From 1bb879efd71c6ffbb40cedce6fea1f292b074b84 Mon Sep 17 00:00:00 2001
From: Josh Gao <josh_gao@foxmail.com>
Date: Thu, 2 Jul 2026 15:07:26 +0800
Subject: [PATCH] =?UTF-8?q?fix(sec3):=20=E8=A1=A5=E8=A7=82=E6=B5=8B?=
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sec3 首用处直接 vec(Y_l) 却未定义 Y_l(仅符号索引 A 有条目),违
"符号首现即在本节定义"约定。补:Y_l=[y_l(0),…,y_l(T-1)]∈
C^{M_l×T}(列为各采样点接收向量,衔接同节 y_l(t)),再 vec。
---
 parts/sec3_multiSatSingleUser.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/parts/sec3_multiSatSingleUser.tex b/parts/sec3_multiSatSingleUser.tex
index 697f999..5419e7c 100644
--- a/parts/sec3_multiSatSingleUser.tex
+++ b/parts/sec3_multiSatSingleUser.tex
@@ -176,7 +176,7 @@
   \in\mathbb C^{M_\ell T\times 1}.
 \end{equation}
 %
-将第 $\ell$ 颗卫星的观测堆叠并向量化为 $\tilde{\mathbf y}_\ell\triangleq\vect(\mathbf Y_\ell)$，则有
+将第 $\ell$ 颗卫星在该观测块内 $T$ 个采样点的接收向量按列堆叠为观测矩阵 $\mathbf Y_\ell\triangleq[\mathbf y_\ell(0),\ldots,\mathbf y_\ell(T-1)]\in\mathbb C^{M_\ell\times T}$，再按列向量化为 $\tilde{\mathbf y}_\ell\triangleq\vect(\mathbf Y_\ell)\in\mathbb C^{M_\ell T}$，则有
 %
 \begin{equation}
   \tilde{\mathbf y}_\ell