| 摘要 |
Some embodiments are directed to methods of detecting a target that include: receiving signals reflected from a target of interest, the signals having a bandwidth large enough to provide a plurality of range cells along an expected target, and processing the received signal(s) by (i) determining the phases of contiguous groups of range cells, the group size selected to approximate to sizes of targets of interest, (ii) phase-shifting the returns within a group to increase constructive interference and thereby signal power; and (iii) combining the phase shifted returns to produce phase-adjusted combined returns, and performing a detection on those combined returns. Some embodiments may provide enhanced target detection capabilities. The process may be repeated for different potential target sizes, and may be performed either on real time data, or off-line on recorded data, and is applicable to both radar and sonar. |
| 主权项 |
1. A method of detecting a target, comprising:
a) receiving signals reflected from a target of interest, the signals having a bandwidth large enough to provide a range resolution smaller than a largest dimension of a target of interest, and generating from those signals a set of high range resolution (HRR) returns each being associated with a particular range; b) processing the received signal(s) by:
i) grouping HRR returns contiguously by range, each group covering a total range spread of approximately similar dimension to a target type of interest;ii) processing the HRR returns within a group to determine their phases;iii)phase-shifting the returns within a group to increase constructive interference and thereby signal power; andiv)combining the phase shifted returns to produce phase-adjusted combined returns, and performing a detection on those combined returns. |
