JPH07183717A - Electron beam scanning antenna equipment - Google Patents

Abstract

PURPOSE:To reduce phase skip in a beam scanning antenna. CONSTITUTION:Signals of antenna planes 1 to 4 provided with element antennas 5 and variable phase shifters 6 are selected by a switch 8, and the selected signal is received by a reception part 10 for angle correction, and not only the switch 8 but also the variable phase shifters 6 are controlled by a beam control part 9 to direct the beam to a desired direction. Since the signal from the reception part 10 is processed in the lobe switch system by a tracking processing part 11 to detect the angular error and the direction of the beam is most suitably adjusted, phase skip is reduced, and an inexpensive and high- precision equipment is obtained with simple constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electron beam scanning antenna device, and more particularly to an improved beam control technique used for radar and satellite communication antennas.

[0002]

2. Description of the Related Art FIG. 5 shows, for example, a conventional type antenna structure in which an electron beam scanning antenna device whose entire area is covered by an azimuth direction is covered with four antenna surfaces and the surfaces are switched according to the azimuth direction. This is an example, and FIG. 5 (a) shows a state as viewed from above, and FIG. 5 (b) shows a state as viewed from the side so that faces 3 and 4 are in front. Also,
The block configuration of the entire apparatus is shown in FIG. In FIG. 5, 1 is an antenna surface 1 in which a large number of element antennas are arranged on a trapezoidal inclined surface, and 2 to 4 are antenna surfaces 2 in which a large number of element antennas are arranged on a trapezoidal inclined surface similarly to the antenna surface 1. ˜4, and 5 is an element antenna forming each of the antenna surfaces 1 to 4. In addition, in FIG.
Is a variable phase shifter for setting the phase amount for the element antenna 5, and 7 is a variable phase shifter 6 for transmitting signals to the element antenna 5.
A combiner / distributor that combines the outputs of the variable phase shifters 6 that phase-shift the received signal of the element antenna 5 with
Reference numeral 4 denotes an antenna surface composed of the element antenna 5, the variable phase shifter 6 and the combiner / distributor 7 described above, and an amplifier for amplifying a received radio wave is provided if necessary. Reference numeral 8 connects the transmission signal to any one of the antenna surfaces 1 to 4 according to the switching signal from the beam control portion 9 and switches the reception signal of each antenna surface 1 to 4 from the beam control portion. A switching device for selecting and outputting any one of them according to a signal, and 9 for generating a switching signal to the switching device 8 and setting the phase amount of the variable phase shifter 6 included in the antenna surfaces 1 to 4. It is a beam controller.

Next, the operation will be described. The beam control unit 9 determines the direction of the beam to be directed by the antenna. Regarding the azimuth angle direction, 0 to 360 ° is shared by the antenna surfaces 1 to 4, and in the case of 0 to 90 °, the surface 1
Then, in the case of 90 to 180 °, it is surface 2 and 180 to 270 °
In the case of, the surface is covered by the surface 3, and in the case of 270 to 360 °, the surface is covered by the surface 4. In addition, in order to simplify the description in the elevation angle direction, it is assumed that the coverage area can be covered by beam scanning with one surface on each surface.

Since the switching timing of the surfaces 1 to 4 is determined by the beam controller 9 when the pointing direction is determined, a desired surface is selected by controlling the switch 8. On the selected surface, the beam scanning sets the phase amount of each element antenna 5 by the variable phase shifter 6, and reaches each element antenna so that the wavefront is orthogonal to the radio wave from the target direction as shown in FIG. This is done by giving the phase difference of the distance difference.

As described above, by controlling the phase shifter for each antenna surface and selecting the four antenna surfaces, it is possible to cover each omnidirectional coverage area.

[0006]

Since the conventional electron beam scanning antenna device is constructed as described above, the structure shown in FIG.
As shown in the conceptual diagram of, for example, if the target directions on the surfaces 1 and 2 deviate from the directions equidistant from the surfaces 1 and 2 by Δθ, the combined phase center distance d of the two surfaces is A phase error Δφ occurs. In this case, Δφ = dsi
nΔθ.

Usually, the command value from the beam controller is calculated from the position information of the target, the position of this antenna device, the posture information of the moving body equipped with this antenna device, etc., so the command value and the target direction are different from each other. An angle error occurs due to various factors such as a sensor error. Therefore, phase switching occurs due to the above phase error during surface switching,
This becomes a problem especially in a coherent communication system that requires phase synchronization.

In this coherent communication system, as is well known, data is transmitted in synchronism with a clock and the receiving side demodulates the data using the clock extracted from the received signal. Therefore, the phase difference between the clock and the data is 180 °. In the above case, the data cannot be demodulated correctly. Therefore, in an antenna device of a transmission / reception system that uses the same method such as satellite communication, there is a problem that if the phase jump becomes steep and large, the line quality such as bit error rate deterioration and synchronization loss may occur. .

As one of the methods for solving such a problem, it is possible to prevent the deterioration of the bit error rate and the occurrence of loss of synchronization by reducing the composite phase center distance d. If the size of the antenna is reduced or the number of surface divisions is increased in order to reduce d, there is a problem in that the antenna gain on one surface is reduced and desired performance cannot be obtained.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to suppress the phase skip even when there is an angle error, and an electron beam scanning antenna device which does not cause performance deterioration. The purpose is to get.

[0011]

An electron beam scanning antenna apparatus according to the present invention has a plurality of element antennas and a plurality of variable phase shifters for changing the phase amount of each element antenna, and outputs an electron beam. A plurality of antenna units that can be dynamically moved, a switch for selecting the plurality of antenna units, a receiving unit for correcting an angle error that receives a signal from the antenna units selected by the switch, and a switch The beam control unit for controlling the variable phase shifter to direct the beam in a desired direction while controlling the antenna and the beam control unit for vibrating the beam in the vicinity of the desired direction. The signal from the antenna is received and demodulated by the receiving unit by processing the signal from the receiving unit and optimally adjusting the beam directivity direction. By using the bell signal, the tracking processing unit detects an angular error between the target direction and the beam directing direction, and optimally adjusts the beam directing direction, so that an element antenna including a plurality of element antennas as one unit is formed. It is designed to suppress phase skips when switching surfaces.

Further, the electron beam scanning antenna device according to the present invention is such that the receiving device using the present antenna device is used as the receiving portion for correcting the angle error.

Further, in the electron beam scanning antenna device according to the present invention, the tracking processing section is provided with a lobe switch signal generator for generating a lobe switch signal whose polarity alternates and an offset is added in synchronization with the lobe switch signal. And an error detector that detects the angular error of the beam using the output of the receiving unit corresponding to the beam,
The beam control unit is provided with a first adder for adding the lobe switch signal to the beam command angle and a second adder for adding the angle error to the output of the first adder. .

[0014]

The electron beam scanning antenna apparatus according to the present invention detects the angular error between the target direction and the beam directing direction using the reception level signal before switching the antenna surface, and sets the beam directing so as to set it to "0". Since the antenna surface is switched after the direction is adjusted, it works to reduce the phase jump due to this angular error.

Further, in the electron beam scanning antenna device according to the present invention, the receiving device for receiving and demodulating the original communication signal is also used as the receiving unit for correcting the beam angle error, so that the beam angle correction is performed. Therefore, it is not necessary to provide a dedicated receiving unit just for the purpose.

Further, the electron beam scanning antenna device according to the present invention adds an offset to the beam by the lobe switch signal which is constantly generated, and detects the angular error of the beam from the output of the receiving section corresponding to the beam to which the offset is added. Since this is corrected and the lobe switch signal is always generated, the correction is continuously performed, and the beam pointing direction command angle does not have to be highly accurate.

[0017]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an electron beam scanning antenna device according to an embodiment of the present invention. In the figure, the same symbols as those in FIG. 6 indicate the same components. Reference numeral 10 denotes a receiving unit that receives a high-frequency signal from any one of the antenna surfaces 1 to 4 selected by the switch 8 and outputs the reception level signal.
Is a tracking processing unit by the lobe switch method, which uses the reception level signal from the reception unit 10 to offset the beam at high speed to both polarities to detect an angular error.

FIG. 2 is a diagram showing an error detection principle for detecting an angle error by the lobe switch system, and FIG. 3 is a diagram showing patterns of a reference signal and an error signal detected by the system. Further, FIG. 4 is a block diagram showing a beam offset and angle error detection and angle error correction method by the lobe switch. In FIG. 4, reference numeral 9a denotes a lobe switch signal adder for adding a bipolar lobe switch signal to the beam pointing direction command angle to give a slight offset to the beam, and 9b denotes this lobe switch signal adder 9
An angle error corrector for correcting the angle error by adding the output of a and the output of the servo compensator 11b of the tracking processing unit 11,
Reference numeral 9c is a phase control amount calculator that calculates the phase control amount of the variable phase shifter 6 based on the output of the angle error corrector 9b and outputs this phase set value to the antenna surfaces 1 to 4. Also,
Reference numeral 11a denotes an error detector for detecting an angular error in the direction of the target from the beam center based on the reception level signal for the beam A and the reception signal for the beam B from the receiving unit 10, and 11b denotes the error detector from this error detector 11a. A servo compensator for performing servo compensation for stabilizing the control loop based on the angle error, 11c predicts the timing at which the antenna plane should be switched based on the gyro signal, and has both polarities before and after the plane switching timing. A lobe switch signal generator that generates a lobe switch signal.

Next, the operation will be described with reference to FIGS. First, the beam control unit 9 determines the direction of the beam to be directed by the antenna. In the azimuth direction, 0 to 360 ° is shared by the antenna surfaces 1 to 4, and in the case of 0 to 90 °, the surface is divided. 1, in the case of 90 to 180 °, the surface 2; in the case of 180 to 270 °, the surface 3;
In the case of 360 °, the surface 4 covers the respective coverage areas. As in the conventional example, the coverage area can be covered by beam scanning with one surface in each of the elevation angles.

Since the switching timing of the surfaces 1 to 4 is determined by the beam controller 9 when the pointing direction is determined, a desired surface is selected by controlling the switch 8. On the selected surface, the beam scanning sets the phase amount of each element antenna 5 by the variable phase shifter 6, and reaches each element antenna so that the wavefront is orthogonal to the radio wave from the target direction as shown in FIG. This is done by giving the phase difference of the distance difference. In this way, by controlling the phase shifter for each antenna surface and selecting four antenna surfaces, it is possible to cover each coverage area in all directions.

The above operation is similar to the conventional example, but in this embodiment, the newly added receiving section 10 and tracking processing section 1 are added.
1, the beam control unit 9 is controlled to perform error detection and angle error correction by the lobe switch method. By performing this error detection, phase skip occurring when switching the antenna surface is suppressed to a small level. .

In the error detection by the lobe switch method, as shown in FIG. 2, an angular offset having an offset width (Δθs) is alternately applied in both polarities with respect to the axial direction of the beam to be directed, and an offset position A and an offset position B are provided. Each of the received signal levels (VA and VB) at is detected in synchronization with the lobe switch signal, the difference between the signal levels is calculated as an error signal (Vε), and the average value of both signal levels is used as a reference signal (VR). calculate. The patterns of the reference signal and the error signal calculated in this way are shown in FIG.

Therefore, when the error signal (Vε) is normalized by the reference signal (VR), the target direction and the beam center are not affected by the relative fluctuation of the reception level as shown in the equations (1) to (6). It is possible to obtain a normalized error signal proportional to the deviation angle from the direction.

The lobe switch signal generator 11c shown in FIG. 4 receives a signal from a gyro (not shown) for detecting a turning motion of a moving body such as an aircraft equipped with the electron beam scanning antenna device, and the body turns to rotate the antenna surface. It is predicted whether or not it has reached the area requiring switching, and if it is determined that it is time to switch the antenna surface, a bipolar lobe switch signal is generated.

The error detector 11a synchronizes the lobe switch signal with the equation (1) for the received signal from the receiver 10.
~ (6) is obtained to obtain a normalized error signal, and an angle error determined from this normalized error signal is output and output to the servo compensator 11b. The servo compensator 11b performs compensation processing for stabilizing the angular error correction loop, and the angular error compensator 9b performs angular error correction by superimposing it on the beam pointing direction command angle.
In accordance with the beam designated direction command angle for which this angle error correction is performed, the antenna planes 1 to 4 are calculated by the phase control amount calculator 9c.
By setting the phase setting value of the variable phase shifter of, the angle error can be made zero.

As described above, if such a process is intermittently performed before switching the antenna plane, it is possible to prevent a decrease in bit error rate due to phase jump and loss of synchronization. The Gaussian approximation of the antenna pattern gives the normalized error signal and the normalized error sensitivity as

[0027]

[Equation 1]

[0028]

[Equation 2]

The reference signal (VR) and the error signal (Vε) are

[0030]

[Equation 3]

[0031]

[Equation 4]

The normalized error signal (VN) and the normalized error sensitivity (KS) are

[0033]

[Equation 5]

[0034]

[Equation 6]

From this, if Δθs and θBw are determined,
The normalized error sensitivity has a constant value. That is, a normalized error signal proportional to the angular error can be obtained in the minute angular error range.

As described above, according to the above-described embodiment, the timing at which the plane switching of the antenna is required is predicted, and at the timing at which the plane switching is predicted to be required, the beam is switched by the lobe switch method to reduce the angular error. By detecting and correcting the beam command angle based on this angle error, the phase setting value of the variable phase shifter that constitutes the antenna surface is changed, so even if there is an angle error, there is a phase jump. A reduction in bit error rate and loss of synchronization can be prevented, and an electron beam scanning antenna device that does not cause performance deterioration can be obtained.

Example 2. In the above embodiment, in order to obtain the reception level signal from the reception signal from the antenna surface, an example in which a dedicated receiving unit is provided as a case of receiving a beacon signal from the target has been shown,
The receiving unit may use a receiving unit that receives and demodulates a communication signal. In this case, the AGC signal of the receiving unit may be output to the tracking processing unit as a reception level signal.

As a result, by using the communication signal receiver originally equipped in the electron beam scanning antenna device and inputting the reception level signal to the tracking processor, the first embodiment
Similarly to this, the tracking processing unit can perform arithmetic processing so as to correct the beam pointing angle error, the phase skip can be reduced without providing a dedicated receiving circuit for beam correction, and the device can be made simple and inexpensive. Can be configured.

Example 3. Further, in the above embodiment, an example in which the angle error correction by the lobe switch method is intermittently performed before switching the antenna surface to reduce the phase jump is shown. However, the angle error correction by the lobe switch method is always continuous. You can go.

FIG. 8 is a block diagram showing the configuration of this embodiment. In this embodiment, a lobe switch signal generator 11d that constantly generates a lobe switch signal is provided in place of the lobe switch signal generator 11c that intermittently generates the lobe switch signal shown in FIG.

Next, the operation will be described with reference to FIGS. 1 to 3 and 8. First, the beam control unit 9 determines the direction of the beam to be directed by the antenna. In the azimuth direction, 0 to 360 ° is shared by the antenna surfaces 1 to 4, and in the case of 0 to 90 °, the surface is divided. 1 to 90 to 180
If it is °, it is surface 2, if it is 180-270 °, it is surface 3,
In the case of 270 to 360 °, the surface 4 covers the covering area. As in the conventional example, the coverage area can be covered by beam scanning with one surface in each of the elevation angles.

Since the switching timing of the surfaces 1 to 4 is determined by the beam controller 9 when the pointing direction is determined, the switch 8 is controlled to select the desired surface. On the selected surface, the beam scanning sets the phase amount of each element antenna 5 by the variable phase shifter 6, and reaches each element antenna so that the wavefront is orthogonal to the radio wave from the target direction as shown in FIG. This is done by giving the phase difference of the distance difference. In this way, by controlling the phase shifter for each antenna surface and selecting four antenna surfaces, it is possible to cover each coverage area in all directions.

The above operation is similar to the conventional example, but in the present embodiment, the newly added receiving unit 10 and tracking processing unit 1 are used.
1, the beam control unit 9 is controlled to perform error detection and angle error correction by the lobe switch method. By performing this error detection, phase skip occurring when switching the antenna surface is suppressed to a small level. .

The lobe switch signal generator 11d in FIG. 8 constantly generates a bipolar lobe switch signal, and the error detector 11a synchronizes with the lobe switch signal and the receiving section 1
The normalized error signal is obtained by calculating the equations (1) to (6) for the received signal from 0, and the angle error determined from this normalized error signal is output and output to the servo compensator 11b. The servo compensator 11b performs compensation processing for stabilizing the angular error correction loop, and the angular error compensator 9b performs angular error correction by superimposing it on the beam pointing direction command angle. The angle error is made zero by determining the phase set value of the variable phase shifter of the antenna surfaces 1 to 4 by the phase control amount calculator 9c according to the beam designated direction command angle for which the angle error correction is performed. You can

In the error detection by the lobe switch method, as shown in FIG. 2, an angular offset having an offset width (Δθs) is alternately applied in both polarities with respect to the axial direction of the beam to be directed, and an offset position A and an offset position B are provided. Each of the received signal levels (VA and VB) at is detected in synchronization with the lobe switch signal, the difference between the signal levels is calculated as an error signal (Vε), and the average value of both signal levels is used as a reference signal (VR). calculate. The patterns of the reference signal and the error signal calculated in this way are shown in FIG.

Therefore, when the error signal (Vε) is normalized by the reference signal (VR), the target direction and the beam center are not affected by the relative fluctuation of the reception level as shown in the equations (1) to (6). It is possible to obtain a normalized error signal proportional to the deviation angle from the direction.

The lobe switch signal generator 11d shown in FIG. 8 generates a lobe switch signal having both polarities. Error detector 1
1a synchronizes with the lobe switch signal to synchronize with the receiver 10
The normalized error signal is obtained by calculating the equations (1) to (6) for the received signal from, and the angle error determined from this normalized error signal is output and output to the servo compensator 11b.
The servo compensator 11b performs compensation processing for stabilizing the angular error correction loop, and the angular error compensator 9b performs angular error correction by superimposing it on the beam pointing direction command angle. The angle error is made zero by determining the phase set value of the variable phase shifter of the antenna surfaces 1 to 4 by the phase control amount calculator 9c according to the beam designated direction command angle for which the angle error correction is performed. You can The Gaussian approximation of the antenna pattern gives the normalized error signal and the normalized error sensitivity as

[0048]

[Equation 7]

[0049]

[Equation 8]

The reference signal (VR) and the error signal (Vε) are

[0051]

[Equation 9]

[0052]

[Equation 10]

The normalized error signal (VN) and the normalized error sensitivity (KS) are

[0054]

[Equation 11]

[0055]

[Equation 12]

From this, if Δθs and θBw are determined,
The normalized error sensitivity has a constant value. That is, a normalized error signal proportional to the angular error can be obtained in the minute angular error range.

As described above, according to the above-described embodiment, the angle error is detected by constantly switching the beam by the lobe switch method, not only at the timing when the plane of the antenna needs to be switched, but based on this angle error. Since the phase set value of the variable phase shifter forming the antenna surface is changed by correcting the beam command angle, the bit due to the phase jump is generated even when an angle error exists, as in the first embodiment. It is possible to prevent a decrease in error rate and loss of synchronization, and to obtain an electron beam scanning antenna device that does not cause performance deterioration.

Further, in this embodiment, since the lobe switch signal generator always generates the lobe switch signal, it is predicted or determined whether or not the switching timing of the antenna surface is reached as in the first embodiment. The logic is not required and the circuit of the lobe switch signal generator can be downsized.

Moreover, in the third embodiment, since the correction is continuously applied, the tracking accuracy of directing the beam toward the target depends on the tracking accuracy of the lobe switch system, and the position information of the target and the antenna device of the present invention are used. It is not necessary to increase the accuracy of the beam pointing direction command angle calculated by calculation from the position and orientation information, etc. as in the conventional device, and the accuracy of the sensor for obtaining such information can be greatly reduced, and the device can be simplified. The effect is obtained.

Example 4. Also in the configuration of the third embodiment, as in the second embodiment, instead of providing a dedicated receiving unit for beam correction, a reception unit for receiving a communication signal originally installed in the antenna device is received. It is also possible to use the reception level signal of the device, without increasing the device size of the receiving system or the circuit size of the lobe switch signal generator or obtaining a highly accurate beam pointing direction command angle. The effect is that beam correction can be performed when switching the antenna surface.

[0061]

As described above, according to the present invention, each has a plurality of element antennas and a plurality of variable phase shifters for changing the phase amount of each element antenna, and the beam is electronically movable. A plurality of antenna units, a switch for selecting the plurality of antenna units, an angle correction receiving unit for receiving a signal from the antenna units selected by the switch, and an antenna by controlling the switches. A beam control unit that selects a part and controls the variable phase shifter to direct the beam in a desired direction, and the beam control unit that vibrates the beam in the vicinity of the desired direction, By providing a tracking processing unit that processes the signal and optimally adjusts the directivity of the beam, the receiving unit receives and demodulates the signal from the antenna and uses the received level signal to perform the tracking processing unit. Since the angle error between the target direction and the beam pointing direction is detected and the beam pointing direction is adjusted optimally, there is no phase jump when switching the element antenna plane with one element block consisting of multiple element antennas as one unit. There is an effect that an electron beam scanning antenna device that can be suppressed to a small size and that does not cause performance deterioration when switching the antenna surface is obtained.

Further, according to the present invention, since the receiving device using the present antenna device is used as the receiving part for the angle correction, the receiving device for the communication signal originally equipped in the electron beam scanning antenna device is used. The device can also be used as a receiving unit for beam correction, and there is an effect that a dedicated receiving unit only for beam correction can be omitted and the device can be configured easily and inexpensively.

Further, according to the present invention, the tracking processing section is provided with
An angle error of the beam is detected by using a lobe switch signal generator that generates a lobe switch signal whose polarity alternates and an output of a receiving unit that corresponds to a beam to which an offset is added in synchronization with the lobe switch signal. An error detector is provided, and the beam control unit includes a first adder for adding the lobe switch signal to the beam command angle and a second adder for adding the angle error to the output of the first adder. Is provided, an offset is added to the beam by the lobe switch signal, the angular error of the beam is detected from the output of the receiving unit corresponding to the beam to which the offset is added, and this is corrected, and the lobe switch signal is Since it is always generated, the beam is continuously corrected, and the beam pointing direction command angle does not have to be highly accurate.
This has the effect of simplifying the configuration of a sensor or the like for obtaining the pointing command angle.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electron beam scanning antenna device according to a first embodiment of the present invention.

FIG. 2 is a principle diagram of an angle error detection of a lobe switch system according to the first embodiment of the present invention.

FIG. 3 is a pattern diagram of reference signals and error signals of the lobe switch system according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a beam offset and angular error detection / correction unit of the electron beam scanning antenna device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing an antenna unit of a conventional electron beam scanning antenna device.

FIG. 6 is a block diagram showing a conventional electron beam scanning antenna device.

FIG. 7 is a diagram showing a phase error of a conventional electron beam scanning antenna.

FIG. 8 is a block diagram showing a beam offset and angular error detection / correction unit of the electron beam scanning antenna device according to the second embodiment of the present invention.

[Explanation of symbols]

 1 Antenna Surface 1 2 Antenna Surface 2 3 Antenna Surface 3 4 Antenna Surface 4 5 Element Antenna 6 Variable Phase Shifter 7 Combiner / Distributor 8 Switcher 9 Beam Controller 9a Lobe Switch Signal Adder 9b Angle Error Corrector 10 Receiver 11 Tracking processing unit 11a Error detector 11d Lobe switch signal generator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masatoshi Kanno 50 Matsuhidai, Matsudo City, Chiba Prefecture 3-39, Defense Agency Dormitory 3-506 (72) Inventor Fumio Ito 8-1-1 Tsukaguchihonmachi, Amagasaki City, Hyogo Sanryo Electric Co., Ltd. Inside the telecommunication factory

Claims (3)

[Claims] 1. A plurality of antenna units each having a plurality of element antennas and a plurality of variable phase shifters for changing the phase amount of each element antenna, and capable of electronically moving a beam; Switch for selecting the antenna section, a receiving section for correcting an angle error for receiving a signal from the antenna section selected by the switch, and controlling the switch to select the antenna section and performing the variable transfer. A beam controller for controlling the phaser to direct the beam in a desired direction, and a beam controller for oscillating the beam in the vicinity of the desired direction and processing the signal from the receiver at that time to process the beam An electron beam scanning antenna device, comprising: a tracking processing unit that optimally adjusts the pointing direction. 2. The electron beam scanning antenna apparatus according to claim 1, wherein a receiving apparatus using the present antenna apparatus is used as the angle correction receiving section. 3. The electron beam scanning antenna device according to claim 1, wherein the tracking processing unit is synchronized with the lobe switch signal generator that generates a lobe switch signal whose polarity alternates. An error detector that detects the angular error of the beam using the output of the receiving unit corresponding to the beam to which the offset is added, and the beam control unit adds the lobe switch signal to the beam command angle. First
Second adder for adding the angle error to the output of the first adder
And an adder for the electron beam scanning antenna device.