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VARIABLE LENGTH RANGING AND DIRECTION-FINDING SIGNALS CONSTRUCTED FROM BANDLIMITED KERNELS AND SPARSE SPREADING SEQUENCES
VARIABLE LENGTH RANGING AND DIRECTION-FINDING SIGNALS CONSTRUCTED FROM BANDLIMITED KERNELS AND SPARSE SPREADING SEQUENCES
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机译:由带限内核和稀疏扩展序列构成的可变长度测距和定向信号
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摘要
To generate a pulse for ranging, a kernel is convolved with a spreading sequence. The spreading sequence is parametrized by one or more ordered (length, sparsity) pairs, such, that the first sparsity differs from the bit length of the kernel and/or a subsequent sparsity differs from the product of the immediately preceding length and the immediately preceding sparsity. Alternatively, a kernel is convolved with an ordered plurality of spreading sequences, all but the first of which may be non-binary. The pulse is launched towards a target. The reflection from the target is transformed to a received reflection, compressed by deconvolution of the spreading sequence, and post-processed to provide a range to the target and/or a direction of arrival from the target.
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