ONE-BIT DIRECT-POSITION-DETERMINATION BASED ON TIME-VARYING QUANTIZATION THRESHOLDS

被引：0
|
作者：
Ni, Lihua [1 ]
Zhang, Di [1 ]
Wang, Yongqiang [1 ]
Liu, Ning [2 ]
Wan, Qun [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Peoples R China
[2] Northern Inst Elect Equipment, Beijing 100191, Peoples R China
来源：
IGARSS 2023 - 2023 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2023年
关键词：
Direct Position Determination; time-varying quantization; one-bit; CRLB; distributed radar;
D O I：
10.1109/IGARSS52108.2023.10282346
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The traditional one-bit direct position determination (DPD) based on zero-thresholding quantization (ZQ) scheme suffers from remarkable performance degradation. To solve this problem, this paper proposes a Rao-test-based method for the one-bit signal based on time-varying quantization (TQ) scheme (TQ-one-bit Rao test, TQ-OBRT) to detect and locate the target simultaneously. We derive the one-bit Cramer-Rao Lower bound (CRLB) based on TQ scheme. Then, we obtain the optimal quantization (OQ) scheme by the minimizing the one-bit CRLB, and introduce a random quantization (RQ) scheme without iterative processing. Simulation results show that the performance of the proposed OQ and RQ schemes is superior to that of the conventional ZQ scheme.
引用
收藏
页码：6553 / 6556
页数：4
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