KR20190085687A - Apparatus for transmitting and receiving radar signal and method thereof - Google Patents

Abstract

According to an embodiment of the present invention, sequential block beam formation enables sequential detection from an important target, thereby quickly finding the important target while reducing a frame time more than a target detection method through a round-robin method used in conventional search beam scheduling. In addition, even in the presence of multiple paths, the target and a false target enter the same range bin, thereby allowing the target to be accurately identified without using a method of finding two known angles of arrival at once or complex adaptive beamforming.

Description

TECHNICAL FIELD [0001] The present invention relates to a radar transmission and reception apparatus,

The present invention relates to phase conjugate beamforming, and in particular, sequential detection from an important target is possible through sequential block beam forming, thereby reducing frame time compared to the round-robin method of target detection used in conventional search beam scheduling. The present invention relates to a radar transmitting and receiving apparatus and method capable of rapidly and rapidly finding important targets.

BACKGROUND ART [0002] Generally, a radar (Radio Detection and Ranging) (RADAR) is a device that includes a transmitter configuration and a receiver configuration, and is capable of detecting a distance and a direction of a target object by a signal reflected by a high- Based on the signal, the distance and speed of the subject are measured based on the frequency shift due to the Doppler effect, which includes the propagation speed of the radio wave, the propagation time, and reflected or scattered radio waves.

On the other hand, in such a radar, it is very important to perform beam forming on the detection target area.

FIG. 1 illustrates a conventional round-robin beamforming concept. In the round robin method, a detection target region is divided into unit regions, and beamforming is successively performed to each of the divided regions to detect a target In the beamforming method, there is a problem that the frame time is long and an important target is quickly found.

In the conventional beamforming, beamforming is performed by changing only the RX signal according to the characteristics of the target. When the multi-path 202 is present from the ground or the sea surface 200 as shown in FIG. 2, Since the target 250 is in the same range bin as the target 250 is in the range bin, it is difficult to distinguish the target. In order to identify such a target, a method of finding two angles of arrival or a complicated adaptive beam forming is used. .

Also, in the method of dividing the target by extracting a plurality of scattering points from one target as shown in FIG. 3, when the range resolution interval is narrow, in the conventional beam forming method, It is difficult to distinguish the target from the target. For this purpose, it is necessary to use a high-resolution distance resolution radar, and a large bandwidth is required.

(Patent Literature)

Korean Registered Patent No. 10-1311393 (Registered Date: September 16, 2013)

Accordingly, in one embodiment of the present invention, it is possible to sequentially detect an important target through sequential block beamforming, thereby reducing the frame time and reducing the time required for an important target And to provide a radar transmitting and receiving apparatus and method capable of quickly finding a radar.

The TX radar signal is transmitted to the detection area through the antenna array. The TX radar signal is transmitted to the detection area through the antenna array. In the radar transmission / reception device according to the embodiment of the present invention, A receiver for receiving a reflected RX radar signal through the antenna array; a weight setting unit for setting a weight for determining a beam forming direction of the TX radar signal, applying a TX radar signal to which the weight is applied to the antenna array, And a weight control unit for changing the weight based on the RX radar signal until a beam forming direction of the TX radar signal is formed in a specific direction in the detection area.

The weight control unit may set a conjugate complex conjugate of the RX radar signal to a weight of a next TX radar signal.

The weight control unit may control the TX radar signal to be transmitted to the entire detection area by setting the weight as a scalar value when the TX radar signal is initially transmitted to the detection area.

Also, the RX radar signal is a signal received by the antenna array that is reflected by a target located closest to the antenna array in the detection area, and wherein the weight control unit is configured to perform beamforming of the TX radar signal The conjugate complex value of the RX radar signal is repeatedly set to the weight of the next TX radar signal until the time when the direction is formed in the direction of the target.

The weight control unit may calculate a new weight such that a beam forming direction of the TX radar signal is a direction other than the specific direction when a beam forming direction of the TX radar signal is formed in the specific direction, And the calculated weight is set to the weight of the next TX radar signal.

[0027] According to another aspect of the present invention, there is provided a radar transceiver comprising: an antenna array including a plurality of antennas; a transmitter for transmitting a TX radar signal to the detection area through the antenna array; And a plurality of weights for determining a plurality of beamforming directions of the TX radar signal are set, and a plurality of TX radar signals to which the plurality of weights are applied, Signal to the antenna array and changing the plurality of weights based on an RX radar signal corresponding to each TX radar signal until a beam forming direction of each TX radar signal is formed in a specific direction within the detection area And a weight control unit.

Further, the weight control section sets the plurality of weights so that the plurality of TX radar signals are signals orthogonal to each other.

The weight control unit may set a conjugate complex conjugate of the RX radar signal to a weight of a next TX radar signal.

The weight control unit may set the plurality of weights as a scalar value so that each of the TX radar signals is transmitted to the entire detection area when the respective TX radar signals are first transmitted to the detection area. do.

The RX radar signal is a signal that is reflected by and reflected by a plurality of different targets located nearest to the antenna array in the detection area and received by the antenna array in each TX radar signal, The conjugate complex value of the RX radar signal corresponding to each TX radar signal is repeatedly set by the plurality of weights for the next TX radar signal until the time at which the beam forming direction of the radar signal is formed in the direction of each target .

When the beam forming direction of each of the TX radar signals is formed in the specific direction, the weight control unit sets a new plurality of weights so that the beam forming direction of each TX radar signal becomes the other direction except for the specific direction And the calculated plurality of weights are set to the plurality of weights of the next TX radar signal.

The method includes the steps of generating a TX radar signal to be transmitted to a detection area through an antenna array including a plurality of antennas, and transmitting the TX radar signal when the TX radar signal is applied, The method comprising the steps of: setting a weight to determine a beam forming direction of the TX radar signal; applying the weight to the TX radar signal; transmitting the weighted TX radar signal to the detection area via the antenna array; Receiving an RX radar signal reflected from the detection area through the antenna array, wherein the TX radar signal is reflected from the detection area, and transmitting the RX radar signal until the beam forming direction of the TX radar signal is formed in a specific direction in the detection area. And changing the weight based on the weight.

The modifying may further include setting a complex conjugate of the RX radar signal to a weight of a next TX radar signal.

The RX radar signal is also a signal received at the antenna array that is reflected by a target located closest to the antenna array in the detection region of the TX radar signal, The conjugate complex value of the RX radar signal is repeatedly set to the weight of the next TX radar signal until the time when the direction is formed in the direction of the target.

The method further includes the steps of calculating a new weight such that the beam forming direction of the TX radar signal is in a direction other than the specific direction when the beam forming direction of the TX radar signal is formed in the specific direction, And setting the calculated weight to the weight of the next TX radar signal.

The method includes the steps of generating a TX radar signal to be transmitted to a detection area through an antenna array including a plurality of antennas, and transmitting the TX radar signal when the TX radar signal is applied, The method comprising the steps of: setting a plurality of different weights to determine a plurality of beamforming directions of the plurality of weights; applying the plurality of weights to the TX radar signal; Transmitting an RX radar signal through the antenna array, wherein each TX radar signal is reflected from the detection area and returned through the antenna array; RX < / RTI > corresponding to each of the TX radar signals until it is formed in a specific direction in the area Based on further signal comprises the step of modifying the plurality of weights.

Further, the plurality of weights are set to values such that the plurality of TX radar signals are orthogonal to each other.

The modifying may further comprise setting a complex conjugate of the RX radar signal to a weight of a next TX radar signal.

Also, the RX radar signal is a signal that is reflected by and reflected by a plurality of different targets, wherein each TX radar signal is located closest to the antenna array in the detection area and is received at the antenna array, Repeating the conjugate complex value of the RX radar signal corresponding to each TX radar signal by the plurality of weights for the next TX radar signal until the time at which the beam forming direction of the TX radar signal is formed in the direction of each target .

In addition, the method may further comprise: when a beam forming direction of each TX radar signal is formed in each of the specific directions, a new plurality of weights, in which the beam forming direction of each TX radar signal is different from the specific direction, And setting the calculated plurality of weights to the plurality of weights of the next TX radar signal.

According to an embodiment of the present invention, it is possible to sequentially detect an important target through sequential block beamforming, thereby reducing a frame time and reducing a target Can be quickly found. In addition, even in the presence of multipath, the target and the false image enter the same range bin, so that it is possible to find two known Angle of Arrival (AOA) at once or use a complex adaptive beamforming The target can be accurately identified.

1 is a conceptual view of a conventional beamforming method in a round robin manner.
2 is a conceptual view of beam forming in the presence of a conventional multipath;
FIG. 3 is a conceptual diagram for extracting a plurality of scattering points from a target in order to distinguish a target from a conventional one.
4 is a block diagram of a radar transceiver according to an embodiment of the present invention;
5 is a block diagram of a radar transceiver according to another embodiment of the present invention.
FIGS. 6-8 illustrate results of forming a sequential block beam from an important target in accordance with an embodiment of the present invention. FIG.

Hereinafter, the operation principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

4 is a block diagram of a radar transceiver according to an embodiment of the present invention.

Hereinafter, a sequential block beam forming method for rapidly detecting an important target in a detection area in a radar transceiver 400 according to an embodiment of the present invention will be described in detail with reference to FIG.

An antenna array 406 may include a plurality of antennas 407. At this time, each of the antennas 407 provided in the antenna array 406 may be a directional antenna and may be arranged in a line spaced apart at regular intervals, but the present invention is not limited thereto.

The transmitter 402 generates a TX radar signal and transmits it to the detection area 420 through the antenna array 406. At this time, for example, the TX radar signal may be a pulse signal, and the detection region 420 may be an area set to detect the target A, the target B, the target C, and the like, And each target is assumed to be at a different distance from the antenna array 406, but is not so limited.

The TX radar signal transmitted from the transmitter 402 to the detection area 420 may be reflected by the target in the detection area 420 and may be received by the antenna array 406. [

The receiving unit 408 receives the RX radar signal through the antenna array 406, in which the TX radar signal is reflected on any target in the detection area 420 as described above.

Referring to FIG. 4, if the directional angle of the antenna 407 provided in the antenna array 406 is, the path difference between target antennas may be dsin, and the RX radar signal reflected from the nearest target A May be received first in the antenna array 406.

)를 설정하여 웨이트가 적용된 TX 레이더 신호가 안테나 어레이(406)를 통해 탐지 영역(420)내에서 빔포밍(beam forming)될 때 웨이트에 대응하는 방향으로 빔포밍되도록 한다. The weight control unit 404 receives a weight (weight) for determining the beam forming direction of the TX radar signal

) So that the weighted TX radar signal is beamformed in the direction corresponding to the weight when it is beamformed in the detection region 420 through the antenna array 406. [

That is, when the TX radar signal is transmitted in the detection area 420 for the first time, the weight control unit 404 sets the weight to a scalar (scala) so that the TX radar signal is transmitted to the entire detection area 420, The weight applied to the TX radar signal is changed based on the RX radar signal reflected by the arbitrary target in the detection region 420 so that the beam forming direction of the TX radar signal is formed in a specific direction in which the target is located do. At this time, the criterion for determining whether the beam forming direction of the TX radar signal is formed in a specific direction in which the target is located can be determined by recognizing that the beam forming of the TX radar signal toward the target is formed within a predetermined beam width , But is not limited thereto.

In addition, the weight control unit 404 may be operable to change the weight applied to the TX radar signal based on the RX radar signal, for example, by using a conjugate complex number (Rx) of the RX radar signal reflected from the target and received by the antenna array 406 complex conjugate can be set to the weight of the next TX radar signal. At this time, it is assumed that the RX radar signal is received in an antenna array in the form of a plane wave.

,

라고 가정하면, 다음 TX 레이더 신호에 적용되는 웨이트는 RX 레이더 신호의 공액 복소수인

,

등으로 설정될 수 있다. 이러한 웨이트 변경이 반복되는 경우 TX 레이더 신호의 빔포밍 방향이 탐지 영역(420)내 안테나 어레이(406)로부터 가장 가까이 위치하여 RX 레이더 신호를 반사한 표적 A의 방향으로 형성되어 표적 A가 탐지될 수 있다.That is, for example, if the RX radar signal is

,

, The weight applied to the next TX radar signal is the conjugate complex number of the RX radar signal

,

And the like. When such a weight change is repeated, the beam forming direction of the TX radar signal is located in the direction of the target A that is located closest to the antenna array 406 in the detection area 420 and reflects the RX radar signal, so that the target A can be detected have.

When the target A positioned closest to the antenna array 406 is detected as described above, the weight control unit 404 calculates a new weight such that the beam forming direction of the TX radar signal is in a direction other than the direction of the target A , The calculated weight is set to the weight of the next TX radar signal so that the next target B, C, etc. in the detection area 420 can be detected.

Accordingly, according to the weight setting in the weight control unit 404 as described above, sequential block beams can be formed in the target located in the detection region 420, and the target can be detected quickly.

Hereinafter, the operation of adjusting the weight so that the block beam is sequentially formed from an important target having the largest signal intensity in the detection region 420 in the weight control unit 404 will be described in detail.

In this case, when the antenna array 406 is a linear array antenna as shown in FIG. 4, and a plurality of targets in the detection region 420 are positioned at an angle of? With respect to the center of the array antenna, The array response vector (a ([theta]) for the target can be expressed as in Equation (1) below.

와 같이 표현될 수 있다.In Equation (1), the weight vector w is expressed by

Can be expressed as

At this time, the path difference from the target to the n-th antenna for the linear array antenna may be larger than the path difference of the (n + 1) th antenna by dsin. Therefore, when a pulse is transmitted from the array antenna, the signal received and reflected on the target A is proportional to the following equation (2).

Therefore, the received signal vector x in the array antenna 407 can be expressed as Equation (3) below.

In Equation (3), the transmission signal vector s is determined by the Radar Cross Section (RCS) value for the target A, the directivity for the array antenna, and the transmission power.

Therefore, in order to maximize the power of the received signal vector for target detection in the weight control unit 404, a weight vector used in beamforming is multiplied by a right singular vector v of matrix B in [Equation 3] It is set as a weight vector in beam formation. This weight vector w can be expressed as in Equation (4) below.

On the other hand, a case where only one target exists in the detection area 420 is considered above. Assuming that a total of k targets exist (assuming that the number of targets is smaller than the total number of antennas used in the antenna array), the received signal vector x may be expressed by Equation (5) .

이고, 행렬 A는 총 K개의 표적에 대한 배열 응답 벡터를 열별로 쌓아서 만든 행렬이 된다.In the above equation (5)

And the matrix A is a matrix formed by accumulating the array response vectors for a total of K targets column by column.

At this time, if the singular value decomposition is applied to the matrix B, it can be expressed by the following equation (6).

로 나타낼 수 있고, 위의 [수학식 6]으로부터

임을 알 수 있으므로, 이를 통해서 아래의 [수학식 7]과 같이 표현할 수 있다.From here

And from Equation (6) above,

It can be expressed as the following equation (7).

으로 설정해줌으써, 안테나 어레이(406)로부터 송신되는 빔이 방향을 가장 파워가 우세한 표적의 방향으로 설정해줄 수 있다.The weight vector is set as the right singular vector of the matrix B through beamforming through Equation (7) shown above, that is,

So that the beam transmitted from the antenna array 406 can set the direction to the direction of the target with the most power dominant.

는 아래의 [표 1]에서와 같은 반복적인 계산을 통해서 찾을 수 있다.That is, by summarizing the above equations, the most dominant right specific vector

Can be found through repetitive calculations as in [Table 1] below.

In the above [Table 1], the matrix B can be expressed by the following equation (8).

Therefore, the (*) portion in Table 1 can be expressed by the following Equation (9) by Equation (8).

In addition, the algorithm shown in [Table 1] can be re-expressed as shown in [Table 2]. This is known as the phase conjugation method.

In generalization, the k-th dominant right singular vector should be perpendicular to the remaining k-1 vectors, and at the same time, the following Equation (10) must be satisfied.

에 대한 직교 여공간(orthogonal complement)

는 아래의 [수학식 11]과 같이 나타낼 수 있고,

이용하면 [표 2]에서 나타낸 알고리듬 2를 [표 3]에서와 같이 확장할 수 있다.At this time, the properties of the projection matrix and the matrix

The orthogonal complement < RTI ID = 0.0 >

Can be expressed by the following equation (11)

Algorithm 2 shown in [Table 2] can be extended as shown in [Table 3].

In order to find the consecutive dominant right singular vectors by extending the algorithm shown in the above [Table 3], a projection matrix update lemma as shown in Equation (12) below is required.

As shown in FIG. 5, the algorithm described above can be extended to a block beam shape in which a plurality of targets are searched at a time. The advantage of such an extension is that the time required to detect a target can be further reduced by independently locating the location of a weak target before the location of the stronger signal is determined. In this case, it is necessary to apply different orthogonal codes to each layer to prevent inter-layer interference.

5 shows a configuration of a radar transceiver according to another embodiment of the present invention.

Hereinafter, a sequential block beam forming method for simultaneously detecting a plurality of targets in the detection area 520 in the radar transceiver 500 according to another embodiment of the present invention will be described in detail with reference to FIG.

5, a plurality of weight control units 504 are provided for each antenna, as compared with FIG. 4, so that a plurality of beam forming directions of a TX radar signal can be implemented, It is possible to simultaneously detect a plurality of targets such as target A, target B, and target C in the region 520. [

The antenna array 506 may comprise a plurality of antennas. In this case, each of the antennas 507 provided in the antenna array 506 may be a directional antenna and may be arranged in a line spaced apart at regular intervals, but the present invention is not limited thereto.

The transmitter 502 generates a TX radar signal and transmits it to the detection area through the antenna array 506. At this time, for example, the TX radar signal may be a pulse signal, and the detection region 520 may be an area set to detect the target, and a plurality of targets may be positioned as shown in FIG. 4, Are assumed to be located at different distances from the antenna array 506, but are not limited thereto.

The TX radar signal transmitted from the transmitter 502 to the detection area 520 may be reflected by the target in the detection area 520 and may be received by the antenna array 506. [

The receiving unit 508 receives the RX radar signal through the antenna array 506, in which the TX radar signal is reflected back from any target in the detection area 520 as described above.

)를 설정하여, 복수의 웨이트가 적용된 복수의 TX 레이더 신호가 안테나 어레이(506)를 통해 탐지 영역(520) 내에서 빔포밍될 때 각 웨이트에 대응하는 방향으로 빔포밍되도록 한다. The weight control unit 504 controls a plurality of weights (a plurality of weights) for determining a plurality of beam forming directions of the TX radar signal

So that a plurality of TX radar signals to which a plurality of weights are applied are beamformed in a direction corresponding to each weight when beamforming is performed in the detection area 520 through the antenna array 506. [

That is, when a plurality of TX radar signals are transmitted in the detection area 520 for the first time, the weight controller 504 sets the weight as a scalar value so that the TX radar signal is transmitted to the entire detection area in the form of a plane wave After that, the TX radar signal changes the weight applied to the TX radar signal based on the RX radar signal reflected back from any target in the detection area 520, so that the beam-forming direction of the TX radar signal is shifted in a specific direction .

At this time, in the operation of changing the weight applied to each TX radar signal based on the RX radar signal, the weight control unit 504 reflects the target from the target such as target A, target B, target C, The complex conjugate of the RX radar signal corresponding to each received TX radar signal may be changed to a plurality of weights of the next TX radar signal.

 When such a weight change is repeated, the beamforming direction of the TX radar signal is located closest to the antenna array 506 in the detection area 520 and is located in the direction of a plurality of targets A, B, C reflecting the RX radar signal Target A, target B, target C can be detected at one time.

When the target A, target B, and target C located closest to the antenna array 506 are detected as described above, the weight control unit 504 controls the beamforming direction of the TX radar signal based on the target A, target B, target C direction , And sets the calculated plurality of weights to the weight of the next TX radar signal so that the next target in the detection area 520 can be detected.

Thus, according to the weight setting in the weight control unit 504 as described above, sequential block beams can be formed for a plurality of targets located in the detection area 520, and the target can be quickly detected.

The weight controller 504 may be configured to apply different orthogonal codes to each TX radar signal so that interference between a plurality of weighted TX radar signals does not occur. However, the weight controller 504 is not limited thereto.

FIGS. 6 to 8 show the results of forming sequential block beams from an important target according to an embodiment of the present invention.

As the experimental conditions for the results of FIGS. 6 to 8, a uniformly arranged array antenna (uniform array antenna) was used at the same intervals, and the number of antennas considered in the experiment was assumed to be 128. In addition, a situation where three targets exist in total is considered, and the position (?) And power (s) of each target are set as shown in the following Equation (13).

In this environment, the result of the phase conjugate beamforming method which concentrates the beam in the direction of the target with high power by continuously finding the dominant right vector over the three targets and setting it as the weight vector in beam formation It looked.

Accordingly, it can be seen that the beams are formed in the direction of the target having the largest power value as shown in FIG. That is, since the first target is located in the -2 direction, it can be seen that the main lobe of the beam is directed in the corresponding direction.

Also, as shown in FIG. 7, beam formation is performed in the direction of the target having the second largest power value. That is, since the second target is located in the 6 ° direction, it can be seen that the main lobe of the beam is directed in the corresponding direction.

Also, as shown in FIG. 8, beam formation is performed in the direction of the target having the third largest power value. That is, since it is assumed that the third target is located in the direction of 5.5 degrees, it can be seen that the main lobe of the beam is directed in the corresponding direction.

As described above, according to an embodiment of the present invention, it is possible to sequentially detect an important target through sequential block beamforming, so that the round- You can quickly find important targets while reducing. In addition, even in the presence of multipath, the target and fake target enter the same range bin, so that the target can be accurately identified without having to find two known angles of arrival at once or using complex adaptive beamforming.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should not be limited by the described embodiments but should be defined by the appended claims.

402: Transmission unit 404: Weight control unit
406: Antenna array 408: Receiver

Claims (20)

An antenna array comprising a plurality of antennas,
A transmitter for transmitting a TX radar signal to the detection area through the antenna array;
A receiver for receiving the TX radar signal through the antenna array, the RX radar signal being reflected from the detection area,
A weight for determining a beam forming direction of the TX radar signal is set, a TX radar signal to which the weight is applied is applied to the antenna array, and when a beam forming direction of the TX radar signal is formed in a specific direction in the detection area And a weight control unit for changing the weight based on the RX radar signal up to
Radar transceiver. The method according to claim 1,
The weight control unit includes:
And sets the conjugate complex conjugate of the RX radar signal to the weight of the next TX radar signal
Radar transceiver. The method according to claim 1,
The weight control unit includes:
When the TX radar signal is first transmitted to the detection area, the weight is set to a scalar value so that the TX radar signal is transmitted to the entire detection area
Radar transceiver. The method of claim 3,
Wherein the RX radar signal comprises:
Wherein the TX radar signal is a signal received at the antenna array that is reflected by a target located closest to the antenna array in the detection area,
The weight control unit includes:
The conjugate complex value of the RX radar signal is repeatedly set to the weight of the next TX radar signal until the time when the beam forming direction of the TX radar signal is formed in the target direction
Radar transceiver. The method according to claim 1,
The weight control unit includes:
Calculating a new weight that causes the beam forming direction of the TX radar signal to be in a direction other than the specific direction when the beam forming direction of the TX radar signal is formed in the specific direction, Set the weight of the signal
Radar transceiver. An antenna array comprising a plurality of antennas,
A transmitter for transmitting a TX radar signal to the detection area through the antenna array;
A receiver for receiving the TX radar signal through the antenna array, the RX radar signal being reflected from the detection area,
A plurality of weights for determining a plurality of beamforming directions of the TX radar signal are set, a plurality of TX radar signals to which the plurality of weights are applied are applied to the antenna array, and a beam forming direction of each TX radar signal is And a weight control unit for changing the plurality of weights based on the RX radar signals corresponding to the respective TX radar signals until they are formed in a specific direction in the detection area
Radar transceiver. The method according to claim 6,
The weight control unit includes:
The plurality of weights are set so that the plurality of TX radar signals are signals that are orthogonal to each other
Radar transceiver. The method according to claim 6,
The weight control unit includes:
And sets the conjugate complex conjugate of the RX radar signal to the weight of the next TX radar signal
Radar transceiver. The method according to claim 6,
The weight control unit includes:
When each of the TX radar signals is first transmitted to the detection area, sets the plurality of weights to a scalar value and controls each TX radar signal to be transmitted to the entire detection area
Radar transceiver. 9. The method of claim 8,
Wherein the RX radar signal comprises:
Wherein each TX radar signal is a signal received at the antenna array reflected by a plurality of different targets located closest to the antenna array in the detection region,
The weight control unit includes:
The conjugate complex value of the RX radar signal corresponding to each TX radar signal is repeatedly set to the plurality of weights for the next TX radar signal until the time at which the beam forming direction of each TX radar signal is formed in the direction of each target doing
Radar transceiver. The method according to claim 6,
The weight control unit includes:
Wherein when a beam forming direction of each of the TX radar signals is formed in the specific direction, a new plurality of weights are calculated such that a beam forming direction of each TX radar signal is a direction other than the specific direction, To the plurality of weights of the next TX radar signal
Radar transceiver. Generating a TX radar signal to be transmitted to a detection area through an antenna array comprising a plurality of antennas;
Setting a weight for determining a beam forming direction of the TX radar signal when the TX radar signal is applied;
Applying the weight to the TX radar signal,
Transmitting a TX radar signal to which the weight is applied through the antenna array to the detection area;
Receiving an RX radar signal through the antenna array wherein the TX radar signal is reflected back from the detection area;
Changing the weight based on the RX radar signal until a beam forming direction of the TX radar signal is formed in a specific direction within the detection area
Method of transmitting and receiving radar. 13. The method of claim 12,
Wherein the modifying comprises:
Setting a complex conjugate of the RX radar signal to a weight of a next TX radar signal,
Method of transmitting and receiving radar. 14. The method of claim 13,
Wherein the RX radar signal comprises:
Wherein the TX radar signal is a signal received by the antenna array reflected by a target located closest to the antenna array in the detection region,
Wherein the modifying comprises:
Repeating the conjugate complex value of the RX radar signal by the weight of the next TX radar signal until the time when the beam forming direction of the TX radar signal is formed in the target direction
Method of transmitting and receiving radar. 13. The method of claim 12,
The method comprises:
Calculating a new weight such that a beam forming direction of the TX radar signal is in a direction other than the specific direction when a beam forming direction of the TX radar signal is formed in the specific direction;
And setting the calculated weight to the weight of the next TX radar signal
Method of transmitting and receiving radar. Generating a TX radar signal to be transmitted to a detection area through an antenna array comprising a plurality of antennas;
Setting a plurality of different weights that determine a plurality of beamforming directions of the TX radar signal when the TX radar signal is applied;
Applying the plurality of weights to the TX radar signal,
Transmitting a plurality of TX radar signals to which the plurality of weights are applied through the antenna array to the detection area;
Receiving, via the antenna array, an RX radar signal, wherein each TX radar signal is reflected back from the detection region;
Modifying the plurality of weights based on an RX radar signal corresponding to each TX radar signal until a beam forming direction of each TX radar signal is formed in a specific direction within the detection area
Method of transmitting and receiving radar. 17. The method of claim 16,
The plurality of weights include:
And is set to a value such that the plurality of TX radar signals are orthogonal to each other
Method of transmitting and receiving radar. 17. The method of claim 16,
Wherein the modifying comprises:
And sets the conjugate complex conjugate of the RX radar signal to the weight of the next TX radar signal
Method of transmitting and receiving radar. 19. The method of claim 18,
Wherein the RX radar signal comprises:
Wherein each TX radar signal is a signal received at the antenna array reflected by a plurality of different targets located closest to the antenna array in the detection region,
Wherein the modifying comprises:
The conjugate complex value of the RX radar signal corresponding to each TX radar signal is repeatedly set to the plurality of weights for the next TX radar signal until the time at which the beam forming direction of each TX radar signal is formed in the direction of each target Step
Method of transmitting and receiving radar. 13. The method of claim 12,
The method comprises:
Calculating a new plurality of weights such that a beam forming direction of each TX radar signal is in a direction other than the specific direction when a beam forming direction of each TX radar signal is formed in each of the specific directions;
And setting the calculated plurality of weights to the plurality of weights of the next TX radar signal
Method of transmitting and receiving radar.

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