A target object detection device is provided. The device includes a transmitter for transmitting at least one transmission wave in a predetermined azimuth, an echo signal receiver for receiving echo signals of the transmission waves, an echo signal suppressor for suppressing levels of the echo signa
A target object detection device is provided. The device includes a transmitter for transmitting at least one transmission wave in a predetermined azimuth, an echo signal receiver for receiving echo signals of the transmission waves, an echo signal suppressor for suppressing levels of the echo signals corresponding to sampling positions, a target object detector for detecting the target object(s) based on the level-suppressed echo signals, a first updater for comparing amplitude level(s) of echo signals of sampling positions, with the threshold that is set in association with the first distance, and determining to update the values with a new threshold and a new suppression value, and a second updater for comparing amplitude level(s) of echo signals of sampling positions, with the threshold that is set in association with the second distance, and determining to update the values with a new threshold and a new suppression value.
대표청구항▼
1. A target object detection device, comprising: a transmitter for transmitting at least one transmission wave in a predetermined azimuth from a transmission source thereof at a predetermined cycle;an echo signal receiver for receiving echo signals of the transmission waves from one or more target o
1. A target object detection device, comprising: a transmitter for transmitting at least one transmission wave in a predetermined azimuth from a transmission source thereof at a predetermined cycle;an echo signal receiver for receiving echo signals of the transmission waves from one or more target objects at the cycle;an echo signal suppressor for suppressing levels of the echo signals corresponding to sampling positions every time the echo signals are received at the cycle, by using setting of amplitude level suppression values of the echo signals based on thresholds for the sampling positions that are set in association with distances from the transmission source;a target object detector for detecting the one or more target objects based on the level-suppressed echo signals;a first updater for comparing one or more amplitude levels of echo signals of sampling positions within a first area corresponding to a first distance from the transmission source, with the threshold that is set in association with the first distance, and determining to update the values with a new threshold and a new suppression value for each sampling position corresponding to the first distance based on the comparison result; anda second updater for comparing one or more amplitude levels of echo signals of sampling positions corresponding to a second distance that is farther than the first distance from the transmission source, with the threshold that is set in association with the second distance, and determining to update the values with a new threshold and a new suppression value for each sampling position located farther than the first distance based on the comparison result and a relation with the threshold for each sampling position located farther than the first area. 2. The target object detection device of claim 1, wherein the first updater compares amplitude levels of echo signals of a plurality of sampling positions within the first area including the one or more sampling positions at the first distance, with the thresholds for the plurality of sampling positions, respectively, and determines the new threshold and suppression value for each sampling position at the first distance, and wherein the second updater compares amplitude levels of echo signals of a plurality of sampling positions within a second area including the one or more sampling positions corresponding to the second distance, with the thresholds for the plurality of sampling positions, respectively, and determines the new threshold and suppression value for each sampling position located farther than the first distance. 3. The target object detection device of claim 2, wherein the transmission source transmits the transmission waves at a transmission cycle shorter than the predetermined cycle while changing the transmission azimuth, the transmission azimuth including the predetermined azimuth, wherein the plurality of sampling positions within the first area include a plurality of sampling positions at the first distance, andwherein the plurality of sampling positions within the second area include a plurality of sampling positions at the second distance. 4. The target object detection device of claim 2, wherein in the threshold determination by the first updater, each of the amplitude levels of the echo signals of the plurality of sampling positions within the first area is compared with the threshold for the corresponding sampling position, the number of sampling positions exceeding the threshold is counted to obtain a first counted number, and the threshold and suppression value for each sampling position at the first distance are updated based on the first counted number, and wherein in the threshold determination by the second updater, each of the amplitude levels of the echo signals of the plurality of sampling positions within the second area is compared with the threshold for the corresponding sampling position, the number of sampling positions exceeding the threshold is counted to obtain a second counted number, and the threshold and suppression value for each sampling position at the second distance are updated based on the second counted number. 5. The target object detection device of claim 4, wherein the first updater sets the threshold and suppression value for each sampling position at the first distance to be larger as the first counted number is larger, and wherein the second updater sets the threshold and suppression value for each sampling position within the second area to approach an amplitude level of an echo signal corresponding thereto. 6. The target object detection device of claim 1, wherein the second updater includes a primary IIR filter for determining a gain based on the comparison result, passing each echo signal of the sampling position within the second area therethrough, and setting the threshold and suppression value for the sampling position. 7. The target object detection device of claim 4, further comprising a third updater for comparing one or more amplitude levels of echo signals of sampling positions corresponding to a third distance that is farther than the second distance from the transmission source, with the threshold that is set in association with the third distance, and determining to update the values with a new threshold and a new suppression value for each sampling position within a third area located farther than the second distance based on the comparison result and a relation with the threshold for each sampling position located farther than the second distance. 8. The target object detection device of claim 7, wherein the third updater includes a primary IIR filter for determining a gain based on the comparison results obtained by the second and third updaters, passing each echo signal of the sampling position located farther than the first distance therethrough, and setting the threshold and suppression value for the sampling position. 9. The target object detection device of claim 1, wherein the suppression of the echo signal is performed using the threshold for each sampling position as the suppression value for the sampling position. 10. The target object detection device of claim 1, further comprising: an antenna for transmitting pulse waves while rotating at the predetermined cycle as the transmission source; anda display unit for displaying the one or more target objects detected based on the echo signals obtained from the suppression. 11. A method of processing an echo signal, comprising: transmitting a transmission wave in a predetermined azimuth from a transmission source at a predetermined cycle, wherein the transmission source is an antenna for transmitting pulse waves while rotating at the predetermined cycle;receiving echo signals of the transmission waves from one or more target objects at the cycle via the antenna;suppressing levels of the echo signals corresponding to sampling positions every time the echo signals are received, by using setting of amplitude level suppression values of the echo signals, based on thresholds for the sampling positions that are set in association with distances from the transmission source;wherein the setting of amplitude suppression values includes: comparing one or more amplitude levels of echo signals of sampling positions within a first area corresponding to a first distance from the transmission source, with the threshold that is set in association with the first distance, and determining to update the values with a new threshold and a new suppression value for each sampling position corresponding to the first distance based on the comparison result; andcomparing one or more amplitude levels of echo signals of sampling positions corresponding to a second distance that is farther than the first distance from the transmission source, with the threshold that is set in association with the second distance, and determining to update the values with a new threshold and a new suppression value for each sampling position located farther than the first distance based on the comparison result and a relation with the threshold for each sampling position located farther than the first area, and using the new threshold and the new suppression value for each sampling position with a target object detector to generate detection image data and/or a determination result;displaying the detection image data and/or determination result on a display. 12. The method of claim 11, wherein the determination of the new threshold and suppression value for each sampling position corresponding to the first distance includes comparing amplitude levels of echo signals of a plurality of sampling positions within the first area including the one or more sampling positions at the first distance, with the thresholds for the plurality of sampling positions, respectively, and determining the new threshold and suppression value for each sampling position at the first distance, and wherein the determination of the new threshold and suppression value for each sampling position located farther than the first distance includes comparing amplitude levels of echo signals of a plurality of sampling positions within a second area including the one or more sampling positions corresponding to the second distance, with the thresholds for the plurality of sampling positions, respectively, and determining the new threshold and suppression value for each sampling position located farther than the first distance. 13. The method of claim 12, wherein the transmission source transmits the transmission waves at a transmission cycle shorter than the predetermined cycle while changing the transmission azimuth, the transmission azimuth including the predetermined azimuth, wherein the plurality of sampling positions within the first area include a plurality of sampling positions at the first distance, andwherein the plurality of sampling positions within the second area include a plurality of sampling positions at the second distance. 14. The method of claim 12, wherein the determination of the new threshold and suppression value for each sampling position corresponding to the first distance includes comparing each of the amplitude levels of the echo signals of the plurality of sampling positions within the first area with the threshold for the corresponding sampling position, counting the number of sampling positions exceeding the threshold to obtain a first counted number, and updating the threshold and suppression value for each sampling position at the first distance based on the first counted number, and wherein the determination of the new threshold and suppression value for each sampling position located farther than the first distance includes comparing each of the amplitude levels of the echo signals of the plurality of sampling positions within the second area with the threshold for the corresponding sampling position, counting the number of sampling positions exceeding the threshold to obtain a second counted number, and updating the threshold and suppression value for each sampling position at the second distance based on the second counted number. 15. The method of claim 14, wherein the determination of the new threshold and suppression value for each sampling position corresponding to the first distance includes setting the threshold and suppression value for each sampling position at the first distance to be larger as the first counted number is larger, and wherein the determination of the new threshold and suppression value for each sampling position located farther than the first distance includes setting the threshold and suppression value for each sampling position in the second area to approach an amplitude level of an echo signal corresponding thereto. 16. The method of claim 11, wherein the determination of the new threshold and suppression value for each sampling position located farther than the first distance includes setting a gain of a primary IIR filter based on the comparison result, passing each echo signal of the sampling position located farther than the first distance through the primary IIR filter, and determining the threshold and suppression value for the sampling position. 17. The method of claim 11, further comprising comparing one or more amplitude levels of echo signals of sampling positions corresponding to a third distance that is farther than the second distance from the transmission source, with the threshold that is set in association with the third distance, and determining to update the values with a new threshold and a new suppression value for each sampling position within a third area located farther than the second distance based on the comparison result and a relation with the threshold for each sampling position located farther than the second distance. 18. The method of claim 17, further comprising: setting a gain of a primary IIR filter based on the comparison results obtained by the determination of the new threshold and suppression value for each sampling position corresponding to the first distance and the determination of the new threshold and suppression value for each sampling position located farther than the first distance; andpassing each echo signal of the sampling position located farther than the first distance through the primary IIR filter, and determining the threshold and suppression value for the sampling position. 19. The method of claim 11, wherein in the suppression processing of the echo signal, the threshold for each sampling position is used as the suppression value for the sampling position, and the level of the echo signal is subtracted by the threshold. 20. The method of claim 11, wherein the transmission source is an antenna for transmitting pulse waves while rotating at the predetermined cycle. 21. A target object detection device, comprising: a transmitter for transmitting at least one transmission wave in a predetermined azimuth from a transmission source thereof at a predetermined cycle;an echo signal receiver for receiving echo signals of the transmission waves from one or more target objects at the cycle;an echo signal suppressor for suppressing levels of the echo signals corresponding to sampling positions every time the echo signals are received at the cycle, by using setting of amplitude level suppression values of the echo signals based on thresholds for the sampling positions that are set in association with distances from the transmission source;a target object detector for detecting the one or more target objects based on the level-suppressed echo signals;an updater for comparing one or more amplitude levels of echo signals of sampling positions within an area corresponding to a distance from the transmission source, with the threshold that is set in association with the distance, and determining to update the values with a new threshold and a new suppression value for each sampling position corresponding to the distance based on the comparison result.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (17)
DeCesare Peter A., Adaptive constant false alarm rate circuit with extremely low loss.
Reynolds ; III Albert H. (St. Louis MO) Boettger Rand E. (Florissant MO) Pauly Steven W. (St. Petersburg FL), Method and apparatus for controlling the false alarm rate of a receiver.
Lee, Jae Eun; Lim, Hae Seung; Jeong, Seong Hee, Method and device for sensing surrounding environment based on frequency modulated continuous wave radar.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.