or satisfied (fulfilled), an expression of more than or less than is used, but this is only a description to express an example, and more or less description is excluded not to do Conditions described as 'more than' may be replaced with 'more than', conditions described as 'less than', and conditions described as 'more than and less than' may be replaced with 'more than and less than'.

1 illustrates a transmitter 100 in a radar system according to various embodiments of the present disclosure. 1 illustrates a transmission apparatus 100 according to various embodiments of the present disclosure. Hereinafter used '… wealth', '… The term 'group' means a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software. The transmitter 100 includes a communication unit 110 , a storage unit 120 , and a control unit 130 . At least one of the storage unit, the communication unit, and the control unit may be operatively coupled to at least one processor. 1 illustrates a functional block of a transmitting apparatus, it may be applied to a functional block of a receiving apparatus.

The communication unit 110 performs functions for transmitting and receiving signals through a wireless channel. All or part of the communication unit 110 may be referred to as a transmitter, a receiver, or a transceiver. According to an embodiment of the present disclosure, the communication unit 110 may transmit or receive data using an RF signal.

The storage unit 120 stores data such as a basic program, an application program, and setting information for the operation of the receiving device. The storage unit 120 may be configured as a volatile memory, a non-volatile memory, or a combination of a volatile memory and a non-volatile memory. The storage unit 120 may provide stored data according to the request of the control unit 130 .

The controller 130 controls overall operations of the transmitter. For example, the control unit 130 may transmit and receive signals through the communication unit 110 . Also, the control unit 130 may record data in the storage unit 120 . According to an embodiment of the present disclosure, the controller may perform channel encoding by performing constellation mapping. According to various embodiments of the present disclosure, the controller 130 may generate a control signal instructing generation of a chirp signal, a control signal instructing data modulation, and a signal instructing data demodulation. According to various embodiments of the present disclosure, the controller 130 may analyze data using demodulated data. For example, the controller 130 may control the receiving device to perform operations according to various embodiments to be described later.

2 illustrates a configuration 200 of a radar system according to various embodiments of the present disclosure. Referring to FIG. 2 , the radar system according to the present disclosure includes a transmitting device 210 and a receiving device 260 . The transmitter 210 modulates and transmits a signal based on the chirp signal and input data according to the QPSK modulation method, and the receiving apparatus 250 demodulates the data signal modulated according to the QPSK method, and transmits the received signal. Indicate the reflecting device. Although the present disclosure exemplifies the case of using the QPSK modulation and demodulation method, an offset quadrature phase shift keying (OQPSK) modulation and demodulation method in which the clocks of the I channel and the Q channel are shifted by 1/2 bit period in QPSK may be used.

The transmitting device 210 includes a chirp signal generator 211 , a data modulator 213 , a signal transceiver 219 , a chirp signal recovery 221 , and a position determiner 223 . In the radar system according to an embodiment of the present disclosure, the transmitter 210 instructs the radar.

The chirp signal generator 211 performs a function of generating a chirp signal. The chirp signal indicates a signal whose frequency and phase change continuously with time. In general, the frequency of the chirp signal is linearly changed from a low frequency to a high frequency. The chirp signal generator 211 indicates a device or part that generates a chirp signal.

The data modulator 213 performs a function of modulating data using the QPSK modulation method. The data modulator 213 includes a serial-to-parallel converter that separates input data into an I signal and a Q signal, a local oscillator that supplies a reference frequency source, a phase shifter that separates the reference frequency source signal into two orthogonal carriers, and a signal It may include a mixing unit for synthesizing. According to an embodiment of the present disclosure, the data modulator 213 may include a peak detector 215 for detecting a timing of a peak of a frequency and a zero detector 217 for detecting a timing of a zero of a frequency. can Although the present disclosure shows that the peak detector 215 and the zero detector 217 are included in the modulator, the transmitting device is configured such that the peak detector 215 and the zero detector 217 are disposed outside the modulator to perform the same function in can be

The signal transceiver 219 performs a function of transmitting or receiving a signal. According to an embodiment of the present disclosure, the signal transceiver 219 may perform a function of transmitting a modulated signal to a receiving device or receiving a signal reflected from the receiving device.

The chirp signal recovery 221 performs a function of recovering the received data. According to an embodiment of the present disclosure, the chirp signal recovery 221 may perform a demodulation procedure by receiving a signal reflected from a receiving device or a signal transmitted by the receiving device. According to an embodiment of the present disclosure, the chirp signal recovery 221 may recover the reflected chirp signal.

The position determiner 223 may perform a function for determining the position of the receiving device based on a signal reflected from the receiving device. According to an embodiment of the present disclosure, the location determiner 223 may determine the location of the receiving device based on demodulated data output from the chirp signal recovery.

The receiving device 260 includes a signal transceiver 261 , a signal reflector 263 , a data demodulator 265 , and a detection identifier 267 . In the radar system according to an embodiment of the present disclosure, the receiving device 260 indicates a target.

The signal transceiver 261 and the signal reflector 263 receive the RF signal generated in response to the modulated signal from the transmitting device, and perform a function of reflecting the RF signal. According to an embodiment of the present disclosure, the signal transceiver 361 may receive a signal from the receiving device or transmit identification information about the receiving device to the transmitting device. The receiving device may check the data by performing a data demodulation procedure on the signal data received using the signal transceiver 261 . The receiving device may reflect the signal to the transmitting device using the signal reflector 263 . The reflected signal is divided into an I signal and a Q signal, and each can be stored as digital data and then transmitted.

The data demodulator 265 performs a function of demodulating the received data. The demodulator 265 may perform a function of reconstructing a channel-encoded signal based on constellation mapping. According to an embodiment of the present disclosure, the data demodulator may recover the reflected chirp signal.

The detection identifier 267 performs a function of identifying that the receiving device has been detected by the transmitting device. According to an embodiment of the present disclosure, the detection identifier 267 may identify the radar signal of the transmitting device based on the signal demodulated through the data demodulator 265 and identify that the receiving device is detected by the radar of the transmitting device. have.

3 is a block diagram 300 of a transmitting apparatus and a receiving apparatus in a radar system according to various embodiments of the present disclosure.

Referring to FIG. 3 , the radar system according to the present disclosure includes a transmitting device 310 and a receiving device 360 .

The transmitting device 310 includes a chirp signal generator 311 , a data modulator 313 , a transceiver 315 , a chirp signal recovery 317 , and a position determiner 319 .

The chirp signal generator 311 performs a function of generating a chirp signal whose frequency and phase continuously change with time. According to an embodiment of the present disclosure, the chirp signal generator 311 generates a chirp signal and inputs the generated chirp signal to the data modulator 313 .

The data modulator 313 performs data modulation by receiving the chirp signal and the data signal received from the chirp signal generator. According to an embodiment of the present disclosure, the data modulator 313 distinguishes a period of a chirp signal and converts a phase of data in at least one period among the divided periods. According to an embodiment of the present disclosure, a method of performing data modulation may use a QPSK method. Accordingly, the phase shift is a QPSK signal composed of four and includes a phase shift with respect to four phases in each of the in-phase (I) path and the quadrature (Q) path. According to an embodiment of the present disclosure, the data modulator 313 performs binary phase shift keying (BPSK) modulation using two orthogonal carriers on the chirp signal and the I signal and the Q signal related to the input data and synthesizes them, thereby QPSK Can generate modulated signals

The transceiver 315 performs a function of transmitting or receiving a signal. The modulated signal is orthogonally modulated by the RF circuit, and the RF signal is transmitted to the receiving device through the transceiver 315 . According to an embodiment of the present disclosure, the transceiver 315 may transmit an RF signal generated based on the modulated signal to the receiving device. According to an embodiment of the present disclosure, the transceiver 315 may receive the RF signal reflected from the receiving device.

When the signal reflected from the receiving device is received, the chirp signal recovery 317 performs a function of restoring the signal. According to an embodiment of the present disclosure, the chirp signal recovery 317 may recover a reflected chirp signal or a signal transmitted by the receiving device.

The position determiner 319 may determine a position of the receiving device based on a signal reflected from the receiving device. According to an embodiment of the present disclosure, the position determiner 319 may determine the location of the receiving device or the shape of the receiving device based on demodulated data output from the chirp signal recovery.

The receiving device 360 includes a transceiver 361 , a data demodulator 363 , a detection identifier 365 , and a reflector 367 .

It performs a function of receiving an RF signal from the transceiver 361 and the transmitting device. According to an embodiment of the present disclosure, the transceiver 361 may receive a signal from the receiving device or transmit identification information about the receiving device to the transmitting device.

The data demodulator 363 performs a function of restoring the received signal. The data demodulator 363 may demodulate the encoded signal based on the constellation mapping. According to an embodiment of the present disclosure, the receiving device detects data for each period of the received signal. According to an embodiment of the present disclosure, the data demodulator 363 may recover a signal transmitted by the transmitting device.

The detection identifier 365 performs a function of identifying that the receiving device has been detected by the transmitting device. According to an embodiment of the present disclosure, the detection identifier 365 may identify the radar signal of the transmitting device based on the signal demodulated through the data demodulator 363, and identify that the receiving device is detected by the radar of the transmitting device. have.

The reflector 367 functions to reflect a signal. The reflected signal is divided into an I signal and a Q signal, and each can be stored as digital data and then transmitted. According to an embodiment of the present disclosure, the reflector 367 may include a corner reflector for reflecting radio waves using a conductive plate in the radar system.

According to an embodiment of the present disclosure, a transmitting device transmits a signal generated by adding data to a chirp signal to a receiving device. Accordingly, the reception device may receive the signal and transmit a response signal corresponding to the transmission signal or may reflect the transmission signal. The radar signal reflected from the receiving device is divided into an I signal and a Q signal, respectively, and is transmitted after being stored as digital data. As the reflected signal is data transmitted, the transmitting device may identify the data by restoring a phase according to the data.

4A illustrates a timing detection graph 400 of a chirp signal in a radar system according to various embodiments of the present disclosure. 4A illustrates a method of modulating a phase based on a QPSK modulation scheme. Referring to FIG. 4A , the horizontal axis indicates time and the vertical axis indicates amplitude. The amplitude may be determined according to a user's setting.

Referring to FIG. 4A , the timing detection graph 400 of the chirp signal includes an I signal graph 410 and a Q signal graph 420 . The chirp signal may be divided into an I signal using an in-phase channel and a Q signal using a quadrature channel based on the QPSK modulation scheme. The I signal and the Q signal have a phase difference of 90 degrees based on the phase shift.

According to the I signal graph 410, each period of the I signal may be divided based on a peak value. According to an embodiment of the present disclosure, the I signal has a peak value at the first to fourth timings 411 to 414 . Periods of the I signal may be divided based on the first to fourth timings 411 to 414 .

According to the Q signal graph 420, each period of the Q signal may be divided based on a zero value. According to an embodiment of the present disclosure, the Q signal has a zero value at the fifth to eighth timings 421 to 424 . Periods of the Q signal may be divided based on the fifth to eighth timings 421 to 424 . The fifth to eighth timings may correspond to the first to fourth timings.

When the transmitting apparatus modulates data, the information indicating the first to fourth timings 411 to 414 that are the peak values of the I signal and the fifth to the eighth timings 421 to 424 that are the zero values of the Q signal are indicated information is available. The transmitting apparatus determines the phase in at least one period divided based on information indicating the first to fourth timings 411 to 414 and the information indicating the fifth to eighth timings 421 to 424. You can transform the data by transforming it.

4B illustrates a data modulation graph 450 in a radar system according to various embodiments of the present disclosure. Referring to FIG. 4B , the horizontal axis indicates time and the vertical axis indicates amplitude. The amplitude may be determined according to a user's setting.

Referring to FIG. 4B , the data modulation graph 450 includes an I signal modulation graph 460 and a Q signal modulation graph 470 .

According to the I signal modulation graph 460 , data modulation may be performed based on the timing information determined in FIG. 4A . The plurality of timings 461 to 464 illustrated in FIG. 4B correspond to the first to fourth timings 411 to 414 illustrated in FIG. 4A , respectively. According to an embodiment of the present disclosure, a first period to a fifth period may be distinguished based on the plurality of timings 461 to 464 . The transmitter may change the phase of the signal corresponding to the second period and the fourth period by 180 degrees among the first to fifth periods.

According to the Q signal modulation graph 470 , data modulation may be performed based on the timing information determined in FIG. 4A . The plurality of timings 471 to 474 illustrated in FIG. 4B correspond to the fifth to eighth timings 421 to 424 illustrated in FIG. 4A , respectively. According to an embodiment of the present disclosure, a sixth period to a tenth period may be distinguished based on the plurality of timings 471 to 474 . The transmitter may change the phase of the signal corresponding to the seventh period and the ninth period by 180 degrees among the sixth to tenth periods.

5 illustrates a chirp signal recovery graph 500 in a radar system according to various embodiments of the present disclosure. 5 exemplifies the results of the chirp signal recovery performed by the chirp signal recovery 317 and the data demodulator 363 of FIG. 3 . Referring to FIG. 5 , the horizontal axis indicates time and the vertical axis indicates amplitude. The amplitude may be determined according to a user's setting.

The chirp signal recovery 317 of the transmitting device receives the signal reflected from the receiving device and proceeds with a procedure for recovering the signal. As shown in FIG. 4 , the I signal and the Q signal transmitted by the transmitting device are shown as in FIG. 5 through the chirp signal recovery procedure. Referring to FIG. 5 , the I signal 510 according to the chirp signal recovery result corresponds to the I signal graph 410 of FIG. 4A . The Q signal 520 according to the chirp signal recovery result corresponds to the Q signal graph 420 of FIG. 4A .

6 illustrates a graph 600 indicating an impulse response function in a radar system according to various embodiments of the present disclosure. 6 illustrates an impulse response function (IRF) result measured by a transmitting device. According to FIG. 6 , it can be confirmed that the ideal IRF 610 graph and the IRF graph measured by the transmitter are determined to be substantially the same.

7 is a flowchart 700 of a method of operating a transmitter in a radar system according to various embodiments of the present disclosure. 7 illustrates an operation method of the transmitting apparatus 310 of FIG. 3 .

Referring to FIG. 7, in step 701, the transmitting device generates a chirp signal. Here, the transmitting device may instruct the radar. According to an embodiment of the present disclosure, the transmitting device may generate a chirp signal using a chirp signal generator disposed inside the transmitting device. According to another embodiment of the present disclosure, the chirp signal generator is disposed outside the transmitting device A chirp signal may be received from a separate chirp signal generating device.

In step 703, the transmitting apparatus generates modulated data by transforming the phase of data in at least one period based on timing information about a plurality of periods of the first signal in which the chirp signal and the data signal are synthesized. The transmitting apparatus may generate a QPSK modulated signal by detecting timing information of the I signal and the Q signal of the chirp signal, and converting a phase of a frequency based on the timing information. According to an embodiment of the present disclosure, the transmitting device detects a first timing indicating a peak value of a frequency in the I path of the chirp signal, and indicates a zero value of the frequency in the Q path of the chirp signal a second timing may be detected, data modulation on the I path based on the first timing and data modulation on the Q path based on the second timing may be performed.

In step 705, the transmitting device transmits an RF signal generated based on the modulated data. According to an embodiment of the present disclosure, a transmitting apparatus generates an RF signal for transmission through a wireless channel using modulated data, and transmits the generated RF signal to a target. According to an embodiment of the present disclosure, a target points to a receiving device.

In step 707, the transmitting device receives a response signal from the target that has received the RF signal. According to an embodiment of the present disclosure, the response signal includes a signal from which an RF signal is reflected based on a corner reflector of a target. According to another embodiment of the present disclosure, the response signal may include a data signal generated by the target based on a signal received from the transmitting device.

In step 709, the transmitting device generates demodulated data using the received response signal. The transmitting device may restore data based on the received response signal. According to an embodiment of the present disclosure, the transmitting apparatus may restore data through chirp signal recovery with respect to the received response signal. According to an embodiment of the present disclosure, the transmitting apparatus may further include determining the position of the target based on the demodulated data.

A radar system can be operated to perform a swarm mission in various fields, and is generally used to detect a target. When a radar system and a communication system are separated to perform a mission, the radar system stores data related to the radar mission and transmits separate data for communication with the target, or transmits the radar signal and the data signal by varying the frequency. must be transmitted Accordingly, when the radar and the communication system are separated and perform a mission, hardware configuration and resources are additionally required. Accordingly, when data is inserted into a transmission signal in the radar system, the transmitting device may receive data from the receiving device and quickly utilize the receiving device identification information including distance information.

Methods according to the embodiments described in the claims or specifications of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium are configured to be executable by one or more processors in an electronic device (device). One or more programs include instructions for causing an electronic device to execute methods according to embodiments described in a claim or specification of the present disclosure.

Such programs (software modules, software) include random access memory, non-volatile memory including flash memory, read only memory (ROM), electrically erasable programmable ROM (electrically erasable programmable read only memory, EEPROM), magnetic disc storage device, compact disc-ROM (CD-ROM), digital versatile discs (DVDs), or other It may be stored in an optical storage device or a magnetic cassette. Alternatively, it may be stored in a memory composed of a combination of some or all thereof. In addition, each configuration memory may be included in plurality.

In addition, the program is transmitted through a communication network consisting of a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WAN), or a storage area network (SAN), or a combination thereof. It may be stored on an attachable storage device that can be accessed. Such a storage device may be connected to a device implementing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may be connected to the device implementing the embodiment of the present disclosure.

In the specific embodiments of the present disclosure described above, elements included in the disclosure are expressed in the singular or plural according to the specific embodiments presented. However, the singular or plural expression is appropriately selected for the context presented for convenience of description, and the present disclosure is not limited to the singular or plural element, and even if the element is expressed in plural, it is composed of the singular or singular. Even an expressed component may be composed of a plurality of components.

Meanwhile, although specific embodiments have been described in the detailed description of the present disclosure, various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments and should be defined by the claims described below as well as the claims and equivalents.

Claims (9)

In a communication system using a quadrature phase shift keying (QPSK) method in which an in-phase (I) signal and a quadrature (Q) signal configure channels independent of each other, in a transmitting apparatus,
a chirp signal generator for generating a chirp signal;
a data modulator configured to generate modulated data by converting a phase of data in at least one period based on timing information regarding a plurality of periods of a first signal in which the chirp signal and the data signal are synthesized;
a signal transceiver for transmitting a radio frequency (RF) signal generated based on the modulated data and receiving a response signal from a target; and
and a chirp signal recovery for performing data demodulation using the response signal.
The method according to claim 1,
The data modulator
a peak detector for detecting a first timing indicating a peak value of a frequency in the I path of the chirp signal;
a zero detector for detecting a second timing indicating a zero value of a frequency in the Q path of the chirp signal; and
and a modulator configured to perform data modulation on the I path based on the first timing and data modulation on the Q path based on the second timing.
The method according to claim 1,
The response signal includes a signal in which the RF signal is reflected based on a corner reflector of the target.
The method according to claim 1,
The transmitter further comprising a position determiner for determining the position of the target based on the demodulated data output from the chirp signal recovery.
A chirp signal generator generating a chirp signal including input data, a phase of data in at least one period based on timing information about a plurality of periods of a first signal in which the chirp signal and the data signal are synthesized a data modulator for generating modulated data by converting Transmitting device comprising a chirp signal recovery to perform; and
a data demodulator for performing data demodulation on the RF signal from the transmitting device, a detection identifier for identifying that the position of the device has been detected by the transmitting device based on an output signal of the data demodulator, and a response signal corresponding to the RF signal A radar system comprising a receiving device comprising a second signal transceiver for transmitting.
In a communication system using a quadrature phase shift keying (QPSK) method in which an in-phase (I) signal and a quadrature (Q) signal configure channels independent of each other, in the operating method of a transmitting apparatus,
generating a chirp signal;
generating modulated data by converting a phase of data in at least one period based on timing information regarding a plurality of periods of a first signal in which the chirp signal and the data signal are synthesized;
transmitting a radio frequency (RF) signal generated based on the modulated data;
receiving a response signal from the target receiving the RF signal;
and generating demodulated data by using the response signal.
7. The method of claim 6,
The step of generating the modulated data comprises:
detecting a first timing indicating a peak value of a frequency in the I path of the chirp signal;
detecting a second timing indicating a zero value of a frequency in the Q path of the chirp signal;
and performing data modulation on the I path based on the first timing and data modulation on the Q path based on the second timing.
7. The method of claim 6,
The response signal includes a signal reflected by the RF signal based on a corner reflector of the target.
7. The method of claim 6,
Further comprising the step of determining the position of the target based on the demodulation data, the operating method of the transmitting device.

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